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Journal articles on the topic 'Grip'

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Author: Grafiati

Published: 4 June 2021

Last updated: 24 January 2023

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1

Higashi, Tatsuichiro, Yuko Iwasaki, Yasuo Ohnishi, and Sueharu Horinouchi. "A-Factor and Phosphate Depletion Signals Are Transmitted to the Grixazone Biosynthesis Genes via the Pathway-Specific Transcriptional Activator GriR." Journal of Bacteriology 189, no. 9 (March 2, 2007): 3515–24. http://dx.doi.org/10.1128/jb.00055-07.

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ABSTRACT Grixazone (GX), which is a diffusible yellow pigment containing a phenoxazinone chromophore, is one of the secondary metabolites under the control of A-factor (2-isocapryloyl-3R-hydroxymethyl-γ-butyrolactone) in Streptomyces griseus. GX production is also induced by phosphate starvation. The whole biosynthesis gene cluster for GX was cloned and characterized. The gene cluster consisting of 13 genes contained six transcriptional units, griT, griSR, griR, griAB, griCDEFG, and griJIH. During cultivation in a phosphate-depleted medium, the six promoters were activated in the order (i) griR, (ii) griC and griJ, and (iii) griT, griS, and griA. Disruption of griR, which encodes a SARP family transcriptional regulator, abolished the transcriptional activation of all other genes in the cluster. In addition, ectopic expression of griR from a constitutively active promoter resulted in GX overproduction even in the absence of AdpA, a key transcriptional activator in the A-factor regulatory cascade, and in the presence of phosphate at a high concentration. GriR monomers bound direct repeat sequences in the griC and griJ promoters in a cooperative manner. Therefore, the early active genes (griCDEFG and griJIH), all of which, except for griG (which encodes a transporter-like protein), encode the GX biosynthesis enzymes, were directly activated by GriR. The transcription of griR was greatly reduced in the presence of phosphate at a high concentration and was hardly detected in the absence of AdpA. These findings showed that both A-factor and phosphate depletion signals were required for griR transcription and both signals were transmitted to the GX biosynthesis genes solely via the griR promoter.

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2

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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3

Ehrsson, H. Henrik, Anders Fagergren, Tomas Jonsson, Göran Westling, Roland S. Johansson, and Hans Forssberg. "Cortical Activity in Precision- Versus Power-Grip Tasks: An fMRI Study." Journal of Neurophysiology 83, no. 1 (January 1, 2000): 528–36. http://dx.doi.org/10.1152/jn.2000.83.1.528.

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Most manual grips can be divided in precision and power grips on the basis of phylogenetic and functional considerations. We used functional magnetic resonance imaging to compare human brain activity during force production by the right hand when subjects used a precision grip and a power grip. During the precision-grip task, subjects applied fine grip forces between the tips of the index finger and the thumb. During the power-grip task, subjects squeezed a cylindrical object using all digits in a palmar opposition grasp. The activity recorded in the primary sensory and motor cortex contralateral to the operating hand was higher when the power grip was applied than when subjects applied force with a precision grip. In contrast, the activity in the ipsilateral ventral premotor area, the rostral cingulate motor area, and at several locations in the posterior parietal and prefrontal cortices was stronger while making the precision grip than during the power grip. The power grip was associated predominately with contralateral left-sided activity, whereas the precision-grip task involved extensive activations in both hemispheres. Thus our findings indicate that in addition to the primary motor cortex, premotor and parietal areas are important for control of fingertip forces during precision grip. Moreover, the ipsilateral hemisphere appears to be strongly engaged in the control of precision-grip tasks performed with the right hand.

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4

Madani, V., and D. Novosel. "Getting a grip on the grid." IEEE Spectrum 42, no. 12 (December 2005): 42–47. http://dx.doi.org/10.1109/mspec.2005.1549781.

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5

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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6

Pazderka, M. Peggy, Melissa Henderson, and M. Susan Hallbeck. "Gender, Grip Span, Anthropometric Dimensions, and Time Effects on Grip Strength and Discomfort." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 40, no. 13 (October 1996): 707–11. http://dx.doi.org/10.1177/154193129604001327.

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The objective of this study is to examine the relationship among anthropometric dimensions, grip span, discomfort, gender, and grip strength. The 24 volunteer subjects (12 males, 12 females) performed five grips squeezing their hardest for 2 minutes at each of the five grip spans on the Jamar grip dynamometer. The grip strength was recorded using the UPC software and then averaged for each of the 30 second intervals. The data was analyzed using ANOVA, post-hoc (Tukey) hypothesis tests, and regression. In the ANOVA analysis gender, grip span, time, and the interactions of gender-grip span, grip span-time, and time-gender were determined to be the significant effects. In all four of the 30 second intervals, average grip strength was significantly higher for males than females. Female average grip strength was found to be 70% of male average grip strength. The post-hoc (Tukey) tests showed that grip spans 3, 4, and 2 were significantly higher than grip spans 5 and 1. The anthropometry of several segments of the hand were found to be important predictors of grip strength and discomfort in the stepwise regressions. Grip span 4 had the highest average severity of discomfort, while grip span 1 had the most areas of the hand experiencing discomfort.

