Murphy Marie H, O'Kane S Maria, Carlin Angela, Lahart Ian M, Doherty Leanne C, Jago Russell, McDermott Gary, Faulkner Maria, Gallagher Alison M
Centre for Exercise Medicine, Physical Activity and Health, Sports and Exercise Sciences Research Institute, Ulster University, Belfast, BT15 1ED, UK.
Physical Activity for Health Research Centre (PHARC), Institute for Sport, Physical Education and Health Sciences, University of Edinburgh, Edinburgh, EH8 9YL, UK.
Int J Behav Nutr Phys Act. 2024 Feb 19;21(1):19. doi: 10.1186/s12966-024-01563-0.
Most adolescent girls fail to meet current physical activity guidelines. Physical activity behaviours track from childhood into adulthood and providing adolescent girls with opportunities to be physically active may have health benefits beyond childhood. The effects of walking interventions on adult cardiometabolic health are known, however less is understood about the potential of walking to promote physical activity in adolescents. Following the Walking In ScHools (WISH) feasibility study, this definitive trial aimed to evaluate the effectiveness of a novel, low-cost, school-based walking intervention at increasing physical activity levels of adolescent girls (aged 12-14 years).
Female pupils were recruited from eighteen schools across the border region of Ireland and in Northern Ireland. In intervention schools (n = 9), girls aged 15-18 years, were trained as walk leaders, and led the younger pupils in 10-15 min walks before school, at break and lunch recess. All walks took place in school grounds and pupils were encouraged to participate in as many walks as possible each week. The primary outcome measure was accelerometer determined total physical activity (counts per minutes, cpm).
In total, 589 pupils were recruited to the study. At baseline, pupils engaged in a median (interquartile range (IQR)) 35.7 (21.2) mins moderate-vigorous physical activity (MVPA) per day and only 12% (n = 66) of participants met physical activity guidelines (60 min MVPA per day). The intervention was delivered for a mean (standard deviation (SD)) 19.9 ± 0.97 weeks. The mean post-intervention total physical activity for the intervention group was 676 cpm and 710 cpm in the control group. Post-intervention total physical activity did not statistically differ between groups when adjusted for age, body mass index z-scores and baseline physical activity (mean difference, -33.5, 95% CI = -21.2 to 88.1; p = 0.213).
'Scaling-up' physical activity interventions is challenging and despite a promising feasibility study, the results of this fully powered trial suggest that in this context, the WISH intervention did not increase device measured physical activity. Since the COVID-19 pandemic, school environments have changed and although pupils enjoyed the programme, attendance at walks was low, indicating that there is a need to better understand how to implement interventions within schools.
ISRCTN; ISRCTN12847782; Registered 2nd July 2019.
大多数青春期女孩未达到当前的体育活动指南要求。体育活动行为从儿童期持续至成年期，为青春期女孩提供体育活动机会可能对其健康有益，且这种益处不止于儿童期。步行干预对成人心血管代谢健康的影响已为人所知，但对于步行促进青少年体育活动的潜力了解较少。在“学校步行计划（WISH）”可行性研究之后，这项确定性试验旨在评估一种新型、低成本、基于学校的步行干预措施对提高青春期女孩（12 - 14岁）体育活动水平的有效性。
从爱尔兰边境地区和北爱尔兰的18所学校招募女学生。在干预学校（n = 9），15 - 18岁的女孩被培训为步行领队，在上学前、课间休息和午餐休息时间带领低年级学生进行10 - 15分钟的步行。所有步行均在校园内进行，鼓励学生每周尽可能多地参加步行活动。主要结局指标是通过加速度计测定的总体育活动量（每分钟计数，cpm）。
总共589名学生被纳入该研究。在基线时，学生每天进行中等至剧烈体育活动（MVPA）的中位数（四分位间距（IQR））为35.7（21.2）分钟，只有12%（n = 66）的参与者达到体育活动指南要求（每天60分钟MVPA）。干预持续了平均（标准差（SD））19.9 ± 0.97周。干预组干预后的总体育活动量平均为676 cpm，对照组为710 cpm。在对年龄、体重指数z评分和基线体育活动进行调整后，两组干预后的总体育活动量在统计学上无差异（平均差异为 -33.5，95%置信区间 = -21.2至88.1；p = 0.213）。
“扩大规模”体育活动干预具有挑战性，尽管可行性研究结果令人鼓舞，但这项充分有力的试验结果表明，在此背景下，WISH干预并未增加通过设备测量的体育活动量。自新冠疫情以来，学校环境发生了变化，尽管学生喜欢该项目，但步行活动的参与率较低，这表明有必要更好地了解如何在学校内实施干预措施。
ISRCTN；ISRCTN12847782；2019年7月2日注册。
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