TY - JOUR
T1 - An Analysis of Symmetry of Torque Strength of the Forearm Under Resisted Forearm Rotation in Normal Subjects
AU - Matsuoka, Juli
AU - Berger, Richard A.
AU - Berglund, Lawrence J.
AU - An, Kai Nan
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/5
Y1 - 2006/5
N2 - Purpose: To establish normative pronation and supination torque values in right-handed adults without evidence of upper-extremity dysfunction or impairment in the forearm positions of neutral, pronation, and supination. Methods: Fifty-one normal right-handed participants ages 22 to 45 years were enrolled and tested in this study using a custom device that incorporated a torque cell and a grip system that produced a digital recording of the peak torque during maximal resisted pronation and supination in positions of neutral forearm rotation, 60° pronation, and 60° supination. Results: The greatest peak torque strength for both male and female participants was found during resisted pronation in the supinated position. The peak torque values averaged 11.9 ± 3.7 N·m on the right side and 10.4 ± 3.3 N·m on the left side for men, and 6.0 ± 1.4 N·m on the right side and 5.0 ± 1.2 N·m on the left side for women. The weakest torque strengths were resisted pronation in the pronated position and resisted supination in the supinated position. Conclusions: Torque strength measurements are reliable and should be collected when treating patients with forearm dysfunction. Maximal torque follows the same pattern related to hand dominance as grip strength. Men generate average torque strengths that are approximately twice the magnitude of those generated by women.
AB - Purpose: To establish normative pronation and supination torque values in right-handed adults without evidence of upper-extremity dysfunction or impairment in the forearm positions of neutral, pronation, and supination. Methods: Fifty-one normal right-handed participants ages 22 to 45 years were enrolled and tested in this study using a custom device that incorporated a torque cell and a grip system that produced a digital recording of the peak torque during maximal resisted pronation and supination in positions of neutral forearm rotation, 60° pronation, and 60° supination. Results: The greatest peak torque strength for both male and female participants was found during resisted pronation in the supinated position. The peak torque values averaged 11.9 ± 3.7 N·m on the right side and 10.4 ± 3.3 N·m on the left side for men, and 6.0 ± 1.4 N·m on the right side and 5.0 ± 1.2 N·m on the left side for women. The weakest torque strengths were resisted pronation in the pronated position and resisted supination in the supinated position. Conclusions: Torque strength measurements are reliable and should be collected when treating patients with forearm dysfunction. Maximal torque follows the same pattern related to hand dominance as grip strength. Men generate average torque strengths that are approximately twice the magnitude of those generated by women.
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U2 - 10.1016/j.jhsa.2006.02.019
DO - 10.1016/j.jhsa.2006.02.019
M3 - Article
C2 - 16713846
AN - SCOPUS:33646534687
SN - 0363-5023
VL - 31
SP - 801
EP - 805
JO - Journal of Hand Surgery
JF - Journal of Hand Surgery
IS - 5
ER -