ANCOVA models comparing means of total body bone mineral content (BMC) by total percent body fat (%BF), cardiorespiratory fitness (CRF) and vigorous physical activity (VPA) categories in children.

Covariates for %BF: Model 1(age and sex); Model 2 (Model 1+ VPA); Model 3: (Model 2+CRF). Superscript letter indicates statistical significance (≤ 0.050) for post hoc hypothesis test determinates by using the Bonferroni correction for multiple comparisons:a High >Medium> Low;b High> Medium;c High> Low.Covariates for CRF: Model 1(age and sex); Model 2 (Model 1+ VPA); Model 3: (Model 2+%BF) Superscript letter indicates statistical significance (≤ 0.050) for post hoc hypothesis test determinates by using the Bonferroni correction for multiple comparisons:a Poor> Satisfactory;b Poor> Good.Covariates for VPA: Model 1(age and sex); Model 2 (Model 1+ CRF); Model 3: (Model 2+%BF). Superscript letter indicates statistical significance (≤ 0.050) for post hoc hypothesis test determinates by using the Bonferroni correction for multiple comparisons:a Poor> Good.ANCOVA models comparing means of total body bone mineral content (BMC) by total percent body fat (%BF), cardiorespiratory fitness (CRF) and vigorous physical activity (VPA) categories in children.本研究采用协方差分析（Analysis of Covariance，ANCOVA）模型，比较儿童全身骨矿物质含量（BMC）在体脂百分比（%BF）、心肺适能（CRF）与剧烈体力活动（VPA）不同分组下的均值差异。针对体脂百分比（%BF）的协变量模型：模型1纳入年龄与性别；模型2在模型1基础上添加剧烈体力活动（VPA）；模型3在模型2基础上添加心肺适能（CRF）。上标字母代表经邦费罗尼多重比较校正后的事后假设检验具有统计学显著性（P≤0.050）：a组为高分组＞中分组＞低分组；b组为高分组＞中分组；c组为高分组＞低分组。针对心肺适能（CRF）的协变量模型：模型1纳入年龄与性别；模型2在模型1基础上添加剧烈体力活动（VPA）；模型3在模型2基础上添加体脂百分比（%BF）。上标字母代表经邦费罗尼多重比较校正后的事后假设检验具有统计学显著性（P≤0.050）：a组为差组＞达标组；b组为差组＞良好组。针对剧烈体力活动（VPA）的协变量模型：模型1纳入年龄与性别；模型2在模型1基础上添加心肺适能（CRF）；模型3在模型2基础上添加体脂百分比（%BF）。上标字母代表经邦费罗尼多重比较校正后的事后假设检验具有统计学显著性（P≤0.050）：a组为差组＞良好组。