Bennie Jason A, Smith Jordan J, Qian Wei, Leatherdale Scott T, Faulkner Guy
Physically Active Lifestyles Research Group (USQ-PALs), Centre for Health Research, University of Southern Queensland, Australia.
Priority Research Centre for Physical Activity and Nutrition, School of Education, University of Newcastle, Australia.
J Sci Med Sport. 2022 Mar;25(3):230-234. doi: 10.1016/j.jsams.2021.10.008. Epub 2021 Oct 20.
Muscle-strengthening activity (MSE e.g. push-ups, sit-ups, use of weight machines) is linked to multiple health benefits for youth, and is part of the global physical activity guidelines for children and adolescents (5-17 years). However, MSE is rarely assessed in youth health surveillance. This study describes the longitudinal trends and predictors of MSE among a cohort of Canadian youths.
Longitudinal.
Data were drawn from a cohort of 3366 youths who participated in three waves of COMPASS, a longitudinal study of secondary school students across Canada [Wave 1 (T1) 2015/16, Wave 2 (T2) 2016/17, Wave 3 (T3) 2018/19]. The prevalence of the sample meeting the MSE guideline (≥3 days/week) was calculated for each wave. A multivariable logistic regression assessed the odds of meeting the MSE guideline for each wave (T1 and T2 and T3) across sociodemographic/lifestyle characteristics (e.g. sex, race, regionally, Body Mass Index, and aerobic physical activity).
For the total sample, MSE guideline adherence significantly declined across each study wave (T1 = 57.0%; T2 = 52.0%; T3 = 48.5%; p < 0.001 for linear trend). Population sub-groups less likely to meet the guideline at each wave included females, youth who were underweight or obese, those reporting insufficient aerobic physical activity, those from large urban settings, and youth who identify as Asian.
Among a large sample of Canadian youths, approximately half met the MSE guideline, with this prevalence declining over time. Large-scale MSE interventions are needed to address the low and decreasing adherence to this key modifiable health-related behavior among Canadian youths.
肌肉强化活动（如俯卧撑、仰卧起坐、使用健身器械）对青少年有多种健康益处，是全球儿童和青少年（5 - 17岁）身体活动指南的一部分。然而，在青少年健康监测中很少对肌肉强化活动进行评估。本研究描述了一组加拿大青少年中肌肉强化活动的纵向趋势和预测因素。
纵向研究。
数据来自3366名青少年队列，他们参与了COMPASS的三轮调查，这是一项对加拿大中学生的纵向研究[第一轮（T1）2015/16年，第二轮（T2）2016/17年，第三轮（T3）2018/19年]。计算每一轮中达到肌肉强化活动指南（每周≥3天）的样本患病率。多变量逻辑回归评估了在每一轮（T1、T2和T3）中，根据社会人口统计学/生活方式特征（如性别、种族、地区、体重指数和有氧体育活动）达到肌肉强化活动指南的几率。
对于总样本，在每一轮研究中，肌肉强化活动指南的依从性显著下降（T1 = 57.0%；T2 = 52.0%；T3 = 48.5%；线性趋势p < 0.001）。在每一轮中不太可能达到指南的人群亚组包括女性、体重过轻或肥胖的青少年、报告有氧体育活动不足的青少年、来自大城市的青少年以及认同为亚洲人的青少年。
在一大组加拿大青少年中，约一半人达到了肌肉强化活动指南，且这一患病率随时间下降。需要大规模的肌肉强化活动干预措施，以解决加拿大青少年对这一关键的可改变的健康相关行为的低依从性及依从性下降的问题。
