Relevant bibliographies by topics / Grips strength

Academic literature on the topic 'Grips strength'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Grips strength"

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Stevenson, Peter E., Todd R. Skochdopole, L. Cassady, Dennis Pihs, and Ajit D. Kelkar. "Testing of High Strength Fabrics: Reporting Modulus, Low Strain Properties, and Ultimate Tensile Strength." Journal of Industrial Textiles 29, no. 4 (April 2000): 259–72. http://dx.doi.org/10.1177/152808370002900403.

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Measurement of the tensile properties of high strength woven and knit fabrics, including geotextiles and geogrids traditionally make use of roller grip-type clamping systems. These grips are designed to allow a sample to be pulled in tension without applying an excessive crimping or compressive force on the specimen, thus avoiding premature failure. Roller grips, also known as capstan grips, also have the advantage of allowing the specimen to align itself with the applied force therefore loading the specimen uniformly across the width. However, since the specimen tightens itself around the grip during testing, crosshead travel cannot be used to measure specimen strain, which makes the determination of low strain properties and the selection of modulus values difficult. Two issues that must be addressed in obtaining low strain properties are how to measure sample strain and how to get an accurate and repeatable starting point for the test. This paper will explore alternate methods of gripping systems, strain measurement and data analysis with the objective of accurately measuring and reporting low strain properties of woven and knit textiles.
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JOSTY, I. C., M. P. H. TYLER, P. C. SHEWELL, and A. H. N. ROBERTS. "Grip and Pinch Strength Variations in Different Types of Workers." Journal of Hand Surgery 22, no. 2 (April 1997): 266–69. http://dx.doi.org/10.1016/s0266-7681(97)80079-4.

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We measured grip and pinch strengths in non-manual, light manual and heavy manual workers using a Jamar dynamometer and a pinch measuring device. Heavy manual workers had the strongest grips with the least difference between sides. Office workers had the weakest grips and the greatest difference between sides. Light manual workers were between these two groups. Consequently, the occupation of the patient must be taken into account when using grip and pinch strength measurements to assess the need for rehabilitation and in medicolegal reports.
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Zhao, Xin Yi, Shi Bao Li, and Xu Gong. "The Influence of Specimen Grips on the Measurement of Micro-Tensile Bond Strength to Human Dentin." Key Engineering Materials 492 (September 2011): 18–23. http://dx.doi.org/10.4028/www.scientific.net/kem.492.18.

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To evaluate the effects of specimen grips on the measurement of the micro-tensile bond strength (mTBS) to dentin. Methods: Twelve extracted human molars were sectioned to expose mid-coronal dentin. Each surface was ground with 600-grit SiC paper. Four adhesives: Prime & Bond NT (Dentsply, USA), Contex (DMG, German), Adper Prompt (3M/ESPE, USA) and Clearfil S3Bond (Kuraray, Japan) were applied to the polished surfaces followed by creation of composite buildups. After 24 hr storage in 37°C water, the teeth were sectioned perpendicular to the adhesive interface to produce multiple beams of composite-bonded dentin, approximately 0.8 mm2in cross-sectioned area. Half of the specimens were attached to testing grips A which did not contain positioning pins and another half were attached to the testing grips B which contained positioning pins. All specimens were tested using a universal testing machine at a crosshead speed of 1.0 mm/min. Results: Specimens tested using the grips A presented lower mTBS than using the grips B (P<0.01). Many specimens tested using the grips A showed mix failure or cohesive failure within composite, and most of the failures were adhesive for specimens tested using the grips A. Conclusion: Specimen grips without positioning pins cannot accurately present mTBS and the grips with positioning pins can more accurately present mTBS.
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Montazer, M. Ali, and John G. Thomas. "Grip Strength as a Function of 200 Repetitive Trials." Perceptual and Motor Skills 75, no. 3_suppl (December 1992): 1320–22. http://dx.doi.org/10.2466/pms.1992.75.3f.1320.

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A study was done to see how grip strength deteriorates after an extended number of grips. Eight male subjects, all right-handed and 23 to 35 years old, participated. Each subject made 200 grips on a dynamometer at his maximum strength. There were 15-sec. rests between trials. Performance dropped significantly after two trials. There were drops of about 40% and 50% at Trials 100 and 200, respectively. The grip strength/trial relationship is logarithmic as noted by Montazer and Thomas in 1991.
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Holland, Sara, James Dickey, Louis Ferreira, and Emily Lalone. "Investigating the grip forces exerted by individuals with and without hand arthritis while swinging a golf club with the use of a new wearable sensor technology." Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology 234, no. 3 (June 16, 2020): 205–16. http://dx.doi.org/10.1177/1754337120923838.

