Petersen P, Petrick M, Connor H, Conklin D
Department of Occupational Therapy, Elizabethtown College, Pennsylvania 17022-2298.
Am J Occup Ther. 1989 Jul;43(7):444-7. doi: 10.5014/ajot.43.7.444.
The purpose of this study was to test the utility of the 10% rule in hand rehabilitation. The 10% rule states that the dominant hand possesses a 10% greater grip strength than the nondominant hand. This rule has been used for many years to assist therapists in setting strength goals for patients with injured hands. The sample for this study consisted of 310 male and female students, faculty, and staff from a small, private liberal arts college located in Pennsylvania. Grip strength was measured with a factory-calibrated Jamar dynamometer. Results showed an overall 10.74% grip strength difference between dominant and nondominant hands. This finding verified the 10% rule. However, when the data were separated into left-handed and right-handed subjects, a 12.72% difference for right-handed subjects and a -0.08% difference for left-handed subjects was found. In conclusion, this study showed that the 10% rule is valid for right-handed persons only; for left-handed persons, grip strength should be considered equivalent in both hands.
本研究的目的是测试10%规则在手部康复中的效用。10%规则指出，优势手的握力比非优势手大10%。多年来，这条规则一直被用于帮助治疗师为手部受伤的患者设定力量目标。本研究的样本包括来自宾夕法尼亚州一所小型私立文理学院的310名男女学生、教师和工作人员。使用工厂校准的Jamar握力计测量握力。结果显示，优势手和非优势手之间的握力总体差异为10.74%。这一发现证实了10%规则。然而，当数据分为左撇子和右撇子受试者时，右撇子受试者的差异为12.72%，左撇子受试者的差异为-0.08%。总之，本研究表明，10%规则仅适用于右撇子；对于左撇子，双手的握力应被视为相等。
