Ieiri Akira, Tushima Eiki, Ishida Kazuhiro, Inoue Masahiro, Kanno Taiki, Masuda Takeshi
Department of Rehabilitation, Eniwa Hospital, Eniwa City , Hokkaido , Japan .
Physiother Theory Pract. 2015 Feb;31(2):146-52. doi: 10.3109/09593985.2014.960539. Epub 2014 Sep 29.
This study aimed to evaluate intrarater and interrater reliability when measuring hip abductor strength in the supine position using a hand-held dynamometer (HHD) (Study 1), and to elucidate the relationships between measured values and examiners' physical characteristics (Study 2). Three healthy examiners (1 female, 24 y.o. and 2 males 23 and 27 y.o) and 12 subjects (6 females, 24.5 ± 2.8 years and 6 males, 27.7 ± 3.5 years) participated in Study 1, and 20 healthy examiners (7 females, 22.3 ± 1.3 years and 13 males, 29.4 ± 8.2 years) and 2 subjects (1 female, 24 y.o. and 1 male 27 y.o) participated in Study 2. All healthy examiners were hospital employees. Hip abductor strength was measured by HHD with hand fixation and with belt fixation, and examiner age, sex, height, weight, BMI, and dominant hand grip strength were evaluated. The intraclass correlation coefficient (ICC) (1,1), a measure of intrarater reliability, was 0.89-0.95 with hand fixation and 0.96-0.97 with belt fixation. ICC (2,1), a measure of interrater reliability, was 0.76-0.79 and 0.90-0.93, respectively. In subjects with high muscle strength (the examiner's hand was moved), the examiner's dominant hand grip strength affected muscle strength values with hand fixation (standardized partial regression coefficient = 0.78, determination coefficient R(2 )= 0.61, p < 0.01). In subjects with low muscle strength (the examiner's hand was not moved), no variables had effect. When the muscle strength of the subject is weak, both methods can be used. When the muscle strength of the subject is strong, it is necessary to adjust the value obtained by the examiner's dominant hand grip strength in the hand fixation method.
本研究旨在评估使用手持测力计（HHD）在仰卧位测量髋外展肌力量时的测量者内和测量者间信度（研究1），并阐明测量值与检查者身体特征之间的关系（研究2）。三名健康检查者（1名女性，24岁，2名男性，23岁和27岁）和12名受试者（6名女性，24.5±2.8岁，6名男性，27.7±3.5岁）参与了研究1，20名健康检查者（7名女性，22.3±1.3岁，13名男性，29.4±8.2岁）和2名受试者（1名女性，24岁，1名男性，27岁）参与了研究2。所有健康检查者均为医院工作人员。使用手持固定和束带固定的HHD测量髋外展肌力量，并评估检查者的年龄、性别、身高、体重、BMI和优势手握力。测量者内信度的组内相关系数（ICC）（1,1），手持固定时为0.89 - 0.95，束带固定时为0.96 - 0.97。测量者间信度的ICC（2,1）分别为0.76 - 0.79和0.90 - 0.93。在肌肉力量较高的受试者（检查者的手被推动）中，检查者的优势手握力对手持固定时的肌肉力量值有影响（标准化偏回归系数 = 0.78，决定系数R(2) = 0.61，p < 0.01）。在肌肉力量较低的受试者（检查者的手未被推动）中，没有变量产生影响。当受试者的肌肉力量较弱时，两种方法均可使用。当受试者的肌肉力量较强时，有必要在手持固定方法中调整由检查者优势手握力获得的值。
