摘要：Extensively unilateral recruitment for daily activities may determine performance asymmetries in favor of the preferred side eliciting functional adaptation. Our study evaluated asymmetries in elbow torque output between preferred and non-preferred limbs. Eighteen subjects performed maximal elbow flexor and extensor isometric contractions at five different elbow joint angles (0°, 30°, 60°, 90°, 120°) and five different angular velocities (60, 120, 180, 240, 300°.s-1) on an isokinetic dynamometer. Higher flexor torque in favor of preferred arm was observed at 90° of flexion (p<0.05), which also corresponded to the highest torque produced (p<0.05). The fact that joint angle influenced torque asymmetries, whereas angular velocity did not, suggest that the observed asymmetry is likely related to preferential recruitment of elbow flexors at a 90º joint angle for daily tasks requiring high levels of force production. Muscle functional adaptation to frequent stimuli at this joint angle in healthy subjects may explain these results.
其他摘要：Extensively unilateral recruitment for daily activities may determine performance asymmetries in favor of the preferred side eliciting functional adaptation. Our study evaluated asymmetries in elbow torque output between preferred and non-preferred limbs. Eighteen subjects performed maximal elbow flexor and extensor isometric contractions at five different elbow joint angles (0°, 30°, 60°, 90°, 120°) and five different angular velocities (60, 120, 180, 240, 300°.s-1) on an isokinetic dynamometer. Higher flexor torque in favor of preferred arm was observed at 90° of flexion (p
关键词：functional lateralization;learning transference;limb preference;motor learning.;Functional lateralization. Transfer of learning. Limb preference. Motor learning.
其他关键词：Functional lateralization. Transfer of learning. Limb preference. Motor learning.
