推荐欧洲青少年避免体脂过多的身体活动水平： HELENA 研究。

Recommended levels of physical activity to avoid an excess of body fat in European adolescents: the HELENA Study.

机构信息

Unit for Preventive Nutrition, Department of Biosciences and Nutrition at Novum, Karolinska Institute, Huddinge, Sweden.

出版信息

Am J Prev Med. 2010 Sep;39(3):203-11. doi: 10.1016/j.amepre.2010.05.003.

DOI:10.1016/j.amepre.2010.05.003

PMID:20709251

Abstract

BACKGROUND

It is unclear how much physical activity is necessary to prevent obesity during adolescence.

PURPOSE

The purpose of this study was to examine whether the current physical activity guidelines for youth are associated with a lower risk of excess of body fat in European adolescents.

METHODS

A sample of 2094 adolescents from the HELENA cross-sectional study was selected. Levels of moderate, vigorous, and moderate to vigorous physical activity (MVPA) were assessed using accelerometers. BMI and percentage of body fat (skinfolds) were calculated and used to categorize the adolescents as normal-weight/normal-fat, overweight/overfat, and obese. Data were collected during 2006-2007. Receiver operating characteristic (ROC) analysis, performed in 2009, was used to determine thresholds that best discriminate between weight and body fat categories.

RESULTS

ROC analysis showed that >/=18 minutes/day in vigorous physical activity and >/=55 minutes/day in MVPA significantly discriminated between normal-weight and overweight+obesity categories. Moreover, >/=9 minutes/day of vigorous physical activity and >/=49 minutes/day of MVPA discriminated between normal-fat and overfat/obese adolescents. Adolescents who did not meet the current physical activity guidelines for youth of 60 minutes/day in MVPA increased the risk of having overweight+obesity (OR=1.24, 95% CI=1.01, 1.534) and overfat+obesity (OR=1.79, 95% CI=1.33, 2.42). ORs increased when adolescents did not meet the guidelines of at least 15 minutes/day in vigorous physical activity.

CONCLUSIONS

Current physical activity guidelines seem to be appropriate to prevent excess of body fat in European adolescents. However, participation in vigorous physical activity might have additional importance in preventing obesity.

摘要

背景

目前尚不清楚青少年时期需要进行多少体力活动才能预防肥胖。

目的

本研究旨在检验目前针对青少年的体力活动指南是否与降低欧洲青少年体脂肪过多的风险相关。

方法

选择了 HELENA 横断面研究的 2094 名青少年作为样本。使用加速度计评估中等到剧烈、以及中等到剧烈的体力活动（MVPA）水平。计算 BMI 和体脂肪百分比（皮褶），并将青少年分类为正常体重/正常脂肪、超重/肥胖和肥胖。数据于 2006-2007 年收集。2009 年进行的接收器工作特征（ROC）分析用于确定最佳区分体重和体脂类别的阈值。

结果

ROC 分析表明，每天进行> = 18 分钟剧烈体力活动和> = 55 分钟 MVPA 可显著区分正常体重和超重+肥胖类别。此外，每天进行> = 9 分钟剧烈体力活动和> = 49 分钟 MVPA 可区分正常脂肪和肥胖/超重青少年。不符合当前青少年 60 分钟/天 MVPA 体力活动指南的青少年，超重+肥胖的风险增加（OR=1.24，95%CI=1.01，1.534）和肥胖+肥胖（OR=1.79，95%CI=1.33，2.42）。当青少年每天不进行至少 15 分钟剧烈体力活动时，OR 增加。