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Hand arthritis is the leading cause of disability in individuals over the age of 50, causing impairments in grip strength and range of motion. Golf is often recommended to patients with hand arthritis as a low-impact sport to maintain a healthy lifestyle. As such, numerous “arthritic” golf grips have been marketed, but lack quantitative measures to justify their use. The objective of this study was to quantify the differences in total applied grip force in golfers with/without hand arthritis using several types of golf grips. Twenty-seven participants (17 without and 10 with hand arthritis) were evaluated swinging mid-iron clubs with 12 different golf grip designs (9 standard and 3 “arthritic”). The trail hand thumb, index, middle, and ring finger applied grip forces were measured using the wireless FingerTPS system. Finger grip configuration (finger joint angles) of the thumb and index were measured using the Dartfish Movement Analysis Software paired with the newly developed Grip Configuration Model to obtain grip range of motion. Results indicated that golfers with hand arthritis had a significant deficit of 45% golf grip strength (P = 0.02). In addition, individuals with hand arthritis exhibited larger forces in 11 out of 12 golf grips tested when compared with their maximum golf grip strength. Despite how these grips are marketed, there are no “savings” in finger force or grip configuration when using the “arthritic” designed golf grips. Therefore, these grips may not be beneficial for patients with hand arthritis.
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Gilbertson, Louise, and Sarah Barber-Lomax. "Power and Pinch Grip Strength Recorded Using the Hand-Held Jamar® Dynamometer and B+L Hydraulic Pinch Gauge: British Normative Data for Adults." British Journal of Occupational Therapy 57, no. 12 (December 1994): 483–88. http://dx.doi.org/10.1177/030802269405701209.

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The purpose of this study was to establish British normative data for adults aged 15 to 92 years, using four different hand grips. A Jamar® dynamometer was used to measure power grip and a B+L hydraulic pinch gauge to measure tip, tripod and lateral grips. A sample of 130 men and 130 women from the Cambridgeshire area was tested, using standardised positioning and instructions. The results showed that male grip strength was stronger than female grip strength in all hand grips. In both men and women, power grip peaked between the ages of 15 and 49 years and declined gradually after the age of 50 years. Tip, tripod and lateral pinch grips did not decline noticeably until after the age of 70 years in women and, although there was a gradual decline in male tripod and lateral pinch grips after 65 years, male tip pinch grip showed no noticeable decline related to age. Normative data collected in this study were lower than norms reported in American studies.
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Mlakar, Maja, Nerrolyn Ramstrand, Helena Burger, and Gaj Vidmar. "Effect of custom-made and prefabricated orthoses on grip strength in persons with carpal tunnel syndrome." Prosthetics and Orthotics International 38, no. 3 (June 24, 2013): 193–98. http://dx.doi.org/10.1177/0309364613490440.

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Background: Based on the literature, patients with carpal tunnel syndrome are suggested to wear a custom-made wrist orthosis immobilizing the wrist in a neutral position. Many prefabricated orthoses are available on the market, but the majority of those do not assure neutral wrist position. Objectives: We hypothesized that the use of orthosis affects grip strength in persons with carpal tunnel syndrome in a way that supports preference for custom-made orthoses with neutral wrist position over prefabricated orthoses. Study design: Experimental. Methods: Comparisons of grip strength for three types of grips (cylindrical, lateral, and pinch) were made across orthosis types (custom-made, prefabricated with wrist in 20° of flexion, and none) on the affected side immediately after fitting, as well as between affected side without orthosis and nonaffected side. Results: Orthosis type did not significantly affect grip strength ( p = 0.661). Cylindrical grip was by far the strongest, followed by lateral and pinch grips ( p < 0.050). The grips of the affected side were weaker than those of the nonaffected side ( p = 0.002). Conclusions: In persons with carpal tunnel syndrome, neither prefabricated orthoses with 20° wrist extension nor custom-made wrist orthoses with neutral wrist position influenced grip strength of the affected hand. Compared to the nonaffected side, the grips of the affected side were weaker. Clinical relevance The findings from this study can be used to guide application of orthoses to patients with carpal tunnel syndrome.
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Polilov, A. N., D. D. Vlasov, and N. A. Tatus’. "Developing of the optimal shape and reinforcement structure of the specimen for adequate determination of the tensile strength in unidirectional composites." Industrial laboratory. Diagnostics of materials 87, no. 2 (February 16, 2021): 43–55. http://dx.doi.org/10.26896/1028-6861-2021-87-2-43-55.

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Unidirectional composites exhibit the highest strength when stretched along the fibers. However, the proper determination of the strength faces great methodological difficulties. The main problems of tensile testing of polymer composites consisted in developing of the specimen shape and the method of specimen fixation which ensure the minimum impact of the stress concentration near the grips on the strength measurements. A conventional shape of the specimen with fillets is unsuitable for unidirectional polymers due to the splitting occurred in the fillet zones upon loading. Therefore, the specimens are usually standardized in the form of rectangular strips fixed using pads or special grips which provide constant transverse forces. However, with such a specimen shape, a significant stress concentration inevitably occurs at the edge of grips and the lower the ratio of the interlayer shear modulus to the longitudinal Young’s modulus, the greater the stress concentration impact. For the purpose of the most correct determination of the strength we propose to use specimens with smoothly varying dimensions at the same cross-sectional area which ensures keeping the total number of unbroken fibers in each section. The specimen thickness decreases when moving from the working part of the specimen to the gripping part, whereas the width (while maintaining the section area) grows to prevent the specimen collapsing resulting from transverse forces in standard self-tightening grips. Analytical and FEM modeling is performed to select a rational contour shape. Technological equipment has been developed and a procedure of manufacturing testing specimens has been worked out. The tensile test of specially manufactured curvilinear reinforced specimens showed higher strength values compared to standard rectangular strips or specimens with semicircular fillets.
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Thomas, J., L. Martin, and G. Muir. "Getting to grips with grip strength: A scoping review of patients mapped against sarcopenia consensus cut points." Physiotherapy 113 (December 2021): e61. http://dx.doi.org/10.1016/j.physio.2021.10.022.

