Artykuły w czasopismach: „Grip strength”

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Horowitz, Beveriy, Robert Tollin i Gary Cassidy. "Grip Strength". Physical & Occupational Therapy In Geriatrics 15, nr 1 (7.10.1997): 53–64. http://dx.doi.org/10.1300/j148v15n01_04.

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Horowitz, Beveriy P., Robert Tollin i Gary Cassidy. "Grip Strength". Physical & Occupational Therapy In Geriatrics 15, nr 1 (styczeń 1997): 53–64. http://dx.doi.org/10.1080/j148v15n01_04.

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Mat Jais, Ita Suzana, Nivedita Vikas Nadkarni, Yee Sien NG, Dennis Chuen Chai Seow i Ting Hway Wong. "Investigating the functional grip strength of elderly fallers in Singapore". Proceedings of Singapore Healthcare 28, nr 4 (19.08.2019): 252–58. http://dx.doi.org/10.1177/2010105819869361.

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Background: Static grip strength has been a reliable method for assessing the functional capacity of the individual and can be a useful marker for identifying elderly people at risk of functional deterioration leading to a fall. However, static grip strength alone may not represent the true maximum strength that an individual could exert in his/her daily life, especially if the task requires simultaneous forces from gripping and a forearm twisting action, which is termed as functional isometric grip strength. Hence, the objectives of this study were to determine the differences in the fallers’ grip strengths at static-neutral grip position and during isometric forearm pronation/supination, as well as the differences between the maximum and sustained isometric grip strengths. Methods: Data were analysed from 31 elderly people (11 males and 20 females) aged 70 and over. Using a custom-made hand strength measurement device, three measurements were taken: (1) grip strength in neutral forearm position; (2) grip strength during isometric forearm pronation; and (3) grip strength during isometric forearm supination. Results: Elderly fallers could only achieve approximately 60%–80% of the maximum normative strength. Additionally, it was found that their functional isometric grip strengths were generally weaker than their static maximal grip strength, especially during isometric supination as either maximum or sustained isometric supination grip strengths (Dominant hand: 10.6 kg and 8.5 kg, respectively (males); 6.0 kg and 4.4 kg, respectively (females)). Conclusion: Elderly fallers are weaker when their grip is subjected to additional torque, endurance or both. Hence, these findings have potential implications for designing better screening tools for the geriatric population.

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Davis, Mikaila L., Jordan M. Glenn, Rodger Stewart, Carly Arnold, Landon Lavene, Aaron Martinez, Lauren Wethington, Michelle Gray i Michelle Gray. "Hand-grip Strength". Medicine & Science in Sports & Exercise 47 (maj 2015): 882–83. http://dx.doi.org/10.1249/01.mss.0000479128.26644.27.

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Waldo, Brain R. "Grip Strength Testing". STRENGTH AND CONDITIONING JOURNAL 18, nr 5 (1996): 32. http://dx.doi.org/10.1519/1073-6840(1996)018<0032:gst>2.3.co;2.

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Bohannon, Richard W., Jane Bear-Lehman, Johanne Desrosiers, Nicola Massy-Westropp i Virgil Mathiowetz. "Average Grip Strength". Journal of Geriatric Physical Therapy 30, nr 1 (kwiecień 2007): 28–30. http://dx.doi.org/10.1519/00139143-200704000-00006.

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Pazderka, M. Peggy, Melissa Henderson i 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, nr 13 (październik 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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JOSTY, I. C., M. P. H. TYLER, P. C. SHEWELL i A. H. N. ROBERTS. "Grip and Pinch Strength Variations in Different Types of Workers". Journal of Hand Surgery 22, nr 2 (kwiecień 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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Yu, Ruby, Sherlin Ong, Osbert Cheung, Jason Leung i Jean Woo. "Reference Values of Grip Strength, Prevalence of Low Grip Strength, and Factors Affecting Grip Strength Values in Chinese Adults". Journal of the American Medical Directors Association 18, nr 6 (czerwiec 2017): 551.e9–551.e16. http://dx.doi.org/10.1016/j.jamda.2017.03.006.

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Holland, Sara, James Dickey, Louis Ferreira i 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, nr 3 (16.06.2020): 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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Kramer, Alan M., i Duane V. Knudson. "Grip Strength and Fatigue in Junior College Tennis Players". Perceptual and Motor Skills 75, nr 2 (październik 1992): 363–66. http://dx.doi.org/10.2466/pms.1992.75.2.363.

