Advanced pubertal status at age 11 and lower physical activity in adolescent girls
Advanced pubertal status at age 11 and lower physical activity in adolescent girls
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DOI：
10.1016/j.jpeds.2007.04.017
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发表时间：
2007-11-01
影响因子：
5.1
通讯作者：
Davison, Kirsten Krahnstoever
中科院分区：
文献类型：
--
作者：
Baker, Birgitta L.;Birch, Leann L.;Davison, Kirsten Krahnstoever
目的探讨青春期的时间和体力活动之间的关系。研究设计一个纵向样本的143个青春期女孩在11岁和13岁进行了评估。女孩的青春期发育在11岁时通过血液雌二醇水平、坦纳乳房分期标准和父母青春期发育报告进行评估。女孩被归类为早熟（n = 41）或晚熟（n = 102）的基础上，他们的分数在3青春期发育措施。在13岁时测量的因变量是平均分钟/天的中度到剧烈和剧烈的身体活动所测得的ActiGraph accelerometer.Results早熟女孩有显着降低自我报告的身体活动和积累更少分钟的中度到剧烈和剧烈的身体活动和加速度计计数，每天在13岁比晚熟女孩。这些影响V-结论11岁青春期早熟的女孩13岁时的身体活动量低于11岁青春期早熟的女孩。青春期成熟，特别是相对于同龄人的早熟，可能导致少女体力活动的减少。
Objective To examine the relationship between pubertal timing and physical activity.Study design A longitudinal sample of 143 adolescent girls was assessed at ages 11 and 13 years. Girls' pubertal development was assessed at age 11 with blood estradiol levels, Tanner breast staging criteria, and parental report of pubertal development. Girls were classified as early maturers (n = 41) or later maturers (n = 102) on the basis of their scores on the 3 pubertal development measures. Dependent variables measured at age 13 were average minutes/day of moderate to vigorous and vigorous physical activity as measured by the ActiGraph accelerometer.Results Early-maturing girls had significantly lower self-reported physical activity and accumulated fewer minutes of moderate to vigorous and vigorous physical activity and accelerometer counts per day at age 13 than later maturing girls. These effects v.-ere independent of differences in percentage body fat and self-reported physical activity at age 11.Conclusion Girls experiencing early pubertal maturation at age 11 reported lower subsequent physical activity at age 13 than their later maturing peers. Pubertal maturation, in particular early maturation relative to peers, may lead to declines in physical activity among adolescent girls.