Moghaddaszadeh Asal, Taqvi Urooj, Lee Caitlin, Lee Erran, Belcastro Angelo
Pediatric Exercise Physiology Laboratory, School of Kinesiology and Health Science, York University, Toronto, ON, Canada.
Muscle Health Research Centre, Faculty of Health, York University, Toronto, ON, Canada.
Front Sports Act Living. 2022 Aug 17;4:881664. doi: 10.3389/fspor.2022.881664. eCollection 2022.
Physical activity (PA) decreases during childhood with PA tracking statistics showing moderate coefficients in early childhood moving to poor coefficients in late childhood. The age-related instability of PA tracking is attributed to variations in age-related PA behaviors when quantifying PA in different settings (in/out of school, sports camps, and habitual PA). This study has examined the stability of age-related PA for children (from 7 to 11 years) during self-paced guided active play (GAP) sessions separated by 12 months.
Children ( = 65) recruited from community camps in two consecutive years were assessed for growth and PA participation during GAP sessions (1 hd on 2 dwk) using cooperative games. Accelerometer outputs were used to quantify PA and estimate energy expenditure (EE) and moderate-to-vigorous PA (MVPA). Tracking statistics were assessed by Spearman coefficients (r) and agreement scores for percentile rankings (Kappa (k)) after a 1-year interval.
Grouped data for PA tracking (EE) over the 1-year interval showed strong coefficients (r = 0.88, = 0.001) and moderate agreement scores (k = 0.54). Boys and girls showed similar results. During the 1-year interval, the MVPA tracking coefficient was r = 0.54 ( = 0.01) with a moderate k score of 0.47. Age-related PA (EE) tracking coefficients at 7 (r = 0.90), 8 (r = 0.88), 10 (r = 0.82), and 11 (r = 0.83) years showed strong coefficients except at 9 years (r = 0.51).
Children's age-related PA tracking (EE and MVPA) is stable during self-paced GAP assessed over a 1-year interval. Since PA tracking is stable in self-paced GAP, GAP should be included in children's PA intervention strategies to improve health and fitness.
儿童期身体活动（PA）会减少，PA追踪统计数据显示，幼儿期的相关系数中等，到儿童后期则变为较差。在不同环境（校内/校外、运动营地和日常PA）中对PA进行量化时，PA追踪与年龄相关的不稳定性归因于与年龄相关的PA行为差异。本研究考察了在间隔12个月的自定节奏引导式主动游戏（GAP）环节中，7至11岁儿童与年龄相关的PA的稳定性。
连续两年从社区营地招募儿童（n = 65），在GAP环节（每周2天，每次1小时）使用合作游戏评估其生长情况和PA参与度。使用加速度计输出数据来量化PA，并估计能量消耗（EE）和中等到剧烈身体活动（MVPA）。间隔1年后，通过Spearman系数（r）和百分位数排名的一致性得分（Kappa（κ））评估追踪统计数据。
1年间隔期内PA追踪（EE）的分组数据显示出强相关系数（r = 0.88，P = 0.001）和中等一致性得分（κ = 0.54）。男孩和女孩的结果相似。在1年间隔期内，MVPA追踪系数为r = 0.54（P = 0.01），κ得分为中等的0.47。7岁（r =