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Change in grip strength over 30 trials was documented in two samples of junior college tennis players to assess possible fatigue. Eight men and eight women performed 30 maximum-grip strength tests with 25-sec. rests between trials. Significant positive correlations (.38 and .53 for men and women) were observed between grip strength and trials. In practical terms, grip strength did not change over 30 trials in these tennis players. The data suggested that the repetitive gripping patterns used by these players in tennis play resulted in consistent maximum-grip strengths across 30 trials.

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Kotecha, Mansi Milanbhai, i 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, nr 11 (8.11.2022): 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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Akınoğlu, Bihter, Tuğba Kocahan, Necmiye Ün Yıldırım, Çağlar Soylu i Adnan Hasanoğlu. "Determination of the relationship between the wrist isokinetic muscle strenght and the grip strength in tennis players aged between 12-14". Orthopaedic Journal of Sports Medicine 5, nr 2_suppl2 (1.02.2017): 2325967117S0007. http://dx.doi.org/10.1177/2325967117s00070.

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Aim: The purpose of this study is to determine the relationship between isokinetic wrist muscle strenght and grip strength in tennis players aged between 12-14. Methods: This study was carried out with the participation of 9 (3 female and 6 male) tennis players aged between 12-14 (means 13,22±0,83). Weight, height, body mass index and dominant extremity of the players were recorded. İsokinetic measurement was performed with Isomed 2000® device. İsokinetic testing protocol; before the test all players performed the wrist flexion and extension isokinetic test with the 5 repeating at 90 º/sec as a warm-up and for comprehenting the test. Then, wrist flexion and extension concentric-concentric strength measurements were performed with the 5 repeating at 60 º/sec and with the 15 repeating at 240 º/sec with the angle between 50 degrees of wrist flexion and 60 degrees of wrist extension and peak torque values were recorded. Standard Jamar® Dynamometer was used for grip strength measurements. Grip strenght was performed firstly in sitting position, which is the position of standard measurement. Secondly, in standing position, the elbow was in full ekstansion and the forearm was in neutral position. Thirdly, in standing position the wrist was positioned approximately 30° extension and 10° ulnar deviation. This test was repeated 3 times in all test position and the mean of three scores were recorded. Firstly, the dominant hand, then the non-dominant hand was evoluated. They were allowed to rest for 30 seconds between each grip measurement. Correlation between peak tork of isokinetic muscle strenght and grip strength was done having been used Spearman correlation test. Findings: It was determined that there was a significant positive relation between wrist flexion-extension isokinetic muscle strength and grip strenght in tennis players aged between 12-14. Clinically, grip strength measured in the standard sitting position was found more as compared to the other positions but these values were not statistically significant (p>0,05). Accordingly, grip strength measured in the standard sitting position correlated with much more of the parameters which we evaluated for isokinetic muscle strength comparing to grip strenght measured in the other two positions (p<0,05). Results: It was concluded that isokinetic muscle strength of wrist can be affected by grip strength, therefore measurement needs to be done in the sitting position which maximum grip strength may reveal. [Table: see text]

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De Smet, Luc, i Annick Vercammen. "Grip Strength in Children". Journal of Pediatric Orthopaedics B 10, nr 4 (październik 2001): 352–54. http://dx.doi.org/10.1097/01202412-200110000-00017.

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Conrad, Megan O., i Richard W. Marklin. "Motorcycle Clutch Grip Strength". Proceedings of the Human Factors and Ergonomics Society Annual Meeting 58, nr 1 (wrzesień 2014): 1305–9. http://dx.doi.org/10.1177/1541931214581272.

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De Smet, Luc, i Annick Vercammen. "Grip Strength in Children". Journal of Pediatric Orthopaedics B 10, nr 4 (październik 2001): 352–54. http://dx.doi.org/10.1097/01202412-200110040-00017.

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Hamilton, Ann, Ron Balnave i Roger Adams. "Grip Strength Testing Reliability". Journal of Hand Therapy 7, nr 3 (lipiec 1994): 163–70. http://dx.doi.org/10.1016/s0894-1130(12)80058-5.

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De Smet, Luc, i Annick Vercammen. "Grip Strength in Children". Journal of Pediatric Orthopaedics, Part B 10, nr 4 (październik 2001): 352–54. http://dx.doi.org/10.1097/00009957-200110000-00017.

