Is TV viewing an index of physical activity and fitness in overweight and normal weight children?

Public Health Nutrition

MJ Müller¹  M Siewers¹  H Rieckert¹  H Krause¹  A Grund¹ 

关键词: Physical inactivity;    Activity;    Energy expenditure;    Childhood obesity;    Childhood nutrition;   

DOI  :  10.1079/PHN2001178

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

Objective:To assess relationships between TV viewing and body composition, energy expenditure, physical activity, fitness and nutrition habits in prepubertal children.Design:Cross-sectional study.Subjects:Sixty prepubertal children (mean body mass index: 20.8 kg m−2, age: 5–11 years, overweight: n=52, normal weight: n=8).Methods:TV consumption, socio-economic status (SES) and nutrition habits were estimated by questionnaires. Fat mass and fat-free mass were assessed by anthropometrics and bioelectrical impedance analysis, and resting energy expenditure by indirect calorimetry. Total energy expenditure was measured by a combination of indirect calorimetry and individually calibrated 24-hour heart rate (HR) monitoring. Activity-related energy expenditure and physical activity level were calculated. Aerobic fitness (VO2 submax) was determined by ergometry, muscle strength (musculus quadriceps, musculus ischiocruralis) was measured by computer tensiometry. Children were stratified according to their daily TV consumption: 1 h of TV per day (group II).Results:When compared with children of group I, children of group II had increased body weight, body mass index, skinfolds, fat mass and prevalence of overweight (P

【 授权许可】

Unknown