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7

Saeterbakken, Atle Hole, Nicolay Stien, Helene Pedersen, Tom Erik Jorung Solstad, Kristoffer Toldnes Cumming, and Vidar Andersen. "The Effect of Grip Width on Muscle Strength and Electromyographic Activity in Bench Press among Novice- and Resistance-Trained Men." International Journal of Environmental Research and Public Health 18, no. 12 (June 14, 2021): 6444. http://dx.doi.org/10.3390/ijerph18126444.

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Background: This study compared the muscle activity and six repetition maximum (6-RM) loads in bench press with narrow, medium, and wide grip widths with sub-group comparisons of resistance-trained (RT) and novice-trained (NT) men. Methods: After two familiarization sessions, twenty-eight subjects lifted their 6-RM loads with the different grip widths with measurement of electromyographic activity. Results: Biceps brachii activity increased with increasing grip width, whereas wide grip displayed lower triceps brachii activation than medium and narrow. In the anterior deltoid, greater activity was observed using a medium compared to narrow grip. Similar muscle activities were observed between the grip widths for the other muscles. For the RT group, greater biceps brachii activity with increasing grip width was observed, but only greater activity was observed in the NT group between narrow and wide. Comparing wide and medium grip width, the RT group showed lower triceps activation using a wide grip, whereas the NT group showed lower anterior deltoid activation using a narrow compared to medium grip. Both groups demonstrated lower 6-RM loads using a narrow grip compared to the other grips. Conclusion: Grip widths affect both 6-RM loads and triceps brachii, biceps brachii, and anterior deltoid activity especially between wide and narrow grip widths.

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8

Brown, Jericho. "Grip." Callaloo 26, no. 3 (2003): 692. http://dx.doi.org/10.1353/cal.2003.0075.

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9

Joy Castro. "Grip." Fourth Genre: Explorations in Nonfiction 11, no. 2 (2009): 119–20. http://dx.doi.org/10.1353/fge.0.0083.

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10

Backhaus, Scott, and Michael Chertkov. "Getting a grip on the electrical grid." Physics Today 66, no. 5 (May 2013): 42–48. http://dx.doi.org/10.1063/pt.3.1979.

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11

Takasawa, Masashi, Naohiko Oku, Yasuhiro Osaki, Hiroshi Kinoshita, Masao Imaizumi, Takuya Yoshikawa, Yasuyuki Kimura, et al. "Cerebral and Cerebellar Activation in Power and Precision Grip Movements: An H215O Positron Emission Tomography Study." Journal of Cerebral Blood Flow & Metabolism 23, no. 11 (November 2003): 1378–82. http://dx.doi.org/10.1097/01.wcb.0000091258.83091.c2.

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Most human manual grip movements can be divided into power gripping and precision gripping, but central neural control during these tasks remains unclear. We investigated activation of the whole brain to analyze how simple hand movements are performed. The cerebral blood flow of seven healthy right-handed volunteers was measured by H215O positron emission tomography during right grip tasks without gripping a target object. Auditory-cued, repetitive power grips (i.e., fist making) and repetitive precision grips (i.e., opposition of the tip of the index finger and the tip of the thumb) were performed at 1.26 Hz. The areas activated during both tasks were the left primary sensorimotor cortex, caudal portion of the dorsal premotor, caudal portion of the supplementary motor area, cingulate motor area, and the right spinocerebellum and intermediate region of the cerebrocerebellum in comparison with the rest state. The analysis of power grip-precision grip tasks showed the activated peaks in the upper portion of the left sensorimotor area and right cerebellar vermis, but these areas were activated in both the tasks [(power grip-rest) and (precision grip-rest)] with uncorrected P < 0.001 as the statistical criterion. With P < 0.05 corrected as the statistical criterion, the results showed no significant activated peaks in regional cerebral blood flow. Our findings indicate no difference in brain activation between the acts of power grip and precision grip without a target object.

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12

Gu, Shichao, Haifei Zhu, Hui Li, Yisheng Guan, and Hong Zhang. "Optimal Collision-Free Grip Planning for Biped Climbing Robots in Complex Truss Environment." Applied Sciences 8, no. 12 (December 7, 2018): 2533. http://dx.doi.org/10.3390/app8122533.

