Department of Human Nutrition, University of Otago, Level 7, Science 2 Building, 70 Union Street, Dunedin 9016, New Zealand.
Division of Sciences, University of Otago, 85 Union Place West, Dunedin 9016, New Zealand.
Int J Environ Res Public Health. 2021 Jul 30;18(15):8077. doi: 10.3390/ijerph18158077.
The majority of adolescents do less physical activity than is recommended by the World Health Organization. Active commuting and participation in organised sport and/or physical education individually have been shown to increase physical activity in adolescents. However, how these domains impact physical activity both individually and in combination has yet to be investigated in a sample of New Zealand female adolescents from around the country.
Adolescent females aged 15-18 y ( = 111) were recruited from 13 schools across eight locations throughout New Zealand to participate in this cross-sectional study. Participants completed questions about active commuting, and participation in organised sport and physical education, before wearing an Actigraph GT3X (Actigraph, Pensacola, FL, USA) +24 h a day for seven consecutive days to determine time spent in total, MVPA and light physical activity.
Active commuters accumulated 17 min/d (95% CI 8 to 26 min/d) more MVPA compared to those who did not. Those who participated in sport accumulated 45 min/d (95% CI 20 to 71 min/d) more light physical activity and 14 min/d (95% CI 5 to 23 min/d) more MVPA compared to those who did not. Participation in physical education did not seem to have a large impact on any component of physical activity. Participation in multiple domains of activity, e.g., active commuting and organised sport, was associated with higher accumulation of MVPA but not light activity. Conclusion Active commuting and sport both contribute a meaningful amount of daily MVPA. Sport participation has the potential to increase overall activity and displace sedentary behaviour. A combination of physical activity domains may be an important consideration when targeting ways to increase physical activity in adolescent females.
大多数青少年的身体活动量都低于世界卫生组织的推荐量。已有的研究表明，积极通勤和参与有组织的运动和/或体育课可以增加青少年的身体活动量。然而，在来自新西兰全国各地的青少年女性样本中，这些领域如何单独和组合影响身体活动量，尚未得到调查。
本横断面研究从新西兰 8 个地区的 13 所学校招募了 15-18 岁的青春期女性（n=111）。参与者完成了关于积极通勤和有组织的运动和体育课参与情况的问题，然后佩戴 Actigraph GT3X（Actigraph，Pensacola，FL，USA）连续 7 天 24 小时，以确定总活动时间、中等到剧烈体力活动和轻度体力活动时间。
与不积极通勤者相比，积极通勤者每天平均多积累 17 分钟的中等到剧烈体力活动（95%置信区间 8 到 26 分钟）。与不参加运动者相比，参加运动者每天多积累 45 分钟的轻度体力活动（95%置信区间 20 到 71 分钟）和 14 分钟的中等到剧烈体力活动（95%置信区间 5 到 23 分钟）。参加体育课似乎对任何身体活动成分都没有很大的影响。参与多个活动领域，如积极通勤和有组织的运动，与更高的中等到剧烈体力活动积累有关，但与轻度活动无关。结论：积极通勤和运动都能为青少年提供大量的中等到剧烈体力活动。运动参与有可能增加整体活动量，减少久坐行为。在针对增加青少年女性身体活动量的方法时，考虑多个身体活动领域可能是一个重要因素。
