Department of Sport Education, Hokkaido University of Education, Iwamizawa, Hokkaido, Japan.
Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo, 192-0397, Japan.
Eur J Appl Physiol. 2018 May;118(5):1003-1010. doi: 10.1007/s00421-018-3827-x. Epub 2018 Mar 3.
There are only a few studies on the muscular strength of the foot in children and adolescents; thus, the developmental pattern and normative data of these populations during growth are unclear. We sought to elucidate the developmental pattern of the foot muscle strength among children, adolescents, and young adults compared with that of the hand.
A total of 747 children, adolescents, and young adults participated in this study, and their maximum isometric toe flexor strength (TFS), hand grip strength (HGS), and foot length were measured.
TFS was correlated with HGS (r = 0.785), age (r = 0.659), height (r = 0.757), body mass (r = 0.737), and foot length (r = 0.594). Multiple regression analyses revealed that TFS was correlated with age (β = 0.243 in boys; β = 0.461 in girls), squared value of age (age; β = - 0.296 in boys; β = - 0.260 in girls), and body mass (β = 0.256 in boys; β = 0.311 in girls) in both sexes, indicating a non-linear relationship between age and TFS development. In a regression model for HGS, age was a significant variable, but not age. HGS increased linearly from childhood until young adulthood, whereas TFS increased from childhood until adolescence and then levelled off.
Our results demonstrate that TFS has a different developmental pattern compared with HGS.
关于儿童和青少年足部肌肉力量的研究很少；因此，这些人群在生长过程中的发展模式和正常数据尚不清楚。我们旨在阐明与手部相比，儿童、青少年和年轻成年人足部肌肉力量的发育模式。
共有 747 名儿童、青少年和年轻成年人参加了这项研究，测量了他们的最大等长足趾屈肌力量（TFS）、手握力（HGS）和足长。
TFS 与 HGS（r=0.785）、年龄（r=0.659）、身高（r=0.757）、体重（r=0.737）和足长（r=0.594）相关。多元回归分析显示，TFS 与年龄（男孩为 0.243；女孩为 0.461）、年龄的平方值（男孩为-0.296；女孩为-0.260）和体重（男孩为 0.256；女孩为 0.311）相关，表明年龄和 TFS 发展之间存在非线性关系。在 HGS 的回归模型中，年龄是一个重要的变量，但不是年龄。HGS 从儿童期一直线性增加到青年期，而 TFS 则从儿童期一直增加到青春期，然后趋于平稳。
我们的结果表明，TFS 的发育模式与 HGS 不同。
