BACKGROUND: The strength and endurance of the contralateral biceps muscle can serve as a useful comparison for the operative limb following distal biceps repairs, mid-substance repairs, or tenotomy or tenodesis of the long head. There are limited data available on the effect of handedness on biceps strength and endurance. HYPOTHESIS: The dominant upper extremity has greater elbow flexion and supination peak torque and endurance. MATERIALS AND METHODS: Subjects with no history of prior upper extremity injury or limitations completed isokinetic testing of biceps flexion and supination peak torque and endurance on a Biodex machine. A paired student t test was used to compare peak torque and endurance for both supination and flexion for the dominant and nondominant upper extremities. The results were analyzed for the entire group, and for male and female subjects separately as well. RESULTS: A power analysis revealed that 5 subjects were needed to achieve 80% power. Twenty subjects (10 male, 10 female) were tested. No significant difference was detected for peak torque or endurance for supination or flexion between the dominant and nondominant upper extremities. No difference was detected when the group was analyzed as a whole, nor when men and women were analyzed separately. CONCLUSIONS: The dominant and nondominant upper extremities demonstrate similar peak torque and endurance for supination and flexion. The normal contralateral upper extremity can be used as a matched control in the evaluation of post operative biceps isokinetic strength and endurance without adjusting results for handedness. (c) 2010 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.
BACKGROUND: The strength and endurance of the contralateral biceps muscle can serve as a useful comparison for the operative limb following distal biceps repairs, mid-substance repairs, or tenotomy or tenodesis of the long head. There are limited data available on the effect of handedness on biceps strength and endurance. HYPOTHESIS: The dominant upper extremity has greater elbow flexion and supination peak torque and endurance. MATERIALS AND METHODS: Subjects with no history of prior upper extremity injury or limitations completed isokinetic testing of biceps flexion and supination peak torque and endurance on a Biodex machine. A paired student t test was used to compare peak torque and endurance for both supination and flexion for the dominant and nondominant upper extremities. The results were analyzed for the entire group, and for male and female subjects separately as well. RESULTS: A power analysis revealed that 5 subjects were needed to achieve 80% power. Twenty subjects (10 male, 10 female) were tested. No significant difference was detected for peak torque or endurance for supination or flexion between the dominant and nondominant upper extremities. No difference was detected when the group was analyzed as a whole, nor when men and women were analyzed separately. CONCLUSIONS: The dominant and nondominant upper extremities demonstrate similar peak torque and endurance for supination and flexion. The normal contralateral upper extremity can be used as a matched control in the evaluation of post operative biceps isokinetic strength and endurance without adjusting results for handedness. (c) 2010 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.
Authors: Christine L Redmond; Tim Morris; Charissa Otto; Tanisha Zerella; John G Semmler; Taaibos Human; Joideep Phadnis; Gregory I Bain Journal: Int J Sports Phys Ther Date: 2016-12
Authors: José Carlos Garcia Júnior; Carlos Daniel Candido de Castro Filho; Tadeu Fujita de Castro Mello; Rodrigo Antunes de Vasconcelos; José Luís Amim Zabeu; Jesely Pereira Myrrha Garcia Journal: Rev Bras Ortop Date: 2015-11-04
Authors: Nicholas I Kennedy; George Sanchez; Sandeep Mannava; Márcio B Ferrari; Salvatore J Frangiamore; Matthew T Provencher Journal: Arthrosc Tech Date: 2017-09-25