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Olszowy, Kathryn M., Michael A. Little, Gwang Lee, Alysa Pomer, Kelsey N. Dancause, Cheng Sun, Harold Silverman, et al. "Coming to grips with economic development: Variation in adult hand grip strength during health transition in Vanuatu." American Journal of Physical Anthropology 167, no. 4 (September 27, 2018): 760–76. http://dx.doi.org/10.1002/ajpa.23704.

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Dissertations / Theses on the topic "Grips strength"

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Paulo, Danilo Pazian [UNESP]. "Desenvolvimento de um dinamômetro biomédico ergonômico com comunicação com dispositivos móveis." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151081.

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Dinamômetros biomédicos são equipamentos utilizados para medir forças exercidas pelas mãos. Com o uso deste tipo de equipamento, é possível realizar avaliações biomecânicas das mãos de pacientes que após cirurgias, acidentes ou patologias osteomioarticulares, tiveram redução na sua capacidade de exercer forças com as mãos. O objetivo deste trabalho foi a implementação de um dinamômetro biomédico ergonômico, de fácil utilização, com capacidade de comunicação com diferentes tipos de dispositivos móveis, como smartphones e tablets. O projeto realizado se constitui no aprimoramento de duas versões anteriores de dinamômetros implementadas no Laboratório de Instrumentação Eletrônica e Engenharia Biomédica da UNESP –Campus de Ilha Solteira. Testes em voluntários utilizando o dinamômetro desenvolvido e um dinamômetro comercial da marca SAEHAN, e posterior análise estatística dos dados revelam uma excelente confiabilidade intra-examinador para o dinamômetro desenvolvido, com coeficiente de correlação intraclasse médio de 0,95 entre os diferentes grupos analisados, e de 0,98 para o dinamômetro SAEHAN. A análise estatística revela também uma excelente confiabilidade concorrente para as medidas realizadas pelo dinamômetro desenvolvido em relação às do dinamômetro SAEHAN, sendo de 0,93 para mãos dominantes e 0,92 para mãos não dominantes. Assim, o dinamômetro desenvolvido é confiável, válido e comparável com o dinamômetro SAEHAN quando adotados os mesmos procedimentos de exame de preensão palmar.
Biomedical dynamometers are equipment used to measure forces exerted by the hands. Using this type of equipment, it is possible to perform biomechanical evaluations of the hands of patients that after surgery, accidents or diseases have had a reduction in the ability to exert force with their hands. The objective of this work was the implementation of an ergonomic biomedical dynamometer, easy to use, with ability to communicate with different types of mobile devices such as smartphones and tablets. The project carried out constitutes the improvement of two previous dynamometers versions implemented in the Electronic Instrumentation and Biomedical Engineering Laboratory at UNESP - Ilha Solteira. Volunteer tests using the developed dynamometer and a commercial SAEHAN dynamometer, and subsequent statistical analysis of the data revealed an excellent intra-examiner reliability for the developed dynamometer, a mean of 0,95 among different groups analyzed, and a mean of 0,98 for the SAEHAN dynamometer. The statistical analysis also revealed an excellent concurrent reliability for the measurements performed by the dynamometer developed in relation to those of the SAEHAN dynamometer, being 0,93 for dominant hands and 0,92 for non-dominant hands. Thus, the developed dynamometer is reliable, valid and comparable with the SAEHAN dynamometer when the same grip strength examination procedures were adopted.
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Paulo, Danilo Pazian. "Desenvolvimento de um dinamômetro biomédico ergonômico com comunicação com dispositivos móveis /." Ilha Solteira, 2017. http://hdl.handle.net/11449/151081.

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Orientador: Aparecido Augusto de Carvalho
Resumo: Dinamômetros biomédicos são equipamentos utilizados para medir forças exercidas pelas mãos. Com o uso deste tipo de equipamento, é possível realizar avaliações biomecânicas das mãos de pacientes que após cirurgias, acidentes ou patologias osteomioarticulares, tiveram redução na sua capacidade de exercer forças com as mãos. O objetivo deste trabalho foi a implementação de um dinamômetro biomédico ergonômico, de fácil utilização, com capacidade de comunicação com diferentes tipos de dispositivos móveis, como smartphones e tablets. O projeto realizado se constitui no aprimoramento de duas versões anteriores de dinamômetros implementadas no Laboratório de Instrumentação Eletrônica e Engenharia Biomédica da UNESP –Campus de Ilha Solteira. Testes em voluntários utilizando o dinamômetro desenvolvido e um dinamômetro comercial da marca SAEHAN, e posterior análise estatística dos dados revelam uma excelente confiabilidade intra-examinador para o dinamômetro desenvolvido, com coeficiente de correlação intraclasse médio de 0,95 entre os diferentes grupos analisados, e de 0,98 para o dinamômetro SAEHAN. A análise estatística revela também uma excelente confiabilidade concorrente para as medidas realizadas pelo dinamômetro desenvolvido em relação às do dinamômetro SAEHAN, sendo de 0,93 para mãos dominantes e 0,92 para mãos não dominantes. Assim, o dinamômetro desenvolvido é confiável, válido e comparável com o dinamômetro SAEHAN quando adotados os mesmos procedimentos de exame de preensão... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Biomedical dynamometers are equipment used to measure forces exerted by the hands. Using this type of equipment, it is possible to perform biomechanical evaluations of the hands of patients that after surgery, accidents or diseases have had a reduction in the ability to exert force with their hands. The objective of this work was the implementation of an ergonomic biomedical dynamometer, easy to use, with ability to communicate with different types of mobile devices such as smartphones and tablets. The project carried out constitutes the improvement of two previous dynamometers versions implemented in the Electronic Instrumentation and Biomedical Engineering Laboratory at UNESP - Ilha Solteira. Volunteer tests using the developed dynamometer and a commercial SAEHAN dynamometer, and subsequent statistical analysis of the data revealed an excellent intra-examiner reliability for the developed dynamometer, a mean of 0,95 among different groups analyzed, and a mean of 0,98 for the SAEHAN dynamometer. The statistical analysis also revealed an excellent concurrent reliability for the measurements performed by the dynamometer developed in relation to those of the SAEHAN dynamometer, being 0,93 for dominant hands and 0,92 for non-dominant hands. Thus, the developed dynamometer is reliable, valid and comparable with the SAEHAN dynamometer when the same grip strength examination procedures were adopted.
Mestre
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Hainbuch, Friedrich. "Grip strength training prevents falling /." Aachen : Shaker, 2008. http://d-nb.info/988058014/04.