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Biped climbing robots (BiCRs) can overcome obstacles and perform transition easily thanks to their superior flexibility. However, to move in a complex truss environment, grips from the original point to the destination, as a sequence of anchor points along the route, are indispensable. In this paper, a grip planning method is presented for BiCRs generating optimal collision-free grip sequences, as a continuation of our previous work on global path planning. A mathematic model is firstly built up for computing the operational regions for negotiating obstacle members. Then a grip optimization model is proposed to determine the grips within each operational region for transition or for obstacle negotiation. This model ensures the total number of required climbing steps is minimized and the transition grips are with good manipulability. Lastly, the entire grip sequence satisfying the robot kinematic constraint is generated by a gait interpreter. Simulations are conducted with our self-developed biped climbing robot (Climbot), to verify the effectiveness and efficiency of the proposed methodology.

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13

Resnik, Linda, Frantzy Acluche, and Matthew Borgia. "The DEKA hand: A multifunction prosthetic terminal device—patterns of grip usage at home." Prosthetics and Orthotics International 42, no. 4 (September 15, 2017): 446–54. http://dx.doi.org/10.1177/0309364617728117.

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Background: Research is needed to understand how upper limb prosthesis users take advantage of multiple grip options. Objectives: To quantify usage of DEKA hand grip patterns during home use and compare patterns of usage at home to test sessions. Study design: Observational study design. Methods: Data were collected from 21 subjects. Engineering data on grip were downloaded at various intervals. Proportion of time in each grip was calculated for the first 4 weeks of home use, later months, and test sessions (testing use) and compared statistically across intervals. Exploratory analyses compared grip proportion by DEKA Arm level and prior prosthesis use. Results: Three most commonly used grips during home use were power, pinch open, and lateral pinch. There were no significant differences between grip use during the first month and later months. Power grip was used 55% of the time at home and 23% of the time in testing use. Pinch closed, lateral, and chuck grip were used less at home than in tests. Comparisons were by configuration level and prosthetic use and no significant differences were found. Conclusion: Patterns of DEKA hand grip usage differed between home and test environments, suggesting that users relied on fewer grip patterns at home. Clinical relevance These findings have implications for prosthetic training with multi-articulating terminal devices.

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14

Tseng, Mei Hui. "Development of Pencil Grip Position in Preschool Children." Occupational Therapy Journal of Research 18, no. 4 (October 1998): 207–24. http://dx.doi.org/10.1177/153944929801800406.

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Pencil grip is an aspect of handwriting that has been addressed by occupational therapists who treat children with handwriting difficulties. However, there has been little research investigating the developmental progression of pencil grip in Taiwanese children. Without knowledge of normal development, therapists cannot justify a diagnosis of “unusual” or “bizarre” pencil grips. This study was designed to investigate the developmental progression in pencil grips in Taiwanese children. The subjects were 326 children aged 2.5 to 6.4 years. The type of grips each child used to perform a drawing task was videotaped. A developmental assessment of pencil grips compiled by Schneck and Henderson was used to rate children's grip positions. A developmental pregression was noted and 14 grip patterns were identified. About half of the 3- to 3.4-year old children were able to employ a mature grip when drawing in a 7.89 cm x7 cm box. By the age of 4, about three fourths of the children were able to use mature grips to draw. For children aged 5 years and older, the percentage increased to more than 90%. Comparison of the results with those of Schneck and Henderson (1990) suggests that Taiwanese children 3.5 to 5.9 years of age are more advanced than American children of the same age. In addition, the percentage of Taiwanese children using the lateral tripod is much higher than that of American children. Possible reasons for these differences are proposed. Implications for occupational therapy and suggestions for future studies are discussed.

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15

Buniya, A., Ali H. Al-Timemy, A. Aldoori, and Rami N. Khushaba. "Analysis of Different Hand and Finger Grip Patterns using Surface Electromyography and Hand Dynamometry." Al-Khwarizmi Engineering Journal 16, no. 2 (June 1, 2020): 14–23. http://dx.doi.org/10.22153/kej.2020.05.001.

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Recording an Electromyogram (EMG) signal is essential for diagnostic procedures like muscle health assessment and motor neurons control. The EMG signals have been used as a source of control for powered prosthetics to support people to accomplish their activities of daily living (ADLs). This work deals with studying different types of hand grips and finding their relationship with EMG activity. Five subjects carried out four functional movements (fine pinch, tripod grip and grip with the middle and thumb finger, as well as the power grip). Hand dynamometer has been used to record the EMG activity from three muscles namely; Flexor Carpi Radialis (FCR), Flexor Digitorum Superficialis (FDS), and Abductor Pollicis Brevis (ABP) with different levels of Maximum Voluntary Contraction (MVC) (10-100%). In order to analyze the collected EMG and force data, the mean absolute value of each trial is calculated followed by a calculation of the average of the 3 trials for each grip for each subject across the different MVC levels utilized in the study. Then, the mean and the standard deviation (SD) across all participants (3 males and 2 females) are calculated for FCR, FDS and APB muscles with multiple % MVC, i.e 10, 30, 50, 70 % MVC for each gesture. The results showed that APB muscle has the highest mean EMG activity across all grips, followed by FCR muscle. Furthermore, the grip with the thumb and middle fingers is the grip with the highest EMG activity for 10-70% MVC than the power grip. As for the 100% MVC, thumb and middle fingers grip achieved the highest EMG activity for APB muscle, while the power grip has the highest EMG activity for both FCR and FDS muscles.

