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Acute response of finger circulation to force and vibration applied to the palm of the hand.

Griffin, M.J., Welsh, A.J.L. and Bovenzi, M. (2006) Acute response of finger circulation to force and vibration applied to the palm of the hand. Scandinavian Journal of Work, Environment & Health, 32, (5), pp. 383-391.

Record type: Article

Abstract

OBJECTIVES: This study investigated the effects of force at the palm on acute changes in finger circulation during exposure to vibration. METHODS: Ten persons attended five sessions consisting of the following five successive 5-minute periods: (i) no force and no vibration, (ii) force and no vibration, (iii) force and vibration, (iv) force and no vibration, and (v) no force and no vibration. During the second and fourth periods, the palm of the right hand applied 5 N or 20 N to a platform that vibrated (125 Hz, 64 m/s2 root mean square) during the third period. Finger blood flow was measured in the middle and little fingers of the right (exposed) hand and the middle finger of the left (unexposed) hand. RESULTS: A force of 20 N alone reduced the mean finger blood flow in the ipsilateral and contralateral fingers. Finger blood flow was also reduced by vibration, with greater reductions when vibration was combined with 20 N of force. Vibration caused vasoconstriction in the fingers of both the vibrated and nonvibrated hands. CONCLUSIONS: Force applied to the palm reduced blood flow in the fingers of the exposed hand, probably due to compression of the vascular system supplying the fingers. There was evidence that force may reduce finger blood flow in the contralateral hand, possibly due to a central sympathetic effect. Vibration at 125 Hz applied to the palm of the hand reduced finger blood flow in fingers of that hand and also in a finger of the contralateral hand. In this study, any local effects of vibration were less than those of central sympathetic origin.

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Published date: October 2006
Organisations: Human Sciences Group

Identifiers

Local EPrints ID: 39175
URI: http://eprints.soton.ac.uk/id/eprint/39175
ISSN: 0355-3140
PURE UUID: b546e75f-660d-4ac0-85be-5dcae4fdcef3
ORCID for M.J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

Catalogue record

Date deposited: 21 Jun 2006
Last modified: 17 Jul 2017 15:37

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Contributors

Author: M.J. Griffin ORCID iD
Author: A.J.L. Welsh
Author: M. Bovenzi

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