Effects of temperature on reductions in finger blood flow induced by vibration

Yao, Yuqi; Griffin, Michael J.

doi:10.1007/s00420-010-0560-0

Cited by 13 publications

(29 citation statements)

References 32 publications

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“…Large inter-subject variability has been observed in the vasoconstriction caused by vibration, with reductions in finger blood flow differing by as much as 50% (Ye and Griffin, 2011b). This may be partly explained by the correlation between perception thresholds mediated by the Pacinian channel and the vibration-induced vasoconstriction: finger blood flow is less affected by vibration in subjects with higher thresholds at 125-Hz Griffin, 2011a, 2013).…”

Section: Introductionmentioning

confidence: 99%

Relation between vibrotactile perception thresholds and reductions in finger blood flow induced by vibration of the hand at frequencies in the range 8–250 Hz

Yao

Griffin

2014

Eur J Appl Physiol

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Section: Introductionmentioning

confidence: 99%

Relation between vibrotactile perception thresholds and reductions in finger blood flow induced by vibration of the hand at frequencies in the range 8–250 Hz

Yao

Griffin

2014

Eur J Appl Physiol

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“…The thermometer was located close to the heads of subjects. Room temperature and skin temperature were controlled and monitored to minimize the effect of temperature on FBF and vibrotactile thresholds (2,41).…”

Section: Methodsmentioning

confidence: 99%

“…Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds. J Appl Physiol 111: 1606 -1613, 2011. First published September 15, 2011 doi:10.1152/japplphysiol.00407.2011.-Vibration of one hand reduces blood flow in the exposed hand and in the contralateral hand not exposed to vibration, but the mechanisms involved are not understood.…”

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Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds

Yao

Griffin

2011

Journal of Applied Physiology

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Ye Y, Griffin MJ. Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds. J Appl Physiol 111: 1606 -1613, 2011. First published September 15, 2011 doi:10.1152/japplphysiol.00407.2011.-Vibration of one hand reduces blood flow in the exposed hand and in the contralateral hand not exposed to vibration, but the mechanisms involved are not understood. This study investigated whether vibration-induced reductions in finger blood flow are associated with vibrotactile perception thresholds mediated by the Pacinian channel and considered sex differences in both vibration thresholds and vibration-induced changes in digital circulation. With force and vibration applied to the thenar eminence of the right hand, finger blood flow and finger skin temperature were measured in the middle fingers of both hands at 30-s intervals during seven successive 4-min periods: 1) pre-exposure with no force or vibration, 2) pre-exposure with force, 3) vibration 1, 4) rest with force, 5) vibration 2, 6) postexposure with force, and 7) recovery with no force or vibration. A 2-N force was applied during periods 2-6 and 125-Hz vibration at 0.5 and 1.5 ms Ϫ2 root mean square (r.m.s.; unweighted) was applied during periods 3 and 5, respectively. Vibrotactile thresholds were measured at the thenar eminence of right hand using the same force, contact conditions, and vibration frequency. When the vibration magnitude was greater than individual vibration thresholds, changes in finger blood flow were correlated with thresholds (with both 0.5 and 1.5 ms Ϫ2 r.m.s. vibration): subjects with lower thresholds showed greater reductions in finger blood flow. Women had lower vibrotactile thresholds and showed greater vibration-induced reductions in finger blood flow. It is concluded that mechanoreceptors responsible for mediating vibration perception are involved in the vascular response to vibration.

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“…For example, the absolute reduction Industrial Health 2012, 50, 354-369 in finger blood flow is greater when the temperature is greater, but the percentage reduction in finger blood flow relative to finger blood flow before vibration exposure is similar 43) . Those with greater finger blood flow before vibration tend to have greater blood flow during vibration, and those with greater finger blood flow with one temperature tend to have greater blood flow with another temperature 43) .…”

Section: Effect Of Other Factorsmentioning

confidence: 99%

“…Related studies have further investigated the effects of the frequency of vibration 41) , the magnitude of vibration 42) , temperature 43) , and individual variability 42,44) . The dependence of vibration-induced vasoconstriction on the frequency of vibration is summarised below.…”

Section: Acute Vascular Responses To Vibrationmentioning

confidence: 99%

Frequency-dependence of Psychophysical and Physiological Responses to Hand-transmitted Vibration

Griffin

2012

Ind Health

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This invited paper reviews experimental studies of the frequency-dependence of absolute thresholds for the perception of vibration, equivalent comfort contours, temporary changes in sensation caused by vibration, and reductions in finger blood flow caused by hand-transmitted vibration. Absolute thresholds depend on the contact conditions but for a typical hand grip the thresholds show greatest sensitivity to acceleration around 125 Hz. The frequency-dependence of discomfort caused by hand-transmitted vibration depends on vibration magnitude: similar to absolute thresholds at low magnitudes, but the discomfort at higher magnitudes is similar when the vibration velocity is similar (at frequencies between about 16 and 400 Hz). Hand-transmitted vibration induces temporary elevations in vibrotactile thresholds that reflect the sensory mechanisms excited by the vibration and are therefore highly dependent on the frequency of vibration. Handtransmitted vibration reduces finger blood flow during and after exposure; when the vibration velocity is similar at all frequencies there is more vasoconstriction at frequencies greater than 63 Hz than at lower frequencies. A single frequency weighting cannot provide a good indication of how all effects of hand-transmitted vibration depend on vibration frequency. Furthermore, a single frequency weighting provides only an approximate indication of any single response, because many factors influence the frequency-dependence of responses to hand-transmitted vibration, including the magnitude of vibration, contact conditions, and individual differences. Although the frequency weighting in current standards extends from 8 to 1,000 Hz, frequencies greater than 400 Hz rarely increase the weighted value on tools and there is currently little psychophysical or physiological evidence of their effects.

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Effects of temperature on reductions in finger blood flow induced by vibration

Cited by 13 publications

References 32 publications

Relation between vibrotactile perception thresholds and reductions in finger blood flow induced by vibration of the hand at frequencies in the range 8–250 Hz

Relation between vibrotactile perception thresholds and reductions in finger blood flow induced by vibration of the hand at frequencies in the range 8–250 Hz

Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds

Frequency-dependence of Psychophysical and Physiological Responses to Hand-transmitted Vibration

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