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Irawan, Dwi. "Efektivitas Three Finger Grip Dengan Four Finger Grip Terhadap Akurasi Sidehand Throw Posisi Infield Olahraga Softball." Journal of Physical Activity and Sports (JPAS) 1, no. 1 (December 31, 2020): 32–38. http://dx.doi.org/10.53869/jpas.v1i1.8.

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The background of this research is that players often make mistakes when throwing a side throw at the Infield position. The formulation of the research problem is which is more effective using Three Finger Grips with Four Finger Grips to the accuracy of Sidehand Throw at the Infield position in Softball, Softball Team, Universitas PGRI Semarang 2020. The purpose of this study is to see the effectiveness of the throws using Three Finger Grips with Four Finger Grip on the accuracy of the Sidehand Throw at the Infield position in Softball, the Softball Team of the PGRI University Semarang 2020. In this research, to collecting the data is using a descriptive method. The technique of analysis is using a significant similarity test for two means (one party). In this study, the samples used 13 male students of the softball team Universitas PGRI Semarang 2020 with the saturated sampling technique. The mean of three fingers is 22, the standard deviation (Std.Deviation) is 3.78, the minimum and maximum of values are 18 and 30, the mean of four fingers is 26, the standard deviation (Std. Deviation) is 4.89, minimum and maximum of values are 20 and 34. The results of the calculation obtained the value of thitung (2,086) > ttabel (1,70) so that H0 is rejected, which can be concluded that the four-finger grip is more effective than three-finger grips on sidehand accuracy throw at the infield position in the softball team of Universitas PGRI Semarang 2020. The conclusion using a three-finger grip on the accuracy of the sidehand throw at the infield position in the softball team Universitas PGRI Semarang 2020 are categorized as effective. While the results of the throw using four-finger grips on the accuracy of sidehand throws at the infield position in the softball team Universitas PGRI Semarang 2020 are categorized as effective. The four-finger grip is more effective than the three-finger grip on the accuracy of sidehand throws at the infield position in the softball team Universitas PGRI Semarang 2020. It is hoped that athletes can use the four-finger grip because it is more effective for the accuracy of sidehand throws at the infield position in softball. Keywords: Three Fingers, Four Fingers, Sidehand Throw Infield Softball. Latar belakang dari penelitian ini adalah pemain sering melakukan kesalahan saat melakukan lemparan samping pada posisi infield. Rumusan masalah penelitian ini yaitu manakah yang lebih efektif menggunakan Three Finger Grip dengan Four Finger Grip terhadap akurasi Sidehand Throw pada posisi Infield dalam olahraga Softball tim Softball Universitas PGRI Semarang 2020. Tujuan penelitian ini yaitu untuk mengetahui efektivitas hasil lemparan dengan menggunakan Three Finger Grip dengan Four Finger Grip terhadap akurasi Sidehand Throw pada posisi Infield dalam olahraga Softball tim Softball Universitas PGRI Semarang 2020. Pengumpulan data penelitian ini menggunakan metode deskritif. Teknik analisis yang dipakai menggunakan uji signifikan kesamaan dua rata-rata(satu pihak). Pada penelitian ini sampel yang digunakan sebanyak 13 mahasiswa putra tim softball Universitas PGRI Semarang dengan teknik Sampling Jenuh. Hasil rata-rata(mean) three fingers sebesar 22, Simpangan baku (Std.Deviation) sebesar 3,78, nilai minimum dan maksimum sebesar 18 dan 30, Hasil rata-rata(mean) four fingers sebesar 26, Simpangan baku (Std.Deviation) sebesar 4,89, nilai minimum dan maksimum sebesar 20 dan 34. Hasil perhitungan diperoleh nilai thitung (2,086) > ttabel (1,70) sehingga H0 ditolak yang dapat disimpulkan bahwa Four finger grip lebih efektif dibandingkan three finger grip terhadap akurasi sidehand throw pada posisi infield dalam olahraga softball tim softball Universitas PGRI Semarang 2020. Kesimpulannya adalah bahwa hasil lemparan menggunakan three finger grip terhadap akurasi sidehand throw pada posisi infield dalam olahraga softball tim softball Universitas PGRI Semarang 2020 berkategori efektif. Sedangkan hasil lemparan menggunakan four finger grip terhadap akurasi sidehand throw pada posisi infield dalam olahraga softball tim softball Universitas PGRI Semarang 2020 berkategori efektif. Hasil Perbandingan four finger grip lebih efektif daripada three finger grip terhadap akurasi sidehand throw pada posisi infield dalam olahraga softball tim softball Universitas PGRI Semarang 2020. Diharapkan bagi atlet dapat menggunakan four finger grip karena lebih efektif terhadap akurasi sidehand throw pada posisi infield dalam cabang olahraga softball. Kata kunci: Tiga jari, empat jari, lemparan samping infield softball

