Department of Behavioral Health and Nutrition, University of Delaware, Newark, Delaware, USA.
College of Health Professions and Sciences, University of Central Florida, Orlando, Florida, USA.
Autism Res. 2021 Mar;14(3):545-550. doi: 10.1002/aur.2434. Epub 2020 Nov 13.
This study (a) examined the daily composition of 24-hr movement behaviors in children with ASD using objective measures, and (b) applied compositional analysis to examine the associations of the time spent in moderate-vigorous physical activity (MVPA), light physical activity (LPA), sedentary behavior (SB), and sleep duration (SD) with body mass index (BMI), relative to the time spent in the other movement behaviors in a sample of children (aged 7-19 years) with ASD. Time spent in MVPA, LPA, SB, and SD were measured using accelerometers over a 7-day period. BMI was calculated from measured height and weight. Participants (n = 46) spent 40% of time in LPA (M = 9.6 hr), 30.6% (M = 7.34 hr) in SB, 24.9% (M = 5.98 hr) asleep, and 4.5% (M = 64.8 min) in MVPA. Reallocating 30 min from LPA to SD decreased BMI by 0.471 kg/m (P = 0.003). Reallocating 30 min from MVPA to SD decreased BMI by 0.658 kg/m (P = 0.051). Reallocation of 60 min in equal proportions from SB, MVPA, and SD to LPA increased BMI by 0.418 kg/m (P = 0.021), and reallocation of 60 min in equal proportions from LPA, MVPA, and SD to SB increased BMI by 0.295 kg/m (P = 0.052). Finally, reallocation of 60 min in equal proportions from SB, LPA, and MVPA to SD decreased BMI by -0.845 kg/m (P = 0.001). LAY SUMMARY: Data was collected on time spent in light physical activity (LPA), moderate-vigorous physical activity (MVPA), sedentary behavior (SB), and sleep in 46 children with autism. The sample had insufficient sleep (a mean of 6 hr/night). We showed that replacing 30 min of LPA or MVPA with sleep decreased BMI. Also, moving 60 min to LPA or SB from the remaining movement behaviors (i.e., 20 min from each) increased BMI, and moving 60 min to sleep from the remaining behaviors decreased BMI.
本研究（a）使用客观测量方法检查了 ASD 儿童 24 小时运动行为的日常构成，（b）应用组成分析检查了中高强度体力活动（MVPA）、低强度体力活动（LPA）、久坐行为（SB）和睡眠时间（SD）与身体质量指数（BMI）的关系，相对于 ASD 儿童样本中其他运动行为的时间分配。使用加速度计在 7 天内测量 MVPA、LPA、SB 和 SD 的时间。BMI 是根据测量的身高和体重计算得出的。参与者（n = 46）有 40%的时间用于 LPA（M = 9.6 小时），30.6%（M = 7.34 小时）用于 SB，24.9%（M = 5.98 小时）用于睡眠，4.5%（M = 64.8 分钟）用于 MVPA。将 30 分钟从 LPA 重新分配到 SD，可使 BMI 降低 0.471kg/m（P = 0.003）。将 30 分钟从 MVPA 重新分配到 SD，可使 BMI 降低 0.658kg/m（P = 0.051）。将 SB、MVPA 和 SD 中的 60 分钟等比例重新分配到 LPA 可使 BMI 增加 0.418kg/m（P = 0.021），将 LPA、MVPA 和 SD 中的 60 分钟等比例重新分配到 SB 可使 BMI 增加 0.295kg/m（P = 0.052）。最后，将 SB、LPA 和 MVPA 中的 60 分钟等比例重新分配到 SD 可使 BMI 降低-0.845kg/m（P = 0.001）。
