Association between 20 m shuttle run test and psychological sub-health among Chinese Han adolescents

Objective To detemine the relationship between 20-meter shuttle run(20 m SRT) and psychological sub-health status among Chinese Han adolescents.Methods Random sampling method was adopted to select adolescents from six major administrative regions in China.A total of 8 595 adolescents were investigated with Multidimensional Sub-health Questionnaire of Adolescents(MSQA) and 20 m SRT.Results The total prevalence of psychological sub-health symptoms of boys and girls in China was 20.9% and 21.3%,respectively.The prevalence rate of psychological sub-health symptoms among boy aged 13-18 years was between 13.2% and 24.7%,lowest among 18-year-olds(13.2%) and highest among 14-year-olds(24.7%);for girls,the figures were 15.4% and 25.9%,lowest among 18-year-olds(15.4%) and highest among 13-year-olds(25.9%).The total prevalence of psychological sub-health symptoms among boys with better 20 m SRT performance was 18.1%,significantly lower than that of boys with low 20 m SRT performance(23.1%) (P<0.05);for girls,the same pattern was found(19.5% and 22.6%,P<0.05).Logistic regression analysis showed that the prevalence rates of psychological sub-health symptoms in adolescents were lower in specific areas (southwest,northwest and South),age group(late adolescence) and students with better 20 m SRT performance(P<0.05).Conclusion Psychological sub-health symptoms is more prevalent in early adolescence and among adolescents with poor cardiorespiratory fitness.