Institute of Physical Education and Training, Capital University of Physical Education and Sports, Beijing, China.
College of Physical Education, Hunan University of Science and Technology, Xiangtan, Hunan, China.
Complement Ther Clin Pract. 2024 Nov;57:101910. doi: 10.1016/j.ctcp.2024.101910. Epub 2024 Oct 11.
Sedentary behavior (SB) and physical activity (PA) are crucial factors influencing health outcomes in overweight children and adolescents. However, recent changes in SB and PA trends among U.S. overweight youth have not been well described, limiting the development of evidence-based clinical and public health interventions.
Serial, cross-sectional analyses were conducted using data from the National Survey of Children's Health (NSCH) on U.S. overweight youth aged 6-17 years, spanning from 2018 to 2022. Linear regression models were employed to analyze time trends, with survey year as the exposure and recreational screen time (ST), adherence to the ≤2 h/day ST guideline, and adherence to the ≥1 h/day PA guideline as the outcomes. Multivariable-adjusted logistic and linear regressions were used to evaluate trends, adjusting for age group, sex, race/ethnicity, household income, and the highest education level of primary caregivers.
Data from 11,865 individuals (mean age 12.3 years [SD 2.9]; 6417 [52.3 %] girls) were analyzed. From 2018 to 2022, the average ST duration among overweight youth increased from 3.7 h to 4.1 h per day, a statistically significant increase (p = 0.07). The estimated prevalence of overweight youth meeting the ≤2 h/day ST guideline decreased from 44.6 % to 30.0 % (p = 0.007). Additionally, the prevalence of meeting the ≥1 h/day PA guideline remained low and stable, ranging from 8.4 % to 12.3 % during the analysis period (p = 0.6).
In this nationally representative sample of U.S. overweight youth, ST increased by nearly 0.4 h/day over the five-year observation period, while adherence to the ≤2 h/day ST guideline decreased. Adherence to the ≥1 h/day PA guideline remained consistently low. These patterns were consistent across sociodemographic subgroups (age group, sex, ethnicity, and household income). These findings underscore the need for enhanced public health initiatives targeting U.S. youth to reduce recreational screen time and promote a physically active lifestyle.
久坐行为 (SB) 和身体活动 (PA) 是影响超重儿童和青少年健康结果的关键因素。然而，美国超重青少年中 SB 和 PA 趋势的最新变化尚未得到很好的描述，限制了基于证据的临床和公共卫生干预措施的制定。
使用 2018 年至 2022 年期间美国超重儿童的全国儿童健康调查 (NSCH) 数据进行连续、横断面分析。线性回归模型用于分析时间趋势，以调查年份为暴露因素，以娱乐性屏幕时间 (ST)、遵守 ≤2 小时/天 ST 指南和遵守 ≥1 小时/天 PA 指南为结局。多变量调整的逻辑和线性回归用于评估趋势，调整年龄组、性别、种族/民族、家庭收入和主要照顾者的最高教育水平。
共分析了 11865 名个体的数据（平均年龄 12.3 岁 [SD 2.9]；6417 [52.3%] 名女孩）。从 2018 年到 2022 年，超重青少年的平均 ST 时间从每天 3.7 小时增加到 4.1 小时，呈显著增加趋势（p=0.07）。符合 ≤2 小时/天 ST 指南的超重青少年的估计患病率从 44.6%下降到 30.0%（p=0.007）。此外，符合 ≥1 小时/天 PA 指南的患病率仍然较低且稳定，在分析期间范围在 8.4%至 12.3%之间（p=0.6）。
在这项具有全国代表性的美国超重青少年样本中，ST 在五年观察期间每天增加了近 0.4 小时，而遵守 ≤2 小时/天 ST 指南的比例下降。遵守 ≥1 小时/天 PA 指南的比例一直很低。这些模式在社会人口统计学亚组（年龄组、性别、种族和家庭收入）中是一致的。这些发现强调了需要加强针对美国青少年的公共卫生倡议，以减少娱乐性屏幕时间并促进积极的生活方式。
