Niempoog Sunyarn, Siripakarn Yongyuth, Suntharapa Thongchai
Department of Orthopaedic Surgery, Faculty of Medicine, Thammasat University, Pathumthani, Thailand.
J Med Assoc Thai. 2007 Apr;90(4):699-705.
Find the correlation of grip strength in puberty with chronological age, height, weight, and percentage of body fat.
One thousand one hundred and five volunteer students between 11 and 14 years of age in Central Thailand participated in the study. The body weight and height were measured with standard balance and stadiometer The percentage of body fat was measured with Near Infrared interactance device. The grip strength was measured with Digital Handgrip Dynamometer The results were statistically analyzed by multiple linear regression.
It was found that grip strength has a significant correlation with age, height, and weight but not with percentage of body fat. The prediction of grip strength in puberty can be estimated with the following equations: a) For boys, Grip strength (kg) = -59.797 + 2.493 Age (yr) + 0.308 Height (cm) + 0.147 Weight (kg), and b) For girls, Grip strength (kg) = -32.887 + 0.926 Age (yr) + 0.236 Height (cm) + 0.155 Weight (kg).
The predictive value of an age, height, and weight equation is more precise than that of solely chronological age.
探究青春期握力与实际年龄、身高、体重及体脂百分比之间的相关性。
泰国中部11至14岁的1105名志愿学生参与了本研究。使用标准天平及身高计测量体重和身高，使用近红外干涉仪测量体脂百分比，使用数字握力计测量握力。结果采用多元线性回归进行统计学分析。
发现握力与年龄、身高和体重显著相关，但与体脂百分比无关。青春期握力的预测可通过以下公式估算：a）对于男孩，握力（kg）=-59.797 + 2.493×年龄（岁）+ 0.308×身高（cm）+ 0.147×体重（kg）；b）对于女孩，握力（kg）=-32.887 + 0.926×年龄（岁）+ 0.236×身高（cm）+ 0.155×体重（kg）。
年龄、身高和体重公式的预测价值比仅依据实际年龄的预测更精确。
