Tracking of physical activity in young children
作者:
PATE RUSSELL,
BARANOWSKI TOM,
DOWDA MARSHA,
TROST STEWART,
期刊:
Medicine and Science in Sports and Exercise
(OVID Available online 1996)
卷期:
Volume 28,
issue 1
页码: 92-96
ISSN:0195-9131
年代: 1996
出版商: OVID
关键词: EXERCISE;HEART RATE MONITORING;HEALTH;RISK FACTORS
数据来源: OVID
摘要:
The purpose of this study was to determine whether physical activity behavior tracks during early childhood. Forty-seven children (22 males, 25 females) aged 3-4 yr at the beginning of the study were followed over a 3-yr period. Heart rates were measured at least 2 and up to 4 d·yr-1with a Quantum XL Telemetry heart rate monitor. Physical activity was quantified as the percentage of observed minutes between 3:00 and 6:00 p.m. during which heart rate was 50% or more above individual resting heart rate(PAHR-50 Index). Tracking of physical activity was analyzed using Pearson and Spearman correlations. Yearly PAHR-50 index tertiles were created and examined for percent agreement and Cohen's kappa. Repeated measures ANOVA was used to calculate the intraclass correlation coefficient across the 3 yr of the study. Spearman rank order correlations ranged from 0.57 to 0.66 (P< 0.0001). Percent agreement ranged from 49% to 62%. The intraclass R for the 3 yr was 0.81. It was concluded that physical activity behavior tends to track during early childhood.
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