The aim of this study is to establish an approach to the reference pattern of biomechanics and fatigue response of the biceps brachii, A biomechanical study was performed in 37 healthy male subjects. Maximum voluntary contraction of the flexion of the elbow before fatiguing was 266.8 ± 58,7N in the dominant arm and 258.2 ± 59,4N in the nondominant. It decreased until 211.5 ± 53N and 205.3 ± 56,5N respectively after the fatigue test (p <0.001 for both). Time until exhaustion was observed at 160.7 ± 72.8 s in the dominant arm and 156.7 ± 68,7s in the nondominant. Maximum voluntary supination decreased from 208.7 ± 54N and 207 ± 54,8N in the nondominant before the fatigue test; MVS decreased until 194.1 ± 66,6N and 192.8 ± 66N respectively after the fatigue test (p <0.001 for both). No significant differences in the biomechanical study between age subgroups were observed.

The aim of this study is to establish an approach to the reference pattern of biomechanics and fatigue response of the biceps brachii, A biomechanical study was performed in 37 healthy male subjects. Maximum voluntary contraction of the flexion of the elbow before fatiguing was 266.8 ± 58,7N in the dominant arm and 258.2 ± 59,4N in the nondominant. It decreased until 211.5 ± 53N and 205.3 ± 56,5N respectively after the fatigue test (p <0.001 for both). Time until exhaustion was observed at 160.7 ± 72.8 s in the dominant arm and 156.7 ± 68,7s in the nondominant. Maximum voluntary supination decreased from 208.7 ± 54N and 207 ± 54,8N in the nondominant before the fatigue test; MVS decreased until 194.1 ± 66,6N and 192.8 ± 66N respectively after the fatigue test (p <0.001 for both). No significant differences in the biomechanical study between age subgroups were observed.