Nerve Function Impairment after Acute Vibration Exposure.

OBJECTIVE This study was to investigate the acute effects of hand-arm vibrations on the nerve functions of the hands, and the impact of the grip force applied to the vibrating tool during exposure. METHODS Grip strength and perception of vibration, touch, and temperature were evaluated using QST before and after vibration exposure in 21 occupationally unexposed individuals. The procedure was performed twice, with a higher grip force being applied during exposure on the second occasion. RESULTS Vibration perception was significantly impaired after both exposures. Grip strength, perception of touch and temperature were only significantly affected after the high grip force exposure. CONCLUSIONS Exposure to hand-arm vibrations has acute effects on hand nerve function that are sensitive to the grip force applied during exposure.