Body height changes from vibration.
A device for measuring body height is reported (SD, 1 mm). The change in body height before and after vibration and quiet sitting respectively was studied in eight men aged 22-44 years who were free of back pain. The vibration frequency was set at 5 Hz and the acceleration at 2 msec-2. Subjects were asked to report for testing within 2 hours after arising from bed. Body height was measured before and immediately after vibration or sitting exposure and the measurements were repeated at different intervals up to 2 hours after the experiment. Results show that exposure to vibration increases the overall creep response in most subjects. There is a great deal of variability in response between subjects, but most of them show a recovery to the average creep response within a 2-hour time interval.
Klingenstierna
U
U
Department of Orthopaedic Surgery I, Sahlgren Hospital, Göteborg, Sweden.
Pope
M H
MH
D000328:Adult; D001827:Body Height; D006801:Humans; D008297:Male; D011187:Posture; D013131:Spine / Q000502:physiology; D014732:Vibration