Abstract:
OBJECTIVES:The main objective was to study the acute vascular effects in the hands of normal healthy subjects of a complex vibration spectrum similar to that generated by many industrial hand held tools. The effects of repeated bouts of vibrations and alterations in the intensity of vibration were also studied. METHODS:Blood flow was measured by venous occlusion plethysmography with strain gauges. Vibration across a frequency range of 0.4 to > 4000 Hz was generated by a pneumatic chisel and applied to the right hand. Blood flow was measured in both middle fingers, both big toes, or both forearms before, during, and after a two minute period of vibration. Systolic pressure of a finger and heart rate were also measured. RESULTS:Vibration was associated with a significant bilateral reduction in finger and toe blood flow (P < 0.01 and P < 0.03) and a significant increase in heart rate (P < 0.05) but had no effect on forearm blood flow. The finger response was not abolished by repeated bouts of the vibration but was initially most notable during the first minute of vibration. Increasing the intensity of vibration delayed recovery. CONCLUSIONS:Hand vibration causes a generalised increase in sympathetic tone in the heart and extremities. This may be a factor in the development of vasospastic disease in habitual users of hand held industrial vibrating tools.
journal_name
Occup Environ Medjournal_title
Occupational and environmental medicineauthors
Egan CE,Espie BH,McGrann S,McKenna KM,Allen JAdoi
10.1136/oem.53.10.663subject
Has Abstractpub_date
1996-10-01 00:00:00pages
663-9issue
10eissn
1351-0711issn
1470-7926journal_volume
53pub_type
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更新日期:2012-12-01 00:00:00
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更新日期:2002-02-01 00:00:00
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更新日期:2017-11-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2002-04-01 00:00:00
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journal_title:Occupational and environmental medicine
pub_type: 杂志文章
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更新日期:1996-02-01 00:00:00
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更新日期:2016-09-01 00:00:00
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