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

被引:25
作者
Griffin, Michael J. [1 ]
Welsh, Alexandra J. L.
Bovenzi, Massimo
机构
[1] Univ Southampton, Inst Sound & Vibrat Res, Human Factors Res Unit, Southampton SO17 1BJ, Hants, England
[2] Univ Trieste, Trieste Gen Hosp, Dept Publ Hlth Sci, Clin Unit Occupat Med, Trieste, Italy
关键词
finger blood flow; force; hand palm; hand-transmitted vibration;
D O I
10.5271/sjweh.1034
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 [公共卫生与预防医学]; 120402 [社会医学与卫生事业管理];
摘要
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/s(2) 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.
引用
收藏
页码:383 / 391
页数:9
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