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17

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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18

Frimand Rönnow, Carl-Fredrik, Bengt Jeppsson, and Henrik Thorlacius. "A New Needle Holder Facilitating Palm Grip Suturing." European Surgical Research 54, no. 1-2 (October 24, 2014): 55–63. http://dx.doi.org/10.1159/000367941.

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Purpose: The finger grip and the palm grip are the most common needle holder grips for hand suturing in surgery. The major advantages of the palm grip are an increased versatility and the possibility to apply controlled force. However, there is a risk for a potential loss of precision and uncontrolled movement of the needle when disengaging the ratchet mechanism of the palmed instrument. The purpose of this study was to develop a new needle holder, referred to as the Frimand needle holder (FNH), and evaluate surgeons' perception of it. It was designed to overcome the above-mentioned disadvantages, hence facilitating palm and finger grip suturing. Moreover, we evaluated suture precision and attitudes related to the use of the finger grip and the palm grip. Methods: Thirty-two surgeons performed sutures utilizing both the palm grip and the finger grip on postmortem porcine skin and small bowels, comparing the FNH to a standard Crile-Wood needle holder (CWNH). The participants assessed the FNH on an evaluation form. Precision was determined by letting the surgeons perform 20 sutures utilizing the finger grip and the palm grip on a polyurethane pad with premarked insert and exit sites. The distance between the designated exit site and the real exit site defined precision and was measured with a digital sliding dimension scale. Results: We found that 28 (88%) of the 32 surgeons use the palm grip to some extent, and 31 surgeons (97%) experienced an advantage when suturing with the FNH using the palm grip. Twenty-four (75%) of the 32 surgeons would prefer to suture with the FNH instead of the CWNH. There was no significant difference in precision between the finger grip and the palm grip. Conclusion: This study presents a new needle holder facilitating palm grip suturing. A majority of the participants preferred the new FNH over the standard CWNH for hand suturing.

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19

Kotecha, Mansi Milanbhai, and Mansee Desai. "Correlation of BMI with Hand Grip and Pinch Grip Strength in Children of 6-12 Years." International Journal of Health Sciences and Research 12, no. 11 (November 8, 2022): 33–42. http://dx.doi.org/10.52403/ijhsr.20221106.

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Background And Objective: Many activities of daily living involve the use of the hands with various hand grips for doing tasks. The nutritional status can influence the muscle quality and so, the muscle strength. The association between the muscle strength and underweight and the muscle strength and overweight/obesity were studied separately by many researchers, but very few studies have investigated the longitudinal assessment of the BMI with the muscle strength in various BMI ranges in children. Therefore, the purpose of the study was to determine whether BMI is associated with hand grip and pinch grip strength in typically developing children of 6-12 years of age. The objective of the study was to analyse the correlation between BMI with hand grip strength and pinch grip strength. Method: Total 330 typically developing school-going children from 6-12 years were taken. BMI percentile was measured according to their age, height, and weight. Hand grip strength and Pinch grip strength were measured. Result: Spearman correlation test was used to analyse the data. A significant and weak positive correlation was found between BMI percentile and Hand grip strength(p<0.05). A significant and very weak positive result was found between BMI percentile and Pinch Grip strength. Conclusion: The study leads to the conclusion that There is weak positive correlation between BMI percentile and HGS. There is very weak positive correlation between BMI percentile and PGS There is strong correlation between HGS and PGS. Key words: BMI, Hand grip strength, Pinch grip strength, school-age children.

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20

Wypychowski, Jarosław, Jarosław Pytliński, Łukasz Skorwider, Mirosław Nazaruk, Krzysztof Benedyczak, Michał Wroński, and Piotr Bała. "Life sciences grid in EUROGRID and GRIP projects." New Generation Computing 22, no. 2 (June 2004): 147–56. http://dx.doi.org/10.1007/bf03040953.

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21

Ehrsson, H. Henrik, Anders Fagergren, and Hans Forssberg. "Differential Fronto-Parietal Activation Depending on Force Used in a Precision Grip Task: An fMRI Study." Journal of Neurophysiology 85, no. 6 (June 1, 2001): 2613–23. http://dx.doi.org/10.1152/jn.2001.85.6.2613.