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Bohannon, Richard W. "Grip strength predicts outcome". Age and Ageing 35, nr 3 (2.03.2006): 320. http://dx.doi.org/10.1093/ageing/afj061.

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Ellis, Malcolm. "Measurement of grip strength". Clinical Biomechanics 7, nr 3 (sierpień 1992): 187–88. http://dx.doi.org/10.1016/0268-0033(92)90038-6.

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Cutts, Alison. "Measurement of grip strength". Clinical Biomechanics 7, nr 3 (sierpień 1992): 188. http://dx.doi.org/10.1016/0268-0033(92)90039-7.

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Cha, Soo Min, Hyun Dae Shin, Kyung Cheon Kim i Jung Woo Park. "Comparison of Grip Strength Among 6 Grip Methods". Journal of Hand Surgery 39, nr 11 (listopad 2014): 2277–84. http://dx.doi.org/10.1016/j.jhsa.2014.06.121.

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Miller, Glenn D., i Andris Freivalds. "Gender and Handedness in Grip Strength — A Double Whammy for Females". Proceedings of the Human Factors Society Annual Meeting 31, nr 8 (wrzesień 1987): 906–10. http://dx.doi.org/10.1177/154193128703100813.

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With increasing number of women entering into jobs traditionally held by men, it has been found that tools and equipment originally deisgned for the “average man” do not fit women, smaller mean or other persons. Thirty college students (7 females, 8 dominant left handed males and 8 dominant right handed males) squeezed alternately with both dominant and non-dominant hands twice a Lafayette dynamometer at 5 grip span settings. The results indicated that grip strength increased with increasing grip span up to the preferred grip span. Female grip strength was 53% of male grip strength. The non-dominant hand produced 89.6% of dominant hand grip strength. More interestingly both male and female left handers exihibited nearly identical grip strengths for both hands, leading one to suspect that left handed people are being forced to adapt to a right handed world. It thus appears that certain female workers may be at a double disadvantage with gender and left handedness reducing grip strength by 2/3. However, tools and equipment can be modified to accommodate weaker individuals.

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Sadeghifar, A. R., A. Karbalaeikhani i A. R. Saied. "An assessment of the effects of variations in the Palmaris longus tendon and the fifth superficial flexor digitorum on pinch and grip strength". Journal of Back and Musculoskeletal Rehabilitation 33, nr 5 (17.09.2020): 743–47. http://dx.doi.org/10.3233/bmr-170916.

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INTRODUCTION: The effect of the absence or presence of the Palmaris longus tendon on pinch and grip strength was investigated in this study. Similarly, the effect of the presence or absence of the fifth superficial flexor digitorum on grip strength in the hand was studied. The aim of the present study was to assess the combined effect of these anatomical variations on pinch and grip strength. MATERIALS AND METHODS: In this cross-sectional study, 523 volunteers and their 1046 hands were enrolled. Each hand was assessed for the presence or absence of the Palmaris longus tendon and for variations in the fifth superficial flexor digitorum function. Then the grip and pinch power of the hands were measured with the Jammar Dynamometer. RESULTS: The presence or absence of Palmaris longus had no effect on grip strength in the individuals studied. Likewise, variations in fifth superficial flexor digitorum function had no effect on grip and pinch strengths. But the results of statistical testing showed the effect of the presence of Palmaris longus on pinch strength (25.38 lbs in hands with Palmaris present vs 24.43 lbs in hands without Palmaris). Pinch and grip power was higher in men than in women and in the right hand than in the left. CONCLUSION: Based on the findings of the present study, it seems that absence of the Palmaris longus tendon is associated with a reduction in pinch strength but has no effect on grip strength, and the variations in the fifth superficial flexor digitorum (flexor digitorum superficialis, or FDS) have no effect on pinch and grip strengths.

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Haralson, Robert, i Christopher R. Brigham. "Impairment Tutorial: Evaluating Impairment Due to Other Disorders of the Upper Extremity". Guides Newsletter 4, nr 3 (1.05.1999): 8–9. http://dx.doi.org/10.1001/amaguidesnewsletters.1999.mayjun05.

