Flôres Fábio Saraiva, Lourenço Joana, Phan Lucy, Jacobs Simon, Willig Renata Matheus, Marconcin Priscila Ellen Pinto, Casanova Nuno, Soares Denise, Clemente Filipe Manuel, Silva Ana Filipa
KinesioLab, Research Unit in Human Movement, Instituto Piaget, 1950-157 Lisboa, Portugal.
Research Center in Sports Performance, Recreation, Innovation and Technology (SPRINT), 4960-320 Melgaço, Portugal.
Children (Basel). 2023 Apr 19;10(4):743. doi: 10.3390/children10040743.
This study's aim was two-fold: (i) to test the intra-session reliability of the one-leg balance activity test; and (ii) to assess the influence of age on reaction time (RT) and the differences between dominant and non-dominant feet. Fifty young soccer players with an average age of 12.4 ± 1.8 years were divided into two groups: younger soccer players (n = 26; 11.6 ± 0.9 years) and older soccer players (n = 24; 14.2 ± 0.8 years). Each group then completed four trials (two with each leg) of the one-leg balance activity (OLBA) to evaluate RT under a single-leg stance. Mean RT and the number of hits were calculated, and the best trial was also selected. -tests and Pearson correlations were performed for statistical analysis. Values for RT were lower, and the number of hits was higher while standing on the non-dominant foot ( = 0.01). MANOVA revealed that the "Dominant Leg" factor did not affect the multivariate composite (Pillai Trace = 0.05; F(4, 43) = 0.565; = 0.689; Partial ETA Squared = 0.050; Observed Power = 0.174). The "Age" factor did not present an effect on the multivariate composite (Pillai Trace = 0.104; F(4, 43) = 1.243; = 0.307; Partial ETA Squared = 0.104; Observed Power = 0.355). The results of the present investigation demonstrate that RT may be lower while standing on the non-dominant foot.
（i）测试单腿平衡活动测试的组内信度；（ii）评估年龄对反应时间（RT）的影响以及优势脚和非优势脚之间的差异。50名平均年龄为12.4±1.8岁的年轻足球运动员被分为两组：较年轻的足球运动员（n = 26；11.6±0.9岁）和较年长的足球运动员（n = 24；14.2±0.8岁）。然后，每组完成四次单腿平衡活动（OLBA）试验（每条腿各两次），以评估单腿站立时的RT。计算平均RT和命中次数，并选择最佳试验。进行t检验和Pearson相关性分析以进行统计分析。站立在非优势脚上时，RT值较低，命中次数较高（P = 0.01）。多变量方差分析显示，“优势腿”因素不影响多变量综合指标（Pillai迹 = 0.05；F(4, 43) = 0.565；P = 0.689；偏Eta平方 = 0.050；观察功效 = 0.174）。“年龄”因素对多变量综合指标没有影响（Pillai迹 = 0.104；F(4, 43) = 1.243；P = 0.307；偏Eta平方 = 0.104；观察功效 = 0.355）。本调查结果表明，站立在非优势脚上时RT可能较低。