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Recent functional magnetic resonance imaging (fMRI) studies suggest that the control of fingertip forces between the index finger and the thumb (precision grips) is dependent on bilateral frontal and parietal regions in addition to the primary motor cortex contralateral to the grasping hand. Here we use fMRI to examine the hypothesis that some of the areas of the brain associated with precision grips are more strongly engaged when subjects generate small grip forces than when they employ large grip forces. Subjects grasped a stationary object using a precision grip and employed a small force (3.8 N) that was representative of the forces that are typically used when manipulating small objects with precision grips in everyday situations or a large force (16.6 N) that represents a somewhat excessive force compared with normal everyday usage. Both force conditions involved the generation of time-variant static and dynamic grip forces under isometric conditions guided by auditory and tactile cues. The main finding was that we observed stronger activity in the bilateral cortex lining the inferior part of the precentral sulcus (area 44/ventral premotor cortex), the rostral cingulate motor area, and the right intraparietal cortex when subjects applied a small force in comparison to when they generated a larger force. This observation suggests that secondary sensorimotor related areas in the frontal and parietal lobes play an important role in the control of fine precision grip forces in the range typically used for the manipulation of small objects.

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Ng, B. H., S. M. Chou, and V. Krishna. "The Influence of Gripping Techniques on the Tensile Properties of Tendons." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 219, no. 5 (May 1, 2005): 349–54. http://dx.doi.org/10.1243/095441105x34239.

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Gripping is a major challenge faced in the tensile testing of tendons. As soft and aqueous materials, tendons are prone to slip and experience premature failure during mechanical testing. Several gripping methods were attempted and evaluated, including serrated jaw, sandpaper, frozen ends, and air-dried ends. It was found that 1 kN pneumatic grips (Shimadzu Company) lined with cardboard provided an adequate grip without perceptible slip and damage to the tendons. It was found that using the pneumatic grips with cardboard lining the stress concentration at the grip-specimen interface reduced substantially. An analysis of specimens that failed at the grip-specimen interface versus those that failed at mid-substance shows that there was no significant difference in their tensile properties.

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Okreglak, Les M. "Getting a Firmer Grip." Mechanical Engineering 122, no. 02 (February 1, 2000): 74–76. http://dx.doi.org/10.1115/1.2000-feb-7.

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This article explains joint engineering efforts of engineers in designing a safer connector between the cable and chair on the lift. Whistler Mountain, along with two other ski areas in the British Columbia/Alberta region, Silver Star and Lake Louise, joined to find a replacement for the grips that would fit the existing chairlift structure and could be implemented quickly. The new grip design eliminates dependence on gravity to secure the grip to the cable on the ski lift. Helical springs exert the entire gripping force and prevent slippage. Linear static stress analyses were performed under two specific conditions: when the jaws were closed and attached to the cable, and when the jaws were open for transition to the loading track, where the force of the springs was the greatest. Built-in visualization tools in the finite element analysis (FEA) software were used to view the stress results with a von Mises display. According to the conclusive results of the testing, the grip was solid. With the tough design criteria, rigorous testing in manufacturing, and scrutiny by a regulatory body, Pol-X West was presented with a situation that ensured a very safe product while using the existing lift equipment and minimizing the resorts’ downtime. The lifts installed with the new grips have since operated successfully, without incident.

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Yahagita, Yasutaka, Kiyoshi Shikino, and Masatomi Ikusaka. "Grip myotonia." BMJ Case Reports 14, no. 5 (May 2021): e240779. http://dx.doi.org/10.1136/bcr-2020-240779.

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Means, David. "The Grip." Antioch Review 57, no. 4 (1999): 463. http://dx.doi.org/10.2307/4613897.

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Balkan, İlker İnanç. "Pandemik grip." Journal of Experimental and Clinical Medicine 29, s3 (January 30, 2013): S193—S200. http://dx.doi.org/10.5835/jecm.omu.29.s3.016.

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Per Dahl. "Grip mikrofonen?" Studia Musicologica Norvegica 35, no. 1 (October 29, 2009): 156–76. http://dx.doi.org/10.18261/issn1504-2960-2009-01-10.

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MARX, Ive. "Losing Grip." Ethical Perspectives 3, no. 1 (April 1, 1996): 29–38. http://dx.doi.org/10.2143/ep.3.1.563045.

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David Means. "The Grip." Antioch Review 74-75, no. 4-1 (2017): 986. http://dx.doi.org/10.7723/antiochreview.74-75.4-1.0986.

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Horowitz, Beveriy, Robert Tollin, and Gary Cassidy. "Grip Strength." Physical & Occupational Therapy In Geriatrics 15, no. 1 (October 7, 1997): 53–64. http://dx.doi.org/10.1300/j148v15n01_04.