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Abstract Because grip and pinch strength are highly correlated and most literature deals with the former, this article focuses on grip strength, which is controversial because, as a functional test, it can be influenced by subjective factors that are difficult to control and include effort, pain, time of day, and fatigue. The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides) identifies additional factors that influence grip and include sex, age, sensation, comorbidities, age, nutritional status, and, perhaps, handedness. Although grip strength is considered a measure of hand function, its correlation with activities of daily living is poor. Grip strength measurements must be performed in a standard manner because altering wrist, forearm, or elbow position can change the results. Impaired hand strength is compared to that of the opposite extremity, which usually is normal; if both extremities are involved, the strength measurements are compared to the average normal strengths. The AMA Guides specifies that grip measurements are regarded as reliable if there is less than 20% variation in the readings, but subjective factors may result in higher-than-normal variance between measurements of grip. Because pain interferes with maximal effort and, if present, may invalidate grip strength measurement, the latter generally is inappropriate to rate tendonitis or other painful conditions. Generally, grip strength is not used to rate neurological deficits.

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Montazer, M. Ali, i John G. Thomas. "Grip Strength as a Function of 200 Repetitive Trials". Perceptual and Motor Skills 75, nr 3_suppl (grudzień 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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Kotecha, M., i M. Desai. "Normative values of hand grip strength and pinch grip strength in healthy children#". Indian Journal of Health Sciences and Care 9, nr 1 (2022): 37–40. http://dx.doi.org/10.5958/2394-2800.2022.00008.6.

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Stock, R., T. Askim, G. Thrane, A. Anke i P. J. Mork. "Grip strength after stroke: Rate of force development and sustained maximal grip strength". Annals of Physical and Rehabilitation Medicine 61 (lipiec 2018): e352-e353. http://dx.doi.org/10.1016/j.rehab.2018.05.823.

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Bertrand, Anne Martine, Katia Fournier, Marie-Gabrielle Wick Brasey, Marie-Laure Kaiser, Rolf Frischknecht i Karin Diserens. "Reliability of maximal grip strength measurements and grip strength recovery following a stroke". Journal of Hand Therapy 28, nr 4 (październik 2015): 356–63. http://dx.doi.org/10.1016/j.jht.2015.04.004.

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Savva, C., C. Karagiannis i A. Rushton. "Test–retest reliability of grip strength measurement in full elbow extension to evaluate maximum grip strength". Journal of Hand Surgery (European Volume) 38, nr 2 (19.06.2012): 183–86. http://dx.doi.org/10.1177/1753193412449804.

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The objective of this study was to investigate the test–retest reliability of measurement of grip strength in full elbow extension. The grip strengths of 19 healthy participants were measured using the Jamar dynamometer by the same rater on two occasions with an interval of 7 days between measures. Test–retest reliability of grip strength measurement was excellent in full elbow extension and associated with low values of standard error of measurement and small variations in the differences between the two measurements in both testing sessions.

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Stevenson, Peter E., Todd R. Skochdopole, L. Cassady, Dennis Pihs i Ajit D. Kelkar. "Testing of High Strength Fabrics: Reporting Modulus, Low Strain Properties, and Ultimate Tensile Strength". Journal of Industrial Textiles 29, nr 4 (kwiecień 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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LEACH, W. J., C. ESLER i T. D. SCOTT. "Grip Strength following Carpal Tunnel Decompression". Journal of Hand Surgery 18, nr 6 (grudzień 1993): 750–52. http://dx.doi.org/10.1016/0266-7681(93)90237-a.

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To monitor the effect of open carpal tunnel decompression on grip strength in the hand, a prospective study was made of 25 patients undergoing a total of 31 operations. Hand grip, key pinch and pulp-to-pulp pinch strengths were measured pre-operatively and at regular intervals until 1 year following operation. At that time there was no significant difference in the hand grip and pulp-to-pulp pinch strengths compared to their pre-operative values, but the key pinch in females showed a marginally significant reduction ( P=0.04) compared to the pre-operative value.

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Shivers, Carrie L., Gary A. Mirka i David B. Kaber. "Effect of Grip Span on Lateral Pinch Grip Strength". Human Factors: The Journal of the Human Factors and Ergonomics Society 44, nr 4 (grudzień 2002): 569–77. http://dx.doi.org/10.1518/0018720024496999.

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Gilbertson, Louise, i 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, nr 12 (grudzień 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 i Gaj Vidmar. "Effect of custom-made and prefabricated orthoses on grip strength in persons with carpal tunnel syndrome". Prosthetics and Orthotics International 38, nr 3 (24.06.2013): 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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Kozakai, Rumi. "Grip strength and healthy aging". Journal of Physical Fitness and Sports Medicine 6, nr 3 (2017): 145–49. http://dx.doi.org/10.7600/jpfsm.6.145.

