Department of Preventive Medicine and Public Health, University of Granada, Avenida de Madrid, 11, 18071 Granada, Spain.
Matern Child Health J. 2013 May;17(4):632-8. doi: 10.1007/s10995-012-1038-3.
To quantify changes in leisure time physical activity (LTPA) type, frequency, duration and intensity during the first half of pregnancy as compared with the year prior to pregnancy. A cross sectional study was conducted at the Maternal University Hospital in Granada, Spain. A total of 1,175 healthy pregnant women attending a scheduled visit during the 20-22nd gestational week were enrolled in the study. Information about socio-demographic, obstetric and life-style variables during the previous year and the first half of pregnancy were collected. LTPA was quantified by assigning metabolic equivalents to each activity according to frequency, intensity and duration. The prevalence of women who met the optimal physical activity recommendations before and during pregnancy was calculated, and the McNemar-Bowker symmetry test was used to assess changes in type, frequency, intensity and duration of activities between the two periods. Some sort of LTPA was performed before and during pregnancy by 68.6% of the pregnant women. Respectively, just 27.5% and 19.4% of women fulfilled LTPA recommendations prior to pregnancy and during pregnancy; 12.6% of the women meeting recommendations prior to pregnancy later did not meet those recommendations during gestation, and 4.5% showed the reverse trend. A light increase in walking as a LTPA, and a decrease in the rest of the LTPA type activities, were seen during pregnancy. Some 13.4% of women changed from moderate--the year before- to light LTPA- during pregnancy. Pregnancy involved a decrease in LTPA, not only regarding frequency, but also duration and intensity.
定量比较妊娠前半年与妊娠前一年休闲时间体力活动（LTPA）类型、频率、持续时间和强度的变化。本研究在西班牙格拉纳达的圣母大学医院进行，采用横断面研究方法。共纳入 1175 名在妊娠 20-22 周期间定期就诊的健康孕妇。收集了孕妇在过去一年和妊娠前半年的社会人口统计学、产科和生活方式变量的信息。根据频率、强度和持续时间，将每种活动的代谢当量分配给 LTPA。计算了在妊娠前和妊娠期间符合最佳体力活动建议的女性比例，并使用 McNemar-Bowker 对称检验评估两个时期活动类型、频率、强度和持续时间的变化。68.6%的孕妇在妊娠前和妊娠期间进行了某种形式的 LTPA。分别只有 27.5%和 19.4%的女性在妊娠前和妊娠期间符合 LTPA 建议；12.6%在妊娠前符合建议的女性后来不符合这些建议，4.5%则呈现相反的趋势。在妊娠期间，作为 LTPA 的步行有所增加，而其余的 LTPA 类型活动则有所减少。约 13.4%的女性从妊娠前的中度 LTPA 转变为妊娠期间的轻度 LTPA。妊娠不仅降低了 LTPA 的频率，而且降低了其持续时间和强度。
