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首页> 美国卫生研究院文献>Preventive Medicine Reports >Trajectories of body mass index among active-duty U.S. Army soldiers 2011–2014
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Trajectories of body mass index among active-duty U.S. Army soldiers 2011–2014

机译：2011-2014年在役美军士兵的体重指数轨迹

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Establishing the shape and determinants of trajectories of body mass index (BMI) among Soldiers is critical given the importance of weight management to military service requirements. To establish the shape and determinants of BMI trajectories among Soldiers, we aimed to (1) model the overall BMI trajectory of Soldiers, (2) find the most common trajectory groups among Soldiers, (3) investigate the relationship between BMI trajectories and sociodemographic and military-specific characteristics, and (4) determine if there were Soldiers with large fluctuations in BMI. The study population included all US Army Soldiers on active-duty between 2011 and 2014 who were age 17–62 (n = 827,126). With longitudinal data from the Stanford Military Data Repository, we used group-based trajectory modeling to identify the BMI trajectories of Soldiers and multinomial logistic regression to estimate associations between Soldier characteristics and trajectory membership. Four distinct BMI trajectory groups were found: increasing, decreasing, constant, and inconstant. The constant, increasing, and decreasing trajectories were similar in shape and percentage between men and women. The constant trajectory had the fewest Soldiers who exceeded weight standards or had duty limitations. The increasing trajectory was associated with marriage and fewer service years. The decreasing trajectory was associated with more service years and higher educational attainment. The inconstant trajectory differed in shape between men and women. Over 6% of men and 12% of women had fluctuations in BMI indicative of weight cycling. Understanding the characteristics associated with BMI trends may assist the Army in targeting resources aimed to improve Soldier health and combat readiness.
机译：考虑到体重管理对服役需求的重要性，在士兵中建立体重指数（BMI）轨迹的形状和决定因素至关重要。为了建立士兵之间BMI轨迹的形状和决定因素，我们旨在（1）对士兵的总体BMI轨迹建模，（2）找到士兵中最常见的轨迹组，（3）研究BMI轨迹与社会人口统计学之间的关系，以及（4）确定是否有士兵的BMI波动较大。研究人群包括2011年至2014年在职的所有美军士兵，年龄在17-62岁之间（n = 827,126）。利用来自斯坦福军事数据存储库的纵向数据，我们使用基于组的轨迹模型来识别士兵的BMI轨迹和多项式逻辑回归来估计士兵特征与轨迹成员之间的关联。发现了四个不同的BMI轨迹组：增加，减少，恒定和不恒定。男女之间形状，百分比的恒定，增加和减少的轨迹相似。恒定的轨迹是超过重量标准或有工作限制的士兵最少。不断增长的轨迹与婚姻和较少的服务年限有关。轨迹的减少与服务年限的增加和受教育程度的提高有关。男女之间的轨迹不一。超过6％的男性和12％的女性的BMI出现波动，表明体重循环。了解与BMI趋势相关的特征可能有助于陆军确定旨在改善士兵健康状况和战备状态的资源。

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