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Dunwoody, Lynn, Heinz G. Tittmar i Winston S. McClean. "Grip Strength and Intertrial Rest". Perceptual and Motor Skills 83, nr 1 (sierpień 1996): 275–78. http://dx.doi.org/10.2466/pms.1996.83.1.275.

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This experiment illustrates that the 1991 Montazer and Thomas conclusion that grip strength declines over time is incomplete. 15 men performed 4 grip-strength trials with imertrial rests of 120 sec. Analysis showed that performance did not decrease over the 4 trials, on the contrary, the pattern was that of a learning curve, with a significant difference across the 4 trials, i.e., on Trial 1 grip strength was lower than on successive trials. Such a result points to the importance of ‘warming-up’ the muscle to obtain optimum functioning. Also, subjects should be familiar with the task and the equipment to reduce the chance of a Type I error. Implications for research are discussed.

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Erinç, S., E. Uygur, M. Akkaya i F. Akpınar. "Metacarpal squeezing reduces grip strength". Hand Surgery and Rehabilitation 41, nr 1 (luty 2022): 37–41. http://dx.doi.org/10.1016/j.hansur.2021.09.005.

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Wyn Lim, Edwin Choon. "Pain Free Grip Strength test". Journal of Physiotherapy 59, nr 1 (marzec 2013): 59. http://dx.doi.org/10.1016/s1836-9553(13)70152-8.

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Richards, Lorie G. "Posture effects on grip strength". Archives of Physical Medicine and Rehabilitation 78, nr 10 (październik 1997): 1154–56. http://dx.doi.org/10.1016/s0003-9993(97)90143-x.

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Maurissen, Jacques P. J., Brian R. Marable, Amanda K. Andrus i Kenneth E. Stebbins. "Factors affecting grip strength testing". Neurotoxicology and Teratology 25, nr 5 (wrzesień 2003): 543–53. http://dx.doi.org/10.1016/s0892-0362(03)00073-4.

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Özkan, Sezai, Femke M. A. P. Claessen, Kyle R. Eberlin, Sang-Gil P. Lee, David C. Ring i Ana-Maria Vranceanu. "The Effect of Priming With Questionnaire Content on Grip Strength in Patients With Hand and Upper Extremity Illness". HAND 12, nr 5 (20.12.2016): 484–89. http://dx.doi.org/10.1177/1558944716681975.

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Background: Grip strength is a performance-based measure of upper extremity function that might be influenced by priming (the influence of a response to a stimulus by exposure to another stimulus). This study addressed the influence of questionnaire content on performance measurements such as grip strength between patients who complete the standard Pain Catastrophizing Scale (PCS) compared with patients who complete a positively adjusted PCS. Methods: Between June 2015 and August 2015, we enrolled 122 patients who presented to 3 hand surgeons at 3 outpatient offices. They were randomized to 2 groups: the control group, which completed the PCS, and the intervention group, which completed a positively phrased version of the PCS. Before and after completion of the questionnaire, we measured each patient’s grip strength 3 times by alternating between hands. Two patients were excluded after participation. We calculated both the preintervention and postintervention mean and maximum grip strengths. Results: There was no significant difference between groups on mean or maximum grip strength before completion of the questionnaires. There was a greater improvement in mean grip strength of both hands in the intervention group compared with the PCS group. This improvement was statistically significant in the affected hand. The maximum grip strength showed a statistically significant greater improvement in both hands in the positive PCS group compared with the control group. Conclusions: Positive priming through a questionnaire leads to an increase in mean and maximum grip strength when compared with the standard questionnaire that uses negative terms rather than positive.

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Zafar, Hamayun, Ahmad Alghadir i Shahnawaz Anwer. "Effects of Head-Neck Positions on the Hand Grip Strength in Healthy Young Adults: A Cross-Sectional Study". BioMed Research International 2018 (25.07.2018): 1–5. http://dx.doi.org/10.1155/2018/7384928.

