Watson Estelle D, Van Poppel Mireille N M, Jones Rachel A, Norris Shane A, Micklesfield Lisa K
J Phys Act Health. 2017 May;14(5):329-335. doi: 10.1123/jpah.2016-0388. Epub 2017 Feb 7.
Although physical activity during pregnancy may be beneficial, the prenatal period is a vulnerable time for decreasing physical activity levels and increasing sedentary time.
This longitudinal cohort study measured physical activity using the Global Physical Activity Questionnaire (GPAQ) in singleton, pregnant women in the second (14-18 wk gestation; n = 332) and third trimester (29-33 wk; n = 256).
There was a significant decrease in total MVPA (MET mins/wk) between the second and third trimester (P = .01). The majority of physical activity time was spent in walking for transport (80%), and less than 2% in recreational activities. In both trimesters, being married was inversely associated with walking for transport (second trimester: β = -0.12 95% CI = -0.31 to -0.02, third trimester: β = -0.17 95% CI = -0.47 to -0.07) and owning a car was positively associated with recreational physical activity (second trimester: β = 0.16 95% CI = 0.02 to 0.32, third trimester: β = 0.17 95% CI = 0.04 to 0.27). The women spent an average of 5 hours per day sitting.
The low and declining levels of physical activity during pregnancy in this population are a concern. Interventions that include lifestyle education and provision of accessible recreational physical activity programs for pregnant women are needed.
尽管孕期进行体育活动可能有益，但孕期是身体活动水平下降和久坐时间增加的脆弱时期。
这项纵向队列研究使用全球身体活动问卷（GPAQ）对单胎妊娠的孕妇在孕中期（妊娠14 - 18周；n = 332）和孕晚期（29 - 33周；n = 256）的身体活动进行了测量。
孕中期和孕晚期之间，总中度至剧烈身体活动量（代谢当量分钟/周）显著下降（P = 0.01）。大部分身体活动时间用于步行外出（80%），用于娱乐活动的时间不到2%。在两个孕期，已婚与步行外出呈负相关（孕中期：β = -0.12，95%置信区间 = -0.31至 -0.02；孕晚期：β = -0.17，95%置信区间 = -0.47至 -0.07），拥有汽车与娱乐性身体活动呈正相关（孕中期：β = 0.16，95%置信区间 = 0.02至0.32；孕晚期：β = 0.17，95%置信区间 = 0.04至0.27）。这些女性平均每天久坐5小时。
该人群孕期身体活动水平较低且呈下降趋势，令人担忧。需要开展包括生活方式教育以及为孕妇提供便捷的娱乐性身体活动项目在内的干预措施。
