title: Measurements of the impedance of the hand and arm.
abstract: The mechanical impedance of the hand and arm was studied on ten healthy subjects during exposure to sinusoidal vibration within the frequency range of 2 to 1000 Hz. A special handle for the measurements was constructed. The influence of vibration direction, handle grip, grip force, vibration level, hand-arm posture and sex as well as anthropometric data were studied. The results show that the impedance of the hand-arm mainly depends on the frequency and direction of the vibration stimuli. Higher vibration levels, as well as more firm hand-grips, resulted in higher impedance. Furthermore, the outcome shows that experiments conducted with different hand-arm postures had an active influence on the mechanical impedance. Moreover, the subjects' sex and constitution of the hand and arm affected the impedance to a large extent.
authors: National Institute of Occupational Health, Umeå, Sweden.
authors: L
authors: L
authors: Burström
mesh_terms: D000328:Adult; D000886:Anthropometry; D001132:Arm / Q000502:physiology*; D001696:Biomechanical Phenomena; D005260:Female; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D012016:Reference Values; D015203:Reproducibility of Results; D014732:Vibration