Hand-Arm Vibration—An Engineering Approach

Reynolds, Douglas D.; Jokel, Charles

doi:10.1080/0002889748507081

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…The absorption of energy will stimulate an increase in the flow of blood into the area and can result in a tingling and burning sensation, according to . Most of the tissues in the hand are, however, highly elastic and can therefore absorb large amounts of energy before fatiguing and ultimately being damaged (Reynolds & Jokel 1974). If the motions of the tissues are out of phase, the relative motion between different tissues can be larger than the individual motions of each tissue.…”

Section: Discussionmentioning

confidence: 99%

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Absorption of vibration energy in the human hand and arm

1994

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A possible basis for the risk assessment for hand-transmitted vibration may be to determine the amount of energy absorbed in the human hand and arm. In the present study, the mechanical energy absorption in the hand-arm system was measured within the frequency range of 4 to 1000 Hz. The study was carried out on ten healthy subjects during exposure to sinusoidal vibration. The influence of various experimental conditions, such as vibration direction (Xh, Yh, Zh), grip force (25-75 N), vibration level (8-45 mm/srms), and hand-arm posture were studied. The outcome shows that the energy absorption in the human hand and arm depended mainly on the frequency and direction of the vibration stimulus. Higher vibration levels, as well as firmer handgrips, resulted in higher absorption of energy. Varying hand-arm postures had only a small influence on the amount of absorbed energy, while the constitution of the hand and arm affected the energy absorption to a larger extent.

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Section: Discussionmentioning

confidence: 99%

“…Potential energy is stored as a result of the relative compression or extension of tissues. Kinetic energy results from the motion of the tissues in the hand and arm (Miwa 1967a, b, c, Miwa 1968a, b, c, d, Reynolds 1977, Reynolds & Jokel 1974. In an ideal system, i.e.…”

Section: The Risk Assessmentmentioning

confidence: 99%

Absorption of vibration energy in the human hand and arm

1994

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“…The threshold contours are in good agreement with thresholds determined in previous studies with the same contact conditions and measurement methods (Morioka and Griffin, 1999;2000). contact conditions employed (Reynolds and Jokel, 1974;Mishoe and Suggs;Sörensson and Burström, 1997). Possibly, vibration at 31.5 Hz was amplified by a resonance of the hand and arm in the HAND contact condition, resulting in a lowering of all thresholds at this frequency.…”

Section: Discussionmentioning

confidence: 99%

Independent responses of Pacinian and Non-Pacinian systems with hand-transmitted vibration detected from masked thresholds

Morioka

Griffin

2005

Somatosensory & Motor Research

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“…Numerous hypotheses have been proposed for the physiologial mechanism of the genesis of vibration disease, but there has not yet been any generally accepted explanation for vasospastic symptoms (2,11). The variety of hygienic regulation in different countries shows that the correct theory is still to be determined (9). In 1973 Hyvarinen et al (3) suggested that vasospastic symptoms were due to a sympathetic vasoconstrictor reflex triggered by vibration.…”

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confidence: 99%