青少年相对握力（握力除以体重），是识别机体非稳态负荷水平的有效指标？

Comparison Between Grip Strength and Relative Grip Strength in Their Relationship With Allostatic Load among Adolescents

比较青少年握力和相对握力与机体非稳态负荷的关联

Author: Huiqiong Xu, Xi Wang, Wan Xiao, Yang Xie, Xinyu Zhang, Shaojun Xu, Yuhui Wan, Fangbiao Tao

Source: BMC Public Health

DOI:10.1186/s12889-024-20129-0

Abstract

Purpose： To assess the associations of muscle strength, measure by grip strength and relative grip strength (grip strength divided by body weight), on the allostatic load (AL) index in adolescent boys and girls.

Methods： A total of 1,323 students were recruited (boys=776, girls=547). Data on general demographic characteristics, anthropometric indicators, grip strength, blood pressure, pulse rate, and biological samples were collected. A 20-indicator-based AL index (using the AL₁, AL₂, and AL₃ calculation methods) was used as the dependent variable. Multiple linear regression models were used to evaluate the association between grip strength, relative grip strength, and AL. All analyses were stratified by sex.

Results： The mean age of the participants was 14.17±1.45 years. Overall, the linear regression model adjusting for demografic characteristics showed that greater grip strength was associated with higher AL₁ scores (R²=10.1%, β=0.096, P<0.001). Then, we further adjusted for body weight, and negative associations were observed between grip strength and AL₁ (R²=35.3%, β=-0.027, P=0.030). However, after sex stratification, this association was not statistically significant in girls. Moreover, relative grip strength was negatively associated with AL₁ (R²=14.8%, β=-8.529, P<0.001) after adjusting for demographic characteristics in the total sample. Specifically, relative grip strength was more strongly associated with the AL₁ burden in boys than in girls. Finally, sensitivity analyses of AL₂ and AL₃ yielded similar results.

Conclusion： We observed that compared with grip strength, relative grip strength might be a useful indicator for the identification of AL burden in adolescents. The results suggest that strengthening relative handgrip strength in adolescents might help reduce the AL burden, especially in boys.

摘要

目的：探讨握力和相对握力（握力除以体重）与不同性别青少年非稳态负荷（AL）指数之间的关联。

方法：共纳入1323名学生（男生776名，女生547名）。收集一般人口学特征、人体测量指标、握力、血压、脉率和生物样本等。基于20项指标构建AL指数（采用AL₁、AL₂和AL₃三种计算方法）作为因变量。使用多元线性回归模型评估握力、相对握力与不同AL指数之间的关联。所有分析均按性别进行分层。

结果：参与者平均年龄为14.17±1.45岁。首先，在调整一般人口学特征后，握力与AL₁呈正向关联（R²=10.1%，β=0.096，P<0.001）；当进一步调整体重因素，分析发现握力与AL₁呈负向关联（R²=35.3%，β=-0.027，P=0.030）；按性别分层后，研究发现以上关联在女生中无统计学意义。此外，在调整一般人口学特征后，相对握力与AL₁呈负向关联（R²=14.8%，β=-8.529，P<0.001），且该关联在男生中的强度大于女生。最后，本研究对于AL₂和AL₃进行了敏感性分析，所得结果与上述相似。

结论：本研究表明，与握力相比，相对握力可能是识别青少年AL负担的有效指标，增强青少年的相对握力可能有助于减轻AL负担，尤其对于男生更为重要。