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Zhang, Jing. "The correlation among three hand srength [sic] measurement methods : hand dynamometer." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020143.

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The purpose of this study was to determine the correlation among three hand strength measurement methods: Hand dynamometer, MDD (Middle Digital Extension Isokinetic Dynamometer), and Cybex. Five students (2 males, 3 females) from Ball State University were asked to participate in this study. Both right and left lower arm data were collected from these subjects. A Cybex 340 (Lumax Cor.) was employed to determine wrist flexion and extension isokinetic peak torque, total work, and power at 30 degrees/second and 60 degrees/second. A MDD was used to determine third digit eccentric torque, work, and power. A hand dynamometer (Lafayette Instrument Co., Model 76618) was used to determine grip force. Pearson product moment correlation coefficients were used to determine correlation among these variables. Significant correlations were noted between isometric grip strength and isokinetic 30 and 60 degrees/second wrist flexion power, as well as between isometric grip strength and isokinetic 30 degrees/second wrist extensor power. The results of this study indicate there is very little relationship between the three clinically used measurement tools.
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Clerke, Anita. "FACTORS INFLUENCING GRIP STRENGTH TESTING IN TEENAGERS." University of Sydney, 2006. http://hdl.handle.net/2123/3553.

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Doctor of Philosophy
The aims of the Thesis were: to investigate and quantify the factors influencing the production of maximum isometric grip strength force in a sample of Australian teenagers when using JamarTM-like handgrip dynamometers; to determine the reliability of this measure over long and short retest intervals; to establish a database of anthropometric and strength values for this group and prediction equations for premorbid strengths to aid assessment of recovery in those with upper limb pathologies. The history of these handgrip dynamometers demonstrates that they have been employed in one form or another for over three hundred years and are still widely used today in hand rehabilitation and medical examinations. Many new types of dynamometers have been constructed subsequent to the ubiquitous JamarTM and have all been briefly reviewed here. Handedness (dominance) was thought to be a possible factor influencing grip strength performance and was later evaluated. But first, the Edinburgh Handedness Inventory was tested with 658 teenagers and 64 adults and confirmed to be a valid tool for assessing handedness. Its validity was improved by substituting the tasks of sweeping and opening the lid of a box for hammering and use of a screwdriver. Its excellent reliability (ICC = .78, p < 0.01) was confirmed with 45 teenagers and 45 adults. There were 235 teenagers who performed maximal isometric grip strength tests and from the results a local database was created. It was confirmed that the grip strength difference in males and females becomes significant after the age of 13 years, and that the average teenaged male is stronger than the average teenaged female by 11.2 Kg force (p < .01). Height, weight, BMI, hand dimensions, past upper limb injuries, degrees of handedness and exercise levels were measured and compared with known norms to establish that the grip strength tested sample of teenagers was representative of urban teenagers in Australia. The influence of handedness on maximal grip strength in dominant and non-dominant hands was unable to be completely ascertained due to the vast majority of the sample of teenagers being right-handed. Only 13 of the 235 teenagers used their left hand for most tasks, with another 20 using their left hands for a small majority of tasks. There was a grip strength bias towards the dominant hand of 2.63 kg force (p < .01). The most accurate way to predict the grip strength of one hand is by knowing the grip strength of the other hand. Prediction models found that 90% (R2 adj .902) and 70% (R2adj .702) of the variance in one hand could be accounted for by the grip strength of their other hand for male and female teenagers, respectively. Prediction equations were also created to assist in estimating the pre-morbid grip strength of teenagers suffering from bilateral hand injuries. If for the males, measurements for height and hand surface area were entered into these models, the grip strength of the dominant and non-dominant hands could be estimated with 62.6 and 63.5% of the variance between the real and predicted scores accounted for, respectively. For the females the prediction models using height and hand surface area could only account for 33.9 and 42.8% of the variances, with no other independent variables improving the prediction equations. The reliability of the maximal grip strength performance of 154 of these teenagers was retested after one or four weeks. A number of sub-group permutations were created for age, gender, retest time interval and handedness groups. The measures of grip strength for males were highly reliable with ICC (3,1) values ranging from .91 to .97. These measures were significantly higher than that obtained from the females, where reliability values ranged from .69 to .83. Handedness played a significant part in grip strength reliability. The dominant hand of right-handed teenagers achieved an ICC (3,1) of .97, as contrasted with the non-dominant hand of left-handers who attained a very poor ICC (3,1) of .27. The shape of the hands of the males did not influence their grip strength or their reliability values, which ranged from .954 to .973. The shape of female hands did not affect their ability to generate maximal grip strength, only its reliability. The females with hands shaped squarer-than-average had mean grip strength reliability values of ICC (3,1) at only .48, in contrast to those with longer-than-average hands who achieved a mean ICC (3,1) of .92. The handle shape of the dynamometer may disadvantage square-handed females, and this should be further investigated.
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Hainbuch, Friedrich [Verfasser]. "Grip strength training prevents falling / Friedrich Hainbuch." Aachen : Shaker, 2008. http://d-nb.info/1161313400/34.

