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Duration of acute exposures to vibration and finger circulation.

Publication ,  Journal Article
Bovenzi, M; Lindsell, CJ; Griffin, MJ
Published in: Scand J Work Environ Health
April 1998

OBJECTIVES: This study investigated changes in finger circulation after different durations of exposure to hand-transmitted vibration. METHODS: Finger skin temperature (FST), finger blood flow (FBF), and finger systolic blood pressure (FSBP) were measured in the middle fingers of both hands of 10 healthy men. Finger vascular resistance was also estimated. The right hand was exposed for 7.5, 15, and 30 minutes (static load 10 N) to 125-Hz vibration (root-mean-square acceleration 87 m/s2). Static load only was used as a control. Finger circulation was measured before the vibration and static load exposure and at fixed intervals during exposure and a 45-minute recovery period. RESULTS: No significant changes were found with the static load. The FST and FSBP did not change significantly during vibration exposure, whereas vibration produced significant reductions in FBF and increases in vascular resistance at each duration when compared with preexposure and contralateral (non-vibrated) finger values. Temporary vasodilation occurred in the vibrated finger immediately after each vibration exposure. Recovery was complete for FBF and vascular resistance after the 7.5-minute vibration, whereas a progressive FBF reduction occurred in both the vibrated and the nonvibrated fingers after 15- and 30-minute exposure. The longer the duration of vibration exposure, the stronger the vasoconstriction in the vibrated finger during recovery. CONCLUSIONS: Vasoregulatory mechanisms mediated by both intrinsic (local) and extrinsic (neural or endocrine) control systems seem to be related to digital circulatory changes during 125-Hz vibration. It is concluded that, not only the frequency and magnitude of vibration, but also its duration contributes to the reaction of the digital vessels to acute vibration.

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Published In

Scand J Work Environ Health

DOI

ISSN

0355-3140

Publication Date

April 1998

Volume

24

Issue

2

Start / End Page

130 / 137

Location

Finland

Related Subject Headings

  • Vibration
  • Vasoconstriction
  • Skin Temperature
  • Occupational Exposure
  • Middle Aged
  • Male
  • Humans
  • Fingers
  • Environmental & Occupational Health
  • Blood Flow Velocity
 

Citation

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Bovenzi, M., Lindsell, C. J., & Griffin, M. J. (1998). Duration of acute exposures to vibration and finger circulation. Scand J Work Environ Health, 24(2), 130–137. https://doi.org/10.5271/sjweh.290
Bovenzi, M., C. J. Lindsell, and M. J. Griffin. “Duration of acute exposures to vibration and finger circulation.Scand J Work Environ Health 24, no. 2 (April 1998): 130–37. https://doi.org/10.5271/sjweh.290.
Bovenzi M, Lindsell CJ, Griffin MJ. Duration of acute exposures to vibration and finger circulation. Scand J Work Environ Health. 1998 Apr;24(2):130–7.
Bovenzi, M., et al. “Duration of acute exposures to vibration and finger circulation.Scand J Work Environ Health, vol. 24, no. 2, Apr. 1998, pp. 130–37. Pubmed, doi:10.5271/sjweh.290.
Bovenzi M, Lindsell CJ, Griffin MJ. Duration of acute exposures to vibration and finger circulation. Scand J Work Environ Health. 1998 Apr;24(2):130–137.

Published In

Scand J Work Environ Health

DOI

ISSN

0355-3140

Publication Date

April 1998

Volume

24

Issue

2

Start / End Page

130 / 137

Location

Finland

Related Subject Headings

  • Vibration
  • Vasoconstriction
  • Skin Temperature
  • Occupational Exposure
  • Middle Aged
  • Male
  • Humans
  • Fingers
  • Environmental & Occupational Health
  • Blood Flow Velocity