Department of Exercise, Nutrition & Health Sciences, Centre for Sport, Exercise & Health, University of Bristol, Tyndall Avenue, Bristol BS8 1TP, UK.
Public Health Nutr. 2010 May;13(5):673-81. doi: 10.1017/S1368980009992151. Epub 2009 Dec 3.
Associations between diet and physical activity may identify behaviours that could be changed together to prevent childhood obesity. The present study examines associations between physical activity and obesogenic dietary behaviours in a large UK adolescent cohort.
Cross-sectional analysis of a UK cohort. Adolescents aged 10-11 years completed three 1 d diet diaries. Average daily energy consumption, percentage energy from fat and carbohydrate, energy density and grams of fruit and vegetables were estimated. To assess physical activity participants wore an accelerometer for three or more days. Regression models were run by sex to examine the extent to which dietary variables predicted physical activity before and after controlling for pubertal status, maternal education and adiposity.
The Avon Longitudinal Study of Parents and Children (ALSPAC), south-west England.
Adolescents who provided diet data at age 10 years and physical activity data at age 11 years.
Among boys, percentage energy from fat was consistently negatively associated with accelerometer-determined indicators of physical activity (standardized beta (beta) = -0.055 to -0.101, P < 0.05) while total energy (beta = 0.066 to 0.091, P < 0.05) and percentage energy from carbohydrate (beta = 0.054 to 0.106, P < 0.05) were positively associated before and after adjustment for confounders. For girls fruit and vegetable intake was consistently positively associated with physical activity (beta = 0.056 to 0.074, P < 0.005). However all associations were weak. Associations were broadly comparable when participants with non-plausible dietary reports were included or excluded from the analyses.
Obesogenic diet and physical activity behaviours were weakly associated, suggesting that interventions should focus on implementing strategies that are independently successful at changing diet or physical activity behaviours either separately or in combination.
饮食和身体活动之间的关联可以确定可以一起改变的行为，以预防儿童肥胖。本研究在一个大型英国青少年队列中检查了身体活动与致肥胖饮食行为之间的关联。
英国队列的横断面分析。10-11 岁的青少年完成了三份 1 天饮食日记。估计平均每日能量消耗、脂肪和碳水化合物的能量百分比、能量密度以及水果和蔬菜的克数。为了评估身体活动，参与者佩戴加速度计三天或更长时间。通过性别运行回归模型，以检查在控制青春期状态、母亲教育和肥胖程度后，饮食变量在多大程度上预测身体活动。
英国西南部的阿冯纵向研究父母和孩子（ALSPAC）。
在 10 岁时提供饮食数据且在 11 岁时提供身体活动数据的青少年。
在男孩中，脂肪的能量百分比与加速度计确定的身体活动指标始终呈负相关（标准化β（β）=-0.055 至-0.101，P<0.05），而总能量（β=0.066 至 0.091，P<0.05）和碳水化合物的能量百分比（β=0.054 至 0.106，P<0.05）在调整混杂因素之前和之后呈正相关。对于女孩，水果和蔬菜的摄入量与身体活动始终呈正相关（β=0.056 至 0.074，P<0.005）。然而，所有关联都很弱。当包括或排除饮食报告不可信的参与者时，关联大致相似。
致肥胖的饮食和身体活动行为之间存在微弱的关联，这表明干预措施应侧重于实施独立成功改变饮食或身体活动行为的策略，无论是单独实施还是联合实施。