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Freitas, Paulo Barbosa de. "Force coordination in object manipulation effects of load force direction and grasping technique /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 185 p, 2009. http://proquest.umi.com/pqdweb?did=1833642551&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Lau, Wai-shing Vincent. "Comparison of power grip and lateral pinch strengths between the dominant and non-dominant hands for normal Chinese male subjects of different occupational demand." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23339718.

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Li, Ke. "Measurement and analysis of grip strength using advanced methods." Troyes, 2009. http://www.theses.fr/2009TROY0038.

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La force de préhension palmaire est un indicateur précieux qui peut être utilisé pour décrire non seulement la fonction de la main mais également le statut global du membre supérieur voire du corps entier. Sa mesure reste plusieurs aspects à améliorer ou explorer. Cette thèse est une contribution au développement de nouvelles méthodes de mesure et d’analyse de la force de préhension palmaire. Après une analyse bibliographique approfondie, un nouveau dispositif adapté au milieu écologique est présenté. Cet outil, la Grip-Ball, consiste en un capteur de pression et un système de communication sans fil, dans une balle étanche et souple, ce qui permet de mesurer et transmettre la pression interne à la balle lors de son écrasement. Une deuxième étude s’attache à comparer un autre dispositif innovant, le Myogrip, adapté aux très faibles forces de préhension avec les deux dispositifs les plus utilisés (Jamar et Martin Vigorimètre). En outre, les effets de la position du coude et la taille de la poignée ont été testés pour ces trois dynamomètres. Le développement d’un modèle de prédiction basé uniquement sur la circonférence de la main fait l’objet d’une troisième étude, ce qui donne un modèle simple facilement utilisable en routine. Les trois derniers chapitres sont consacrés à la présentation de méthodes avancées de traitement du signal lors de contractions soutenues dans le temps: transformée de Hilbert-Huang, analyse fractale, analyse par récurrence. Ces méthodes ont montré leur aptitude à caractériser les effets de la fatigue, du tremblement, de la maladie ou de l’âge au cours de ces contractions
Grip strength is a valuable indicator that can be used to describe not only hand function, but also the overall functional status of the upper-limb strength or even of the entire body. A number of improvements could be made. The aim of this thesis is to contribute to the development of new methods of measurement and analysis of grip-strength. After an in-depth literature review of the most relevant aspects of grip-strength testing, an intelligent dynamometer for home-based testing, the Grip-Ball, is presented. This dynamometer consists of a pressure sensor and a wireless communication system, which are inserted in-side a supple, air-tight ball, in order to measure the pressure inside the ball when it is squeezed. In addition to the Grip-Ball, another innovative dynamometer, the Myogrip, which is well-suited to the measurement of very weak grip strength, was compared to two of the most widely-used dynamometers (Jamar and Martin Vigorimeter). Furthermore the investigation was performed to evaluate the effects of elbow position and of the handle sizes when using these three dynamometers. The development of simple predictive model for the maximal grip strength based solely on hand circumference is presented in a third study, with this simple model suitable for routine use. The last three chapters are devoted to the presentation of advanced methods of signal processing obtained from sustained grip-strength contractions: Hilbert-Huang transform, fractal analysis, and recurrence analysis. These methods are able to characterise the effects of fatigue, tremor, disease or age during these sustained contractions
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Chen, Xuewei Sue. "The effect of elbow position and grip span on isometric grip strength and force distribution of fingers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31408.pdf.

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Books on the topic "Grips strength"

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Pirie, Webster David, ed. Developing grip strength. Denby Dale, Huddersfield, England: Springfield Books, 1986.

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Rajulu, Sudhakar L. A comparison of hand grasp breakaway strengths and bare-handed grip strengths of the astronauts, SML III test subjects, and the subjects from the general population. Houston, Tex: Lyndon B. Johnson Space Center, 1993.

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Bao, Stephen. Grip strength and hand force estimation. Olympia, WA: Dept. of Labor and Industries, SHARP Safety & Health Assesment & Research for Prevention, 2000.

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Bao, Stephen. Grip strength and hand force estimation. Olympia, WA: Dept. of Labor and Industries, SHARP Safety & Health Assesment & Research for Prevention, 2000.

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Selin, Ann-Sofie. Pencil grip: A descriptive model and four empirical studies. Abo: Abo Akad. Förlag, 2003.

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Anscombe, Susan M. An evaluation of functional outcome and grip strength following hand splinting for tenodesis grip in tetraplegic patients. [Guildford]: [University of Surrey], 1997.

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Stokes, Julie. You Will Be Okay: Find Strength, Stay Hopeful and Get to Grips with Grief. Hachette Children's Group, 2021.

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Brookfield, John. The Grip Master's Manual. Ironmind Enterprises, 2002.

