Multimodal Integration Research Group, Human Technology Research Institute, Tsukuba, Ibaraki, Japan.
Ergonomics. 2011 Mar;54(3):273-81. doi: 10.1080/00140139.2010.547607.
To examine gender differences in hand stability, finger position and force holding tasks at low force levels were conducted with 30 male and 30 female young adults. Total fluctuation was defined as the standard deviation of measured data and fluctuation and the 10-Hz component of the physiological tremor were compared between maleand female subjects. In all tasks, the total fluctuation and the 10-Hz tremor were significantly larger in male subjects than females. On average, the fluctuation was 1.3 times larger and the 10-Hz tremor was 1.6 times larger. The results of this study suggest that women have superior hand stability compared with men at low force levels. Finger length, maximal voluntary contraction and surface electromyography were also measured and factors related to gender differences in hand stability are discussed. STATEMENT OF RELEVANCE: Hand stability is crucial for precise manual operations. This study demonstrated gender differences in hand steadiness at low force levels. Though hand dexterity cannot be explained only by hand stability, the results of this study are useful not only for occupational aptitude tests but also for neuropsychological tests.
为了研究手部稳定性的性别差异，对 30 名男性和 30 名女性年轻成年人进行了低力水平下的手部稳定性、手指位置和握持力任务。总波动被定义为测量数据的标准差，比较了男性和女性受试者之间的生理震颤的波动和 10Hz 成分。在所有任务中，男性受试者的总波动和 10Hz 震颤均显著大于女性。平均而言，波动幅度大 1.3 倍，10Hz 震颤幅度大 1.6 倍。这项研究的结果表明，女性在低力水平下的手部稳定性优于男性。还测量了手指长度、最大自主收缩和表面肌电图，并讨论了与手部稳定性性别差异相关的因素。相关性声明：手部稳定性对于精确的手动操作至关重要。这项研究表明，在低力水平下，手部稳定性存在性别差异。虽然手部灵活性不能仅用手部稳定性来解释，但这项研究的结果不仅对职业能力测试有用，对神经心理学测试也有用。
