Total energy expenditure and physical activity as assessed by the doubly labeled water method in Swedish adolescents in whom energy intake was underestimated by 7-d diet records
Total energy expenditure and physical activity as assessed by the doubly labeled water method in Swedish adolescents in whom energy intake was underestimated by 7-d diet records
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DOI：
10.1093/ajcn/67.5.905
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发表时间：
1998-05-01
影响因子：
7.1
通讯作者：
Samuelson, G
中科院分区：
文献类型：
--
作者：
Bratteby, LE;Sandhagen, B;Samuelson, G
瑞典的儿童和青少年可能采取久坐不动的生活方式，能量消耗和摄入量较低，但没有量化数据可用。本研究的目的是调查50名15岁的青少年，用双标记水法和间接量热法评估总能量消耗(TEE)和体力活动水平(PAL)，以及通过7天饮食记录估计能量摄入量是否表明身体活动不足。男孩(n=25)的平均体重是1976年瑞典参考值的112%，女孩(n=25)的平均体重是瑞典参考值的109%；男孩和女孩的平均身高是参考值的102%。男生和女生的平均TEE分别为13.82+/-1.90和10.70+/-1.59MJ/d，平均PAL(TEE/基础代谢率)分别为1.89+/-0.16和1.79+/-0.22，与其他已发表研究的相应数据相比，差异无统计学意义。平均能量摄入量占TEE的百分比，男生为81.9+/-17.9%，女生为78.3+/-16.4%。能量摄入量占TEE的百分比和体脂百分比以及能量摄入量占TEE酸性体重指数的百分比之间都存在显着的负相关。这些结果进一步证明，7-d饮食记录低估了青少年的能量摄入量，特别是那些有超重和体脂增加倾向的青少年。这一结果支持了瑞典青少年体重和身高增加的趋势，但与低体力活动、低能量消耗和低能量摄入的假设相矛盾。这些结果支持了这样一种观点，即目前对青春期能量摄入量的建议太低。
Swedish children and adolescents may be adopting a sedentary lifestyle with low energy expenditures and intakes, but no quantitative data are available. The purpose of the present study in 50 adolescents aged 15 y was to investigate whether assessment of total energy expenditure (TEE) and physical activity level (PAL) by the doubly labeled water method and indirect calorimetry and estimation of energy intake by a 7-d diet record would indicate physical inactivity. The boys' (n = 25) mean weight was 112% and the girls' (n = 25) was 109% of Swedish reference values from 1976; the mean height of both boys and girls was 102% of those reference values. Mean TEE in the boys and girls, 13.82 +/- 1.90 and 10.70 +/- 1.59 MJ/d, and mean PAL (TEE/basal metabolic rate), 1.89 +/- 0.16 and 1.79 +/- 0.22, respectively, were nonsignificantly higher than corresponding figures from other published studies. Mean energy intake as a percentage of TEE was 81.9 +/- 17.9% in the boys and 78.3 +/- 16.4% in the girls. Significant negative correlations were found both between energy intake as a percentage of TEE and percentage body fat and between energy intake as a percentage of TEE acid body mass index. These results add to the evidence that 7-d diet records underestimate energy intake in adolescents, particularly those with a tendency for overweight and increased body fat. The results support indications of a trend of increasing body weight and height in Swedish adolescents, but conflict with the presumptions of low physical activity, low energy expenditure, and low energy intake. These results support the view that current recommendations for energy intake during adolescence are too low.