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Nadoroznick, Riley. Ultimate Obstacle Racing Grip Strength: 23 Obstacle Course Racing Workouts for Improving Grip Strength So You Can Dominate Every Obstacle. Independently Published, 2021.

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Grip strength profiles of elementary aged males and females. 1992.

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Book chapters on the topic "Grips strength"

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Sharma, Lalit Kumar, Manoj Kumar Sain, and M. L. Meena. "Analyzing the Hand Grip Strength of Carpenters." In Ergonomics for Design and Innovation, 881–88. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94277-9_75.

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Malkis, Alexander, and Laurent Mauborgne. "On the Strength of Owicki-Gries for Resources." In Programming Languages and Systems, 172–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25318-8_15.

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Mégard, Christine, Sylvain Bouchigny, Samuel Pouplin, Céline Bonnyaud, Lucie Bertholier, Rafik Goulamhoussen, Pierre Foulon, Nicolas Roche, and Frédéric Barbot. "Including Grip Strength Activities into Tabletop Training Environments." In Lecture Notes in Computer Science, 261–71. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22061-6_19.

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Sai Krishna, M. N. S. S. Ch, B. A. Monesh Karthikkeyan, Binoy B. Nair, and Thiruvengadathan Rajagopalan. "Sensor-Based Grip Strength Monitoring System for Stroke Rehabilitation." In Lecture Notes in Electrical Engineering, 789–802. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9019-1_68.

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Torres, Pedro A., Daowen Zhang, and Huixia Judy Wang. "Constructing Conditional Reference Charts for Grip Strength Measured with Error." In Springer Proceedings in Mathematics & Statistics, 299–310. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7846-1_24.

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Tsekoura, M., G. Drousiotis, M. Avgeri, E. Billis, M. Katsoulaki, A. Kastrinis, X. Konstantoudaki, E. Tsepis, A. Bibi, and T. Bita. "Hand Grip Strength in Patients on Hemodialysis: An Observational Study." In GeNeDis 2020, 59–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78771-4_7.

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Ahmad, Israr, Mohd Mukhtar Alam, Nadeemul Haque, Abid Ali Khan, and Mohd Farooq. "Relationship Between Grip Strength and Anthropometric Variations—A Systematic Review." In Design Science and Innovation, 409–15. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9054-2_46.

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Chao, Shu-Min, Yi-Chen Chiu, and Ei-Wen Lo. "The Prediction Models of the Maximum Power Grip Strength and Pinch Strength in Taiwan Manufacturing Workers." In Advances in Intelligent Systems and Computing, 473–79. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20145-6_46.

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Chkeir, A., R. Jaber, D. J. Hewson, J. Y. Hogrel, and J. Duchêne. "Effect of Different Visual Feedback Conditions on Maximal Grip-Strength Assessment." In IFMBE Proceedings, 1127–31. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-00846-2_279.

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de la Vega-Bustillos, Enrique, Francisco Lopez-Millan, Gerardo Mesa-Partida, and Oscar Arellano-Tanori. "Grip and Pinch Strength of the Population of the Northwest of Mexico." In Advances in Intelligent Systems and Computing, 507–19. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96065-4_55.

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Conference papers on the topic "Grips strength"

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Vargas, Pedro, Ben Crowder, and David Roberts. "Zap-Lok® Connection Testing and Axial Strength Design." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50209.

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Zap-Lok® is a pipe joining technology which relies on radial-interference elastic strain and surface friction to join pipes. The connection consists of a “bell” (expanded end) into which a “pin” (the straight end of the adjoining pipe) is forcefully inserted to provide an interference fit (See Figure 1). Joining is accomplished via a specialized hydraulic joining press provided by Zap-Lok® which grips both pipe sections and forces them together. A thin layer of the patented epoxy is applied internally to the bell end, and externally to the pin end, to provide lubrication for the insertion. The joining operation takes approximately ten seconds. Both the bell and the pin are formed to specified tolerances per specification by Zap-Lok® technicians, and may be done in the field or shop. Typical applications include gathering and distribution systems, transmission lines and specialized pipe installations on land and offshore. Of particular interest is the ability to withstand corrosive products with the application of an internal coating that does not sustain damage during the joining operation. To qualify this technology for use extensive testing and analyses was performed. We found that: • In sour service applications the plastic deformation of the bell necessitated a heat treatment to insure that the connection remained NACE compliant. • The axial strength capacity was found to be somewhat less than that of a welded joint. • Burst capacity of the joint was robust. • The joint did not leak even after several cycles of significant plasticity. • Fatigue performance of the joint rivaled that of a lower-end girth weld (i.e. F2 S-N curve). A design method was developed to correctly account for the axial strength using basic ASME-type design concepts. In this presentation we summarize the connection mechanics, testing results, analytical models and design method for the Zap-Lok® connection.
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Lo, Jeffery, Dennis Lau, S. W. Ricky Lee, Simon Chan, Frank Chan, and K. C. Chau. "A New Method for the Solder Ball Pull Test Using a Shape Memory Alloy Tube." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62321.

