This study verified the eccentric torque-velocity relationship of human elbow flexors by considering muscle damage induced in maximal eccentric torque measurements. Twenty subjects (26.4 ± 6.2 yrs) were tested twice, separated by 7 days, for maximal voluntary isometric torque at 90° (1.57 rad) of elbow flexion (ISO) and isokinetic eccentric torque (ECC) at velocities of 30°·s
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followed by 90°, 150°, 210°·s
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, and a repeated 30°·s
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using a range of movement from 60° to 140° (180°: full extension). ISO preceded each ECC measure to assess the effects of muscle damage and/or fatigue on the measures. The difference in ECC at 30°·s
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between the first and second attempts was used to adjust the torque values. The reliability of the measurements was supported by high intra-class correlation coefficient(0.96–0.99) and low coefficient of variation (6.3–9.1%). Peak ECC at all velocities were significantly (p < 0.05) greater than ISO(14–16%), but no significant differences were evident among velocities. The second ECC at 30°·s
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was significantly (p< 0.05) lower (∼10%). than the first, and ISO decreased significantly (p< 0.05) over the measurements (∼10%). Following adjustment, no significant differences in ECC torque among velocities were still evident. It is concluded that eccentric torque is approximately 15% higher than isometric torque without influence of angular velocity for the elbow flexors.