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Background.Assessment of hand grip strength is vital for the evaluation of upper limb impairments and effective exercise prescription. Present study primarily aimed to investigate the effect of head-neck positions on the hand grip strength in healthy young adults. Secondarily, the present study compared hand grip strength between left versus right hand in different head-neck positions.Methods.Healthy young adults (age 19 – 30 year; n = 40) participated in this cross-sectional study. Hand grip strength was assessed in three head-neck positions (neutral, rotation left, and rotation right) using the standard adjustable Jamar hand dynamometer.Results. Hand grip strength in both sides (left and right) was greatest in the head-neck neutral position. Hand grip strength measured in head-neck left rotation position displayed the least strength in both sides. There was no significant difference noted between left and right side hand grip strength measured in head-neck neutral and right rotation positions. However, there was a significant difference noted between left and right side hand grip strength measured in head-neck left rotation positions. There was no significant effect of head-neck positions on hand grip strength noted in both sides.Conclusions. Hand grip strength was highest in the head-neck neutral position followed by head-neck rotation to the right. However, head-neck positions did not significantly affect hand grip strength in healthy young adults. Further studies assessing the hand grip strength in different neck positions in patients with neck pain and upper limb dysfunction may have significant implications for the assessment of hand grip strength.

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Loprinzi, Paul D., i Jeremy P. Loenneke. "Evidence of a Link Between Grip Strength and Type 2 Diabetes Prevalence and Severity Among a National Sample of U.S. Adults". Journal of Physical Activity and Health 13, nr 5 (maj 2016): 558–61. http://dx.doi.org/10.1123/jpah.2015-0241.

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Objective:Examine the association between grip strength and type 2 diabetes prevalence and severity.Methods:Using data from NHANES 2011–2012, objectively-determined hand grip strength was assessed using the Takei digital grip strength dynamometer, with diabetes assessed via physician diagnosis and glycohemoglobin A1C.Results:A 5 kg greater grip strength was associated with a 14% lower odds of having diabetes for men (ORadjusted = 0.86; 95% CI: 0.79 to 0.94; P = .002). Similarly, for women, a 5 kg greater grip strength was associated with an 18% lower odds of having diabetes (ORadjusted = 0.82; 95% CI: 0.69 to 0.97; P = .03). Grip strength was also associated with glycohemoglobin A1C among women with diabetes (βadjusted = –0.26, 95% CI: –0.39 to –0.12; P = .001), which suggests that grip strength is associated with diabetes severity among women.Conclusions:For both men and women, grip strength is associated with type 2 diabetes presence, and among women, grip strength is associated with severity of type 2 diabetes.

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Montazer, M. Ali, i John G. Thomas. "Grip Strength as a Function of Repetitive Trials". Perceptual and Motor Skills 73, nr 3 (grudzień 1991): 804–6. http://dx.doi.org/10.2466/pms.1991.73.3.804.

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An experiment on repetitive hand-gripping tasks was conducted to determine the functional relationship between the maximum grip strength and number of trials. Nine male subjects performed 30 gripping trials at their maximum strengths with 15-sec. rests between trials. Performance dropped significantly after two trials. Over-all, there was a 30% drop in maximum grip strength after 30 trials. The decrease in strength over trials is described by a logarithmic function.

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Lim, Seong Hoon, Yeo Hyung Kim i Jung Soo Lee. "Normative Data on Grip Strength in a Population-Based Study with Adjusting Confounding Factors: Sixth Korea National Health and Nutrition Examination Survey (2014–2015)". International Journal of Environmental Research and Public Health 16, nr 12 (25.06.2019): 2235. http://dx.doi.org/10.3390/ijerph16122235.

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Background: We investigated population-based data on grip strength, analyzed for demographic factors, and proposed a formula to estimate grip strength that could be generalized to a population with different anthropometric and background characteristics. Methods: This study used a complex, stratified, multistage probability cluster survey with a representative sample of the population. Select household Korean participants (n = 6577) over age 10 who were able to perform daily tasks without issue were included. Grip strength was measured in both hands, alternately, three times using a digital grip strength dynamometer. Results: There was a curvilinear relationship between grip strength and age, and grip strength was higher in males than females (p = 0.001). Hand preference significantly affected grip strength (p = 0.001). Weight and height were positively correlated with strength in both hands (p = 0.001), but waist circumference was negatively correlated with strength in both hands (p = 0.001). The intensity of occupational labor did significantly affect grip strength in both hands (p = 0.001). The formulas for estimating grip strength of each hand are presented as main results. Conclusions: To determine normative data on grip strength, we may consider factors such as occupations with different physical demands, underlying medical conditions, anthropometric characteristics, and unmodifiable factors such as age and sex.

