1 Department of Health, Kinesiology, and Recreation, University of Utah, Salt Lake City, UT, USA.
2 College of Education, Health and Human Services, Kent State University, Kent, OH, USA.
Am J Health Promot. 2019 Jun;33(5):760-763. doi: 10.1177/0890117118812666. Epub 2018 Nov 12.
To examine the trends in total and segmented sedentary and physical activity behaviors during a Sports, Play, and Recreation for Kids (SPARK) program in incarcerated adolescent boys.
Longitudinal trend analysis.
Two juvenile justice facilities.
Eighty-six adolescent boys (mean age = 17.1 ± 1.0 years).
Sports, Play, and Recreation for Kids implemented over 36 weeks.
Sedentary times and physical activity were examined at baseline and at 3 follow-up time points at 12, 24, and 36 weeks after SPARK implementation. Physical activity was assessed using the percentage of accelerometer wear time within each segment for sedentary (%SED) and moderate-to-vigorous physical activity (%MVPA).
Trends in %SED and %MVPA were assessed using 2 × 4 doubly multivariate analysis of variance tests.
For the total week, there was a significantly lower %SED (mean difference = -10.6%, P < .001) and significantly higher %MVPA (mean difference = +3.0%, P < .001) at the 24-week follow-up compared to baseline. There were also significantly lower %SED and higher %MVPA before school, after school, and during the weekends at 24-week follow-up compared to baseline ( P < .01).
There were significantly lower sedentary times and higher levels of physical activity during the middle portions of the SPARK intervention in incarcerated adolescent boys, highlighting the potential of this intervention to affect sedentary and physical activity behaviors in the population.
研究参与 Sports, Play, and Recreation for Kids（SPARK）项目的青少年罪犯男孩的总体和分段久坐及体育活动行为的变化趋势。
纵向趋势分析。
两个青少年司法机构。
86 名青少年男孩（平均年龄=17.1±1.0 岁）。
在 36 周内实施 Sports, Play, and Recreation for Kids。
在基线和 SPARK 实施后 12、24 和 36 周的 3 个随访时间点，检查久坐时间和体育活动。使用加速度计佩戴时间内的每个时间段内的久坐时间（%SED）和中等到剧烈体力活动（%MVPA）的百分比评估体育活动。
使用 2×4 双重多元方差分析检验评估 %SED 和 %MVPA 的趋势。
在整个星期内，与基线相比，24 周随访时的 %SED 明显降低（平均差异=-10.6%，P<.001），%MVPA 明显升高（平均差异=+3.0%，P<.001）。在上学前、放学后和周末，24 周随访时的 %SED 也明显降低，%MVPA 明显升高（P<.01）。
在 SPARK 干预的中间阶段，监禁中的青少年罪犯男孩的久坐时间明显减少，体育活动水平明显提高，这突显了该干预措施对影响该人群久坐和体育活动行为的潜力。
