Brown Wendy J, Trost Stewart G
School of Human Movement Studies, University of Queensland, St. Lucia, Queensland 4072, Australia.
Am J Prev Med. 2003 Aug;25(2):140-3. doi: 10.1016/s0749-3797(03)00119-3.
Physical activity (PA) patterns are likely to change in young adulthood in line with changes in lifestyle that occur in the transition from adolescence to adulthood. The aim of this study was to ascertain whether key life events experienced by young women in their early twenties are associated with increasing levels of inactivity.
This was a 4-year follow-up of 7281 participants (aged 18 to 23 years at baseline) in the Australian Longitudinal Study of Women's Health, with self-reported measures of PA, life events, body mass index (BMI), and sociodemographic variables.
The cross-sectional data indicated no change in PA between baseline (57% "active") and follow-up (56% "active"). However, for almost 40% of the sample, PA category changed between baseline and follow-up, with approximately 20% of the women changing from being "active" to "inactive," and another 20% changing from being "inactive" to "active." After adjustment for age, other sociodemographic variables, BMI, and PA at baseline, women who reported getting married, having a first or subsequent child, or beginning paid work were more likely to be inactive at follow-up than those who did not report these events.
The results suggest that life events such as getting married, having children, and starting work are associated with decreased levels of PA in young adult women. Strategies are needed to promote maintenance of activity at the time when most women experience these key life-stage transitions.
随着从青春期到成年期生活方式的变化，青年时期的身体活动（PA）模式可能会发生改变。本研究的目的是确定二十出头的年轻女性所经历的关键生活事件是否与身体活动水平降低有关。
这是对澳大利亚妇女健康纵向研究中7281名参与者（基线年龄为18至23岁）进行的4年随访，采用自我报告的身体活动、生活事件、体重指数（BMI）和社会人口统计学变量测量方法。
横断面数据显示，基线时（57%“活跃”）和随访时（56%“活跃”）的身体活动没有变化。然而，对于近40%的样本，基线和随访之间身体活动类别发生了变化，约20%的女性从“活跃”变为“不活跃”，另有20%的女性从“不活跃”变为“活跃”。在对年龄、其他社会人口统计学变量、BMI和基线时的身体活动进行调整后，报告结婚、生育头胎或后续子女或开始从事有偿工作的女性在随访时比未报告这些事件的女性更有可能不活跃。
结果表明，结婚、生育和开始工作等生活事件与年轻成年女性身体活动水平降低有关。在大多数女性经历这些关键生命阶段转变时，需要采取策略来促进身体活动的维持。