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Prasitsiriphon, Orawan, i Wiraporn Pothisiri. "Associations of Grip Strength and Change in Grip Strength With All-Cause and Cardiovascular Mortality in a European Older Population". Clinical Medicine Insights: Cardiology 12 (1.01.2018): 117954681877189. http://dx.doi.org/10.1177/1179546818771894.

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Objective: (1) To examine the associations between 3 measures of grip strength: static grip strength, change in grip strength, and the combination of grip strength and its change, with all-cause and cardiovascular mortality, and (2) to determine which measure is the most powerful predictor of all-cause and cardiovascular mortality among the European older population. Method: Data come from the first 4 waves of the Survey of Health, Ageing and Retirement in Europe (SHARE). A Cox proportional hazard model and a competing risk regression model were used to assess the associations. To determine the best predictor, Akaike information criterion was applied. Results: Grip strength and the combination of grip strength and its change were associated with all-cause and cardiovascular mortality. Change in grip strength was correlated with only all-cause mortality. Among the 3 measures, the static measure of grip strength was the best predictor of cardiovascular mortality whereas the combined measure is that of all-cause mortality. Discussion: Grip strength is a significant indicator of all-cause and cardiovascular mortality. The combination of grip strength and its change can be used to increase the accuracy for prediction of all-cause mortality among older persons.

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Scharff, Miranda, Chantal Maria Wiepjes, Maartje Klaver, Thomas Schreiner, Guy T’Sjoen i Martin den Heijer. "Change in grip strength in trans people and its association with lean body mass and bone density". Endocrine Connections 8, nr 7 (lipiec 2019): 1020–28. http://dx.doi.org/10.1530/ec-19-0196.

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Objective Gender-affirming hormonal treatment (HT) in trans people changes physical appearance. Muscle mass and strength are important aspects of physical appearance, but few data exist on the effect of HT on grip strength and muscle mass. This study aimed to investigate the change in grip strength in trans people during the first year of HT and to study the possible determinants of this change and the associations between changes in grip strength, lean body mass and bone mineral density (BMD). Design and methods A multicenter, prospective study was performed, including 249 transwomen and 278 transmen. Grip strength, lean body mass and BMD were measured at baseline and after 1 year. Results After 1 year of HT, grip strength decreased with −1.8 kg (95% CI −2.6; −1.0) in transwomen and increased with +6.1 kg (95% CI +5.5; +6.7) in transmen. No differences in grip strength change was found between age groups, BMI groups, hormonal administration routes or hormone concentrations. In transmen, increase in grip strength was associated with increase in lean body mass (per kg increase in grip strength: +0.010 kg, 95% CI +0.003; +0.017), while this was not found in transwomen (per kg increase in grip strength: +0.004 kg, 95% CI −0.000; +0.009). Change in grip strength was not associated with change in BMD in transwomen and transmen. Conclusions After 1 year of HT, grip strength decreased in transwomen, and increased in transmen. In transmen only, change in grip strength was associated with change in lean body mass.

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Desai, Roopa, Rucha Choudhary i Priyanka Dogra. "A Comparative Study of Grip Strength in Three Different Activities of Daily Living Positions in Geriatric Population". International Journal of Health Sciences and Research 12, nr 4 (19.04.2022): 269–75. http://dx.doi.org/10.52403/ijhsr.20220431.

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Background & Aim: Geriatric population need to have their grip strength while doing Activities of Daily Living (ADL) in order to reduce the risk of falls. Hence, the aim of this study was to assess grip strength of both hands using three different positions according to ADL as well as to find the correlation between age and Grip Strength in geriatric population. Methods: Forty participants between the age group of 60 to 80 years were evaluated for grip strength using Jamar hand dynamometer in 3 different ADL positions. The average of the three readings were taken for each hand for comparison. Results: Subjects showed greater grip strength in Dominant hand. In position 1, subjects with age group between 60-69 years showed highest mean grip, whereas in age group between 70-80 years highest mean grip was seen in position 3. Also, this study also showed a negative correlation of age & grip strength in both the hands. Conclusion: This study affirms that different joint positions have an effect on grip strength especially elbow & shoulder joint with respect to wrist positions. In conclusion, all three positions can be used to measure grip strength because they affect ADLs. Key words: falls, geriatric population, grip strength, Jamar Dynamometer.

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FRANSSON, CHARLOTTE, i JØRGEN WINKEL. "Hand strength: the influence of grip span and grip type". Ergonomics 34, nr 7 (lipiec 1991): 881–92. http://dx.doi.org/10.1080/00140139108964832.

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