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Horowitz, Beveriy P., Robert Tollin, and Gary Cassidy. "Grip Strength." Physical & Occupational Therapy In Geriatrics 15, no. 1 (January 1997): 53–64. http://dx.doi.org/10.1080/j148v15n01_04.

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&NA;. "GRIP Tips." PACEsetterS 5, no. 1 (January 2008): 27. http://dx.doi.org/10.1097/01.jbi.0000393347.02875.c9.

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&NA;. "GRIP Tips." PACEsetterS 4, no. 3 (July 2007): 27. http://dx.doi.org/10.1097/01.jbi.0000393573.33063.95.

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&NA;. "GRIP Tips." PACEsetterS 4, no. 2 (April 2007): 27. http://dx.doi.org/10.1097/01.jbi.0000396212.12045.70.

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Sudo, K., Y. Tajima, A. Matsumoto, and K. Tashiro. "GRIP MYOTONIA." Acta Clinica Belgica 65, no. 6 (December 2010): 448. http://dx.doi.org/10.1179/acb.2010.65.6.015.

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Johnson, Joy. "Rupert's grip?" British Journalism Review 9, no. 1 (March 1998): 13–19. http://dx.doi.org/10.1177/095647489800900103.

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Gunnewiek, Rik Klein. "Geen grip." Maatwerk 15, no. 6 (December 2014): 6–8. http://dx.doi.org/10.1007/s12459-014-0088-6.

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Barash, Moshe M. "Cut-grip." Journal of Manufacturing Systems 6, no. 2 (January 1987): 162. http://dx.doi.org/10.1016/0278-6125(87)90041-0.

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Milanese, Steve. "Grip meter." Occupational Medicine 70, no. 2 (November 6, 2019): 142–43. http://dx.doi.org/10.1093/occmed/kqz133.

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Joy Castro. "Getting "Grip"." Fourth Genre: Explorations in Nonfiction 11, no. 2 (2009): 121–27. http://dx.doi.org/10.1353/fge.0.0096.

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Strukov, Dmitri B. "Tightening grip." Nature Materials 17, no. 4 (January 22, 2018): 293–95. http://dx.doi.org/10.1038/s41563-018-0020-x.

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Lyon, C. C., J. O'Driscoll, U. Erikstam, M. Bruze, and M. H. Beck. "Bowlers' grip." Contact Dermatitis 38, no. 4 (April 1998): 223. http://dx.doi.org/10.1111/j.1600-0536.1998.tb05719.x.

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Cha, Soo Min, Hyun Dae Shin, Kyung Cheon Kim, and Jung Woo Park. "Comparison of Grip Strength Among 6 Grip Methods." Journal of Hand Surgery 39, no. 11 (November 2014): 2277–84. http://dx.doi.org/10.1016/j.jhsa.2014.06.121.

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Kashiwagura, Daniel Brandão, and Emerson Franchini. "The grip dispute (kumi-kata ) in judo: A scoping review." Revista de Artes Marciales Asiáticas 17, no. 1 (January 1, 2022): 1. http://dx.doi.org/10.18002/rama.v17i1.7030.

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<p>In judo combat, the grip (<em>kumi-kata</em>) helps to control and to dominate the opponent, and per the current rules is a prerequisite to executing a throwing technique. In this scoping review, articles and reviews published in scientific journals in English were searched in Web of Science, Scopus, PubMed and SPORTDiscus databases from inception until December 2020. The studies were classified into technical-tactical or time-motion analyses, grip or grip attempts, grip locations on <em>uke</em>´s (athlete receiving the attack) <em>judogi</em> (judo uniform) or hands that performed the grips, and one or two hands holding. Articles evaluating the physical and physiological capacities of grip dispute were excluded. From 286 articles identified, 41 were included in the final selection. Two reviewers screened the records independently for eligibility. One reviewer extracted all data and the other reviewed the data for accuracy. The main results showed that: i) more experienced athletes hold the <em>judogi</em> for less time before attacking and focus their vision on the face and collar; ii) male athletes, especially heavy ones, hold longer in the <em>judogi</em> and use more defensive grips (collar and collar); iii) the most used grip was collar and sleeve; iv) the most used position was <em>kenka-yotsu</em> (opposite sides). The result of this scoping review may assist coaches and athletes to develop training strategies according to the athletes’ technical-tactical objectives, as well as future investigations that can be conducted related to grip dispute in judo.</p>

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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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Escamilla, Rafael F., Glenn S. Fleisig, Coop DeRenne, Marcus K. Taylor, Claude T. Moorman, Rodney Imamura, Edward Barakatt, and James R. Andrews. "Effects of Bat Grip on Baseball Hitting Kinematics." Journal of Applied Biomechanics 25, no. 3 (August 2009): 203–9. http://dx.doi.org/10.1123/jab.25.3.203.