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The solder ball shear test is a commonly used method to evaluate the attachment strength of solder balls. However, some previous studies indicated that the solder ball shear test may not be suitable for showing the effect of intermetallic compound (IMC) growth due to thermal aging. This is because the IMC layer is thin and not susceptible to the shear loading. Since the IMC layer consists of brittle materials, the ball pull test should be a better method to evaluate the solder ball attachment strength. The major challenge of conducting a solder ball pull test is how to grip the solder ball. This paper presents an innovative method for conducting the solder ball pull test. A shape memory alloy (SMA) tube is used to grip the solder ball and pull it off from the substrate. The inner diameter of the SMA tube is originally smaller than the diameter of the solder ball under testing. Once the temperature is raised to higher than the switching temperature of SMA, the SMA tube will expand radially, resulting an inner diameter larger than the solder ball. After the SMA tube cools down, the tube contracts and grips the solder ball firmly. The solder ball can then be pulled off from the attached substrate by frictional force. A prototype of the aforementioned solder ball pull test device has been developed. Some preliminary testing results are presented in this paper.
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Lee, G. L. "High Pressure Hot Fluid Oil Field Fiberglass Pipelines." In 1996 1st International Pipeline Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/ipc1996-1876.

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This paper describes the successful innovation in materials selection, testing, design, construction and operation of Fiberglass Reinforced Plastic (FRP) pipelines to handle the highly corrosive hot oil field production gathering fluids ( 80 C, 6.9 MPa) and high pressure produced water (70 C, 17.2 MPa). Materials selection includes technical comparison of all available options and life cycle economics. Materials qualification includes long term hydrostatic strength test at 93 C. Design meets API 15HR and CSA Z662. The pressure sealabilty of the threaded connection is ensured with an innovative make up procedure that measures make up position and a belt tong that grips FRP without damaging it Construction practices include protection of FRP during back fill. Evaluation of operational performance includes shut-in / start up, cool down / warm up and additional pressure tests.
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Montiel, Edgar J., and Kai-Tak Wan. "Mechanical Characterization of a Freestanding Polyvinyl Alcohol Hydrogel Membrane." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67446.

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The following study presents two methods established for characterizing the mechanical properties of polyvinyl alcohol hydrogel membranes. The first one, an instant deformation test with an automated machine allowed the determination of the elastic properties of the material, while the second permitted the determination of the viscoelastic properties with the use of the standard linear solid model while confirming the previously found elastic results. This is not trivial as clearly old fashioned tests such as the ASTM standard tension test where grips are used to hold the sample are not feasible to perform due to the fragile characteristics of this kind material that resemble delicate biological tissues. The results obtained are consistent with previous publications, where different methods where used, but an increase in the material strength was also found as the number of freezing/thawing cycles increased.
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Sharpe, William N., Kevin Turner, and Richard L. Edwards. "Electrostatic Mechanical Testing of Polysilicon." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-1273.

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Abstract Polysilicon, which is vapor deposited, is by nature only a few microns thick. In typical MEMS applications, the structural features may also be only a few microns wide. Establishing the elastic and strength properties using specimens that are similar in size is quite a challenge. This paper describes a tensile test system that grips a large ‘paddle’ on the end of a tensile specimen with electrostatic force; this enables the testing of polysilicon specimens that have cross-sections as small as 1.5 × 2 microns. Polysilicon is a linear, brittle material and it is not difficult to measure its tensile strength, which is measured here to be on the order of 1.3 GPa. It is considerably more difficult to measure Young’s modulus, and two approaches are used here. In the first, strain is extracted from the force-displacement plot of the tensile test. The second uses two gold lines for laser interferometry to measure strain directly on the tensile specimen. Both approaches yield similar results, but the measured values are lower than the 169 GPa measured earlier on wider polysilicon specimens. Specimens 3.5 microns thick had a modulus of 142 ± 25 GPa, and those 1.5 microns thick showed 136 ± 14 Gpa. The techniques and procedures along with preliminary results are presented here.
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Letcher, Todd, and Megan Waytashek. "Material Property Testing of 3D-Printed Specimen in PLA on an Entry-Level 3D Printer." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39379.

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An entry level consumer priced 3d-printer, the MakerBot Replicator 2x, was used to print specimen to conduct tensile, flexural and fatigue testing. Average priced, generic brand PLA material was used (similar to the filament a home user may purchase). Specimen were printed at raster orientation angles of 0°, 45° and 90° to test orientation effects on part strength. PLA filament was also tensile tested. Tensile testing of the 3d-printed specimens showed that the 45° raster orientation angle made the strongest specimen at an ultimate tensile strength of 64 MPa. The 0° and 90° raster orientation were not much less at 58 MPa and 54 MPa. A 3-point bending fixture was used to conduct flexural testing on printed specimen. For this type of testing, the 0° raster orientation produced the strongest parts with an ultimate bending stress of 102 MPa. Both the 45° and 90° raster orientations had similar results at 90 MPa and 86 MPa. For the fatigue testing, there was no clear best option, but there was a clearly worst option, the 90° raster orientation. This orientation clearly had lower fatigue lives than either of the other two raster orientations. The other two raster orientations, 0° and 45°, were very similar. PLA filament testing using bollard style grips, showed that the PLA filament exhibited mechanical properties similar to that of printed specimen — when tested at high enough strain rates that creep damage didn’t play a significant role. This may lead to implications for recycling failed 3d-print jobs and turning it back into reusable filament.
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Farahikia, Mahdi, Sunilbhai Macwan, Fereidoon Delfanian, and Zhong Hu. "Evaluating the Mechanical Properties of Carbon Fiber Reinforced Polymer Matrix Composite Materials at Room and Elevated Temperatures." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85671.

