Ctr. for Res. on Gerontology and Geriatrics, Univ. of Sherbrooke, 1036, Belvedere South, Sherbrooke, PQ J1H 4C4, Canada
A. J. Brammer
J. E. Piercy
Natl. Res. Council, Ottawa, Canada
Mechanoreceptor-specific vibrotactile thresholds have been determined at the fingertip of the third finger (both hands) of manual workers using the tactometer. Age-related changes in thresholds were examined in 82 hands exposed to vibration, which were classified according to the Stockholm Workshop Stages of the hand-arm vibration syndrome (HAVS), and 38 unexposed hands. The age of subjects ranged from 19 to 54 years, and the exposure to vibration ranged from 2 to 27 years. Thresholds from asymptomatic, unexposed persons were employed to separate the influence of aging from that due to vibration exposure. A preliminary analysis of the data suggests that age does not influence the development of either the sensorineural symptoms or vascular signs of HAVS, a finding of consequence to the management of workers' activities in the workplace.