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A motion system collected 120-Hz data from 14 baseball adult hitters using normal and choke-up bat grips. Six swings were digitized for each hitter, and temporal and kinematic parameters were calculated. Compared with a normal grip, the choke-up grip resulted in 1) less time during stride phase and swing; 2) the upper torso more opened at lead foot contact; 3) the pelvis more closed and less bat linear velocity at bat-ball contact; 4) less range of motion of the upper torso and pelvis during swing; 5) greater elbow flexion at lead foot contact; and 6) greater peak right elbow extension angular velocity. The decreased time during the stride phase when using a choke-up grip implies that hitters quicken their stride when they choke up. Less swing time duration and less upper torso and pelvis rotation range of motion using the choke-up grip supports the belief of many coaches and players that using a choke-up grip results in a “quicker” swing. However, the belief that using a choke-up grip leads to a faster moving bat was not supported by the results of this study.

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Mentes, Ali, and Julide Atukeren. "A study of manual toothbrushing skills in children aged 3 to 11 years." Journal of Clinical Pediatric Dentistry 27, no. 1 (September 1, 2003): 91–94. http://dx.doi.org/10.17796/jcpd.27.1.t774rg1w66l2mw10.

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The aim of the study was to evaluate toothbrushing management and ability of children in relation to age and gender. The study population consisted of 75 children and were divided into three equal groups as 3-5, 6-8 and 9-11 years of age.The grip type during toothbrushing was recorded on videotape.The most preferred grip types were distal (73%) followed by power (43%) and oblique grips (29%). There were a statistically significant differences between age groups and the grip types (p<0.001) but no significant difference was seen between boys and girls in grip preferences (p>0.05).The mean duration of toothbrushing was shorter in 3-5 years of age group (28 seconds) than the 6-8 and 9-11 age groups (35 and 47 seconds respectively).

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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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Ricciardi, Benjamin F., Scott R. Nodzo, Kathryn Oi, Yuo-yu Lee, and Geoffrey H. Westrich. "Radiographic Outcomes of Cable-Plate versus Cable-Grip Fixation in Periprosthetic Fractures of the Proximal Femur." HIP International 27, no. 6 (May 23, 2017): 584–88. http://dx.doi.org/10.5301/hipint.5000496.

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Background Newer generation cable-plate designs are commonly used for periprosthetic proximal femur fractures; however, comparisons relative to cable-grips remain limited. The aim of this study was to compare radiographic healing rates of cable-plate versus cable-grip fixation for periprosthetic proximal femur fractures. Patients and methods Consecutive patients with an acute or chronic Vancouver A, B1, or B2 periprosthetic proximal femur fracture undergoing trochanteric fixation with a cable-plate (n = 46 cases) or cable-grip (n = 24 cases) system were identified retrospectively from a single-centre hospital database (mean follow-up 28 months [range 6-89 months]). Demographics, radiographic fracture healing, and complications were compared between the 2 groups. Radiographic union rates were not different between the cable-grip versus cable-plate group (67% vs. 76% respectively; p = 0.4). Healing rates of greater trochanteric fractures alone were not different between the cable-plate versus cable-grip groups (75% vs. 71% respectively; p = 0.38). The cable-plates were used for a more diverse range of fracture patterns relative to the cable-grips. Results An increased number of cables was associated with radiographic healing (odds ratio 14 [95% confidence interval 2-64]; p = 0.01), and body mass index had a negative correlation with radiographic healing (odds ratio −0.4 [95% confidence interval 0.5-0.9]. Conclusions Similar rates of periprosthetic fracture healing were seen using a cable-grip versus cable-plate system; however, the cable-plate system could be used for a more diverse range of fracture patterns.

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Kurillo, Gregorij, Tadej Bajd, and Roman Kamnik. "Static analysis of two-fingered grips." Journal of Automatic Control 12, no. 1 (2002): 38–45. http://dx.doi.org/10.2298/jac0201038k.

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In the paper a static analysis of two-fingered grips is presented. Importance of grasp analysis in human performance engineering and hand therapy is discussed and assessment methods are proposed. Two precision grips were examined in the study: nippers pinch and tip pinch. We have built a grip-measuring device assessing the endpoint forces of two-oppositional grips. The instrument developed is based on a robotic force-wrist sensor and designed to suit human fingers. Through the simultaneous use of an optical measuring system and the grip-measuring device, the finger positions and the grip force acting on the object were obtained. A static model of the hand was also developed. A recursive computational method was used to calculate the joint torques of the fingers from the measured coordinates and the endpoint force vector. The estimated joint torque corresponds to the amount of load on the tendon during isometric muscle contraction. The force output of the two grips considered is presented and compared in two healthy individuals. The calculated joint torques for the index finger and thumb are presented and the maximal values of the finger joint torques acquired in the study are shown.

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