[Analysis of kinesthetic sensation: the influence of m. deltoid, m. forearm extensor and flexor on sensory information of reproductive elbow movements].

The effect of muscle vibration during voluntary self-paced elbow movements were studied in normal human subjects. Vibrations (10Hz, 30Hz, 50Hz, 70Hz) were applied to the m. deltoid, m. forearm extensor and flexor: vibration was turned off between movements. During non-visually guided (eyes closed) movements (reproductive movements), an undershoot of the required movement was observed in cases where vibration (30Hz, 50Hz, 70Hz) was applied to the m. forearm extensor and flexor. On the contrary, no effect was observed in cases where vibration (80Hz) was applied to the m. deltoid. These findings suggest that sensory information from the m. forearm extensor and flexor might play a role in reproductive elbow extension and flexion movements.