Centre for Vision Research, Department of Ophthalmology and Westmead Millennium Institute, University of Sydney, Sydney, New South Wales, Australia.
Pediatrics. 2012 Jul;130(1):e167-74. doi: 10.1542/peds.2011-3637. Epub 2012 Jun 11.
Our goal was to assess cross-sectional and longitudinal associations between physical activity and sedentary behaviors (television viewing, computer and video-game usage, and reading) with health-related QoL.
Of 2353 children surveyed (median age: 12.7 years), 1216 were resurveyed 5 years later, and 475 were newly recruited into the study (N = 1691). Children completed detailed activity questionnaires. Health-related QoL was assessed by using the Pediatric Quality of Life Inventory (PedsQL).
Cross-sectionally, after multivariable adjustment, adolescents in the highest versus lowest tertile of time spent in outdoor physical activity and television viewing had a higher (P(trend) = .001) and lower (P(trend) = .0003) total PedsQL score, respectively. Adolescents who remained in the highest tertiles compared with those in the lowest tertiles of total physical activity over the 5 years had significantly higher scores in the following areas: total (P(trend) = .04), physical summary (P(trend) = .0001), and social (P(trend) = .02) domains. Conversely, those in the highest versus lowest tertile of screen-viewing time during follow-up reported significantly lower values in the following areas: total score (6.34-unit difference), physical summary (4.86-unit difference), psychosocial summary (7.09-unit difference), and emotional (8.33-unit difference) and school (9.78-unit difference) domains.
Regular physical activity over the long-term was associated with higher perceived health-related QoL among adolescents. Conversely, lower PedsQL scores were observed among those who spent the most time in screen-viewing activities. Improved understanding of these relationships could help in developing interventions to promote general well-being among adolescents.
评估身体活动和久坐行为（看电视、使用电脑和视频游戏以及阅读）与健康相关生活质量之间的横断面和纵向关联。
在接受调查的 2353 名儿童中（中位年龄：12.7 岁），有 1216 名儿童在 5 年后进行了重测，另有 475 名儿童新招募入组（共 1691 名儿童）。儿童完成了详细的活动问卷。使用儿童生活质量量表（PedsQL）评估与健康相关的生活质量。
横断面分析中，在进行多变量调整后，与户外活动时间和看电视时间最低三分位相比，时间最高三分位的青少年的 PedsQL 总分更高（P（趋势）=0.001），得分更低（P（趋势）=0.0003）。与 5 年内始终处于最低三分位的青少年相比，始终处于最高三分位的青少年在以下方面的得分显著更高：总分（P（趋势）=0.04）、身体综合（P（趋势）=0.0001）和社会（P（趋势）=0.02）领域。相反，在随访期间处于最高三分位的青少年与处于最低三分位的青少年相比，在以下方面的得分显著较低：总分（相差 6.34 分）、身体综合（相差 4.86 分）、心理社会综合（相差 7.09 分）、情感（相差 8.33 分）和学校（相差 9.78 分）领域。
长期有规律的身体活动与青少年感知的健康相关生活质量较高有关。相反，那些花费最多时间进行屏幕活动的青少年的 PedsQL 得分较低。更好地了解这些关系有助于制定干预措施，促进青少年的整体健康。
