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Reduction in finger blood flow induced by hand-transmitted vibration: effect of hand elevation

Reduction in finger blood flow induced by hand-transmitted vibration: effect of hand elevation
Reduction in finger blood flow induced by hand-transmitted vibration: effect of hand elevation

Objectives: This study investigated the effect of hand elevation on reductions in finger blood flow (FBF) induced by hand-transmitted vibration.

Methods: Fourteen males attended six sessions on six separate days, with a control sessions and a vibration session (125-Hz vibration at 44 ms−2 rms) with the right hand supported at each of three elevations: 20 cm below heart level (HL), at HL, and 20 cm above HL. Finger blood flow on the left and right hand was measured every 30 s during each 25-min session comprised of five periods: (1) no force and no vibration (5 min), (2) 2-N force and no vibration (5 min), (3) 2-N force and vibration (5 min), (4) 2-N force and no vibration (5 min), and (5) no force and no vibration (5 min).

Results: Without vibration, FBF decreased with increasing elevation of the hand. During vibration of the right hand, FBF reduced on both hands. With elevation of the right hand, the percentage reduction in FBF due to vibration (relative to FBF on the same finger at the same elevation before exposure to vibration) was similar on the middle and little fingers of both hands. After cessation of vibration, there was delayed return of FBF with all three hand heights.

Conclusions: Vibration of one hand reduces FBF on both exposed and unexposed hands, with the reduction dependent on the elevation of the hand. The mechanisms responsible for vibration-induced reductions in FBF seem to reduce blood flow as a percentage of the blood flow without vibration. Tasks requiring the elevation of the hands will be associated with lower FBF, and the FBF will be reduced further if there is exposure to hand-transmitted vibration.

Finger blood flow, Hand elevation, Hand-arm vibration syndrome, Hand-transmitted vibration, Vibration-induced white finger
0340-0131
981-992
Ye, Ying
5cfc9fff-c24f-4e7c-8a97-c78436d79966
Mauro, Marcella
c72aeb1a-be45-42d6-be41-449f79a7b771
Bovenzi, Massimo
fc8fbd59-6c3f-46f1-b8f5-2a00b759857c
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Ye, Ying
5cfc9fff-c24f-4e7c-8a97-c78436d79966
Mauro, Marcella
c72aeb1a-be45-42d6-be41-449f79a7b771
Bovenzi, Massimo
fc8fbd59-6c3f-46f1-b8f5-2a00b759857c
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8

Ye, Ying, Mauro, Marcella, Bovenzi, Massimo and Griffin, Michael J. (2015) Reduction in finger blood flow induced by hand-transmitted vibration: effect of hand elevation. International Archives of Occupational and Environmental Health, 88 (7), 981-992. (doi:10.1007/s00420-015-1027-0).

Record type: Article

Abstract

Objectives: This study investigated the effect of hand elevation on reductions in finger blood flow (FBF) induced by hand-transmitted vibration.

Methods: Fourteen males attended six sessions on six separate days, with a control sessions and a vibration session (125-Hz vibration at 44 ms−2 rms) with the right hand supported at each of three elevations: 20 cm below heart level (HL), at HL, and 20 cm above HL. Finger blood flow on the left and right hand was measured every 30 s during each 25-min session comprised of five periods: (1) no force and no vibration (5 min), (2) 2-N force and no vibration (5 min), (3) 2-N force and vibration (5 min), (4) 2-N force and no vibration (5 min), and (5) no force and no vibration (5 min).

Results: Without vibration, FBF decreased with increasing elevation of the hand. During vibration of the right hand, FBF reduced on both hands. With elevation of the right hand, the percentage reduction in FBF due to vibration (relative to FBF on the same finger at the same elevation before exposure to vibration) was similar on the middle and little fingers of both hands. After cessation of vibration, there was delayed return of FBF with all three hand heights.

Conclusions: Vibration of one hand reduces FBF on both exposed and unexposed hands, with the reduction dependent on the elevation of the hand. The mechanisms responsible for vibration-induced reductions in FBF seem to reduce blood flow as a percentage of the blood flow without vibration. Tasks requiring the elevation of the hands will be associated with lower FBF, and the FBF will be reduced further if there is exposure to hand-transmitted vibration.

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More information

e-pub ahead of print date: 8 February 2015
Published date: 14 October 2015
Keywords: Finger blood flow, Hand elevation, Hand-arm vibration syndrome, Hand-transmitted vibration, Vibration-induced white finger
Organisations: University of Southampton, Human Sciences Group

Identifiers

Local EPrints ID: 406276
URI: http://eprints.soton.ac.uk/id/eprint/406276
ISSN: 0340-0131
PURE UUID: aff6ff75-1758-484c-8f07-70b926ee2465
ORCID for Michael J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

Catalogue record

Date deposited: 10 Mar 2017 10:43
Last modified: 07 Oct 2020 02:47

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