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A series of tensile, compression and shear tests in room temperature were carried out on carbon fiber reinforced polymer matrix composite materials (IM7/PEEKEK) to evaluate their mechanical properties. Also tensile tests at 160 degrees Fahrenheit (72 degrees Celsius) in longitudinal and transverse directions were done to study the effects of such temperature on the tensile strength of the mentioned composite materials. The setup of the testing equipment and the furnace that was used to provide elevated temperature conditions limited the possibility of conducting compressive and shear tests at high temperature as well as raising the temperature to higher levels. The experiments were set up in accordance with ASTM standards that best corresponded to the test specifications. Specimens were categorized into groups according to their nature of testing. All the specimens were reinforced at both ends by means of tabs which were bonded on both faces to reduce the effects of the external pressure exerted on them through the grips of the testing machines and were tested until failure. Load, elongation (displacement) and strain data were recorded by means of strain gages and data acquisition systems. The accuracy of the experimental data for the room temperature portion of the experiments is verified by comparing them to those of the most equivalent composite family, as having not been given any information regarding the structural properties and manufacturing processes of the composite materials that were used throughout the experiments made it difficult to find exact ASTM standards and reference materials for the testing and comparison of results. The results of the experiments showed that the tensile strength of this particular composite material is not effected by the 160 degrees Fahrenheit temperature; a point that is proved by the literature indicating their specific and sensitive application in aircraft heat dissipation [1].
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Ziegler, Jule Anna, Uros Stevanovic, David Groep, Ian Neilson, David P. Kelsey, and Maarten Kremers. "Making Identity Assurance and Authentication Strength Work for Federated Infrastructures." In International Symposium on Grids & Clouds 2021. Trieste, Italy: Sissa Medialab, 2021. http://dx.doi.org/10.22323/1.378.0029.

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Chen, Zeng, and Keren Wang. "Using Indirect Communications to Improve Relationship Strength Estimation." In 2017 13th International Conference on Semantics, Knowledge and Grids (SKG). IEEE, 2017. http://dx.doi.org/10.1109/skg.2017.00047.

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Anggita, Gustiana, Hari Rachman, Mohammad Ali, Sugiarto Sugiarto, and Siti Mukarromah. "The Relationship Between Arm Muscle Strength and Grip Strength on Throwing Distance." In Proceedings of the 5th International Conference on Sports, Health, and Physical Education, ISMINA 2021, 28-29 April 2021, Semarang, Central Java, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.28-4-2021.2312136.

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Reports on the topic "Grips strength"

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Corscadden, Louise, and Anjali Singh. Grip Strength Test In Rodents. ConductScience, January 2023. http://dx.doi.org/10.55157/cs2023109.

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The grip strength test is one of the most commonly applied tests in animal laboratories to measure neuromuscular functions or disorders. It was first developed in the 1970s. Today a wide range of techniques are available to study muscle strength in rodents. These methods are categorized into two categories:[2] Invasive method: In situ and in vitro measurements of muscle force are invasive methods. Non-invasive method: This method only includes in vivo measurement tests to analyze muscle force such as treadmill tests, wire hang tests, swimming endurance, vertical pole test, and grip strength tests. The most convenient technique of all tests is the grip strength test. It’s most convenient and causes less stress to animals. The grip test has been widely used in order to investigate the phenotypes of transgenic mice with neuromuscular disease and evaluate potential compounds involved in the motor functioning of organisms. The tests have been serving the purpose for 30 years either alone or in combination with other tests.
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Shen, Oscar, Wen-Chih Liu, and Chih-Ting Chen. Effectiveness and safety of volar locked plate, K-wiring and external fixator, and the conservative treatment for distal radius fracture in the elderly: Systematic review and Network meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, February 2022. http://dx.doi.org/10.37766/inplasy2022.12.0009.

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Review question / Objective: Patient/Problem: The elder(age>60), with distal radius fracture; Intervention: conservative treatment; Comparison of intervention: volar locked plate, K-wire, external fixator; Clinical Outcome: Grip strength, Disabilities of the Arm, Shoulder, and Hand, Patient-rated wrist evaluation score, range of motion. Condition being studied: The elder(age>60) with distal radius fracture, received conservative treatment or surgical treatment.
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Routine measurement of grip strength can help assess frailty in hospital. National Institute for Health Research, October 2018. http://dx.doi.org/10.3310/signal-000650.

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SHEAR BEHAVIOR OF NOVEL DEMOUNTABLE BOLTED SHEAR CONNECTOR FOR PREFABRICATED COMPOSITE BEAM. The Hong Kong Institute of Steel Construction, December 2022. http://dx.doi.org/10.18057/ijasc.2022.18.4.2.

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Bolted shear connectors offer alternatives to achieve steel-concrete composite action instead of conventional welded headed studs especially for prefabricated constructions and demountable composite structures. This paper firstly proposed a new type of demountable steel-concrete bolted shear connectors based on the double-nut friction-grip high strength bolted connector, which modify the upper nut into conical locking nut. This paper performed ten full scale push-out tests to study shear behaviors of the developed new type of connectors. Testing parameters included bolt configuration, strength, diameter of bolts and strength of infilled grout. Test results indicate that shear behaviors and slip capacity of the conventional bolted connectors are significantly improved when the bolted connector incorporating with conical locking nut. The influences of these studied parameters on shear behaviour of novel bolted shear connectors are revealed and discussed. The developed novel demountable connector exhibits an average 25% improvement in ultimate shear resistance over conventional bolted connectors. Moreover, the shear stiffness of the developed bolted connectors is about six times of the conventional bolted connector through eliminating the clearance between steel flange hole and bolt shank.
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