Dependence of finger flexion force on the posture of the nonperforming fingers during key pressing tasks.
Dependence of finger flexion force on the posture of the nonperforming fingers during key pressing tasks.
复制标题
在按键任务期间，手指屈曲力对不良手指姿势的依赖性。
DOI：
10.1080/00222890209601951
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Yue,GuangH
中科院分区：
文献类型：
--
作者：
Li,Zong-Ming;Yue,GuangH
研究了在按键任务中，不同位置的不良(空闲)手指对屈指(主指)最大力收缩的影响。10名受试者用食指、中指、无名指和小指的不同组合进行最大程度的自愿屈曲收缩，同时空闲的手指放在支撑面上或从支撑面上抬起。空手指姿势对主指总指力产生的影响取决于手指组合。总体而言，当空闲手指从支撑面上抬起时，主手指产生的力比它们放在支撑面上时要高。抬起闲指使主手指力产生平均增加12.4%(从−8.3%增加到+30.2%)。通过提起空闲手指，可以促进(高达34.1%)、不变或抑制(高达−29.0%)单个主指的力量生产能力。空手指姿势对主指指力产生的影响导致力亏的变化。神经、解剖学和力学因素可能解释了主指屈指力量依赖于空闲手指的姿势。
The influence of different positions of the non-performing (idle) fingers on the maximal force contraction of flexion (master) fingers during key pressing tasks was investigated. Ten participants performed maximal voluntary flexion contractions with various combinations of the index, middle, ring, and little fingers while the idle fingers rested on or were lifted away from the supporting surface. The effect of idle finger posture on total finger force production of master fingers was dependent on finger combination. In general, force production by master fingers was higher when the idle fingers were lifted away from the supporting surface than when they rested on it. The average increase in total force production by master fingers caused by the lifting of idle fingers was +12.4% (from −8.3% to +30.2%). Force-production capability of individual master fingers can be facilitated (as high as 34,1 %), unchanged, or depressed (as high as −29.0%) by lifting the idle fingers. The effect of idle finger posture on finger force production of master fingers led to changes in force deficit. Neural, anatomical, and mechanical factors might account for the dependence of finger flexion force of master fingers on the posture of the idle fingers.