Taylor Katie S, Tattan-Birch Harry, Danka Martin N, Wright Liam, Iob Eleonora, Fancourt Daisy, Kelly Yvonne
Department of Epidemiology and Public Health, University College London, WC1E 7HB, London, UK.
Department of Behavioural Science and Health, University College London, WC1E 7HB, London, UK.
SSM Popul Health. 2025 Jan 16;29:101756. doi: 10.1016/j.ssmph.2025.101756. eCollection 2025 Mar.
To investigate whether adolescent social connections influence body mass index (BMI) trajectories into adulthood and explore whether associations are moderated by gender, ethnicity or age.
Data came from 17,719 American adolescents in grades 7-12 at baseline (1994-95) from the National Longitudinal Study of Adolescent to Adult Health. Growth curve models tested associations between baseline social connections and BMI trajectories from waves II-V including interactions for gender, ethnicity and age.
Stronger peer connections were associated with flatter BMI trajectories. For example, BMI for those with high peer contact was 0.79 kg/m lower [95% CI -1.20, -0.38] 22 years after baseline, compared to those with low contact. Stronger family connections were associated with steeper trajectories. For example, BMI for those with high family contact was 0.52 kg/m higher [95% CI 0.01, 1.02] 22 years after baseline, compared to those with low contact.
Among adolescents, stronger peer connections were associated with flatter BMI trajectories and stronger family connections with steeper trajectories. Promotion of peer-based interventions could be explored as a strategy to promote healthy weight trajectories.
研究青少年时期的社会关系是否会影响成年后的体重指数（BMI）轨迹，并探讨这种关联是否会因性别、种族或年龄而有所不同。
数据来自美国青少年健康纵向研究，该研究在基线期（1994 - 1995年）对17719名7至12年级的美国青少年进行了调查。生长曲线模型测试了基线期社会关系与第二至五波的BMI轨迹之间的关联，包括性别、种族和年龄的交互作用。
更强的同伴关系与更平缓的BMI轨迹相关。例如，在基线期22年后，同伴接触频繁者的BMI比接触少者低0.79kg/m² [95%置信区间 -1.20, -0.38]。更强的家庭关系与更陡峭的轨迹相关。例如，在基线期22年后，家庭接触频繁者的BMI比接触少者高0.52kg/m² [95%置信区间0.01, 1.02]。
在青少年中，更强的同伴关系与更平缓的BMI轨迹相关，更强的家庭关系与更陡峭的轨迹相关。可以探索推广基于同伴的干预措施，作为促进健康体重轨迹的一种策略。
