Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK.
BMC Pregnancy Childbirth. 2010 Nov 29;10:76. doi: 10.1186/1471-2393-10-76.
Obese and overweight women may benefit from increased physical activity (PA) during pregnancy. There is limited published data describing objectively measured PA in such women.
A longitudinal observational study of PA intensity, type and duration using objective and subjective measurement methods. Fifty five pregnant women with booking body mass index (BMI) ≥ 25 kg/m2 were recruited from a hospital ultrasound clinic in North East England. 26 (47%) were nulliparous and 22 (40%) were obese (BMI ≥ 30 kg/m2). PA was measured by accelerometry and self report questionnaire at 13 weeks, 26 weeks and/or 36 weeks gestation. Outcome measures were daily duration of light, moderate or vigorous activity assessed by accelerometry; calculated overall PA energy expenditure, (PAEE), and PAEE within four domains of activity based on self report.
At median 13 weeks gestation, women recorded a median 125 mins/day light activity and 35 mins/day moderate or vigorous activity (MVPA). 65% achieved the minimum recommended 30 mins/day MVPA. This proportion was maintained at 26 weeks (62%) and 36 weeks (71%). Women achieving more than 30 mins/day MVPA in the first trimester showed a significant reduction in duration of MVPA by the third trimester (11 mins/day, p = 0.003). Walking, swimming and floor exercises were the most commonly reported recreational activities but their contribution to estimated energy expenditure was small.
Overweight and obese pregnant women can achieve and maintain recommended levels of PA throughout pregnancy. Interventions to promote PA should target changes in habitual activities at work and at home, and in particular walking.
肥胖和超重的女性可能会从怀孕期间增加身体活动（PA）中受益。关于这些女性的身体活动的客观测量数据有限。
使用客观和主观测量方法对 PA 强度、类型和持续时间进行纵向观察研究。从英格兰东北部一家医院的超声诊所招募了 55 名初诊身体质量指数（BMI）≥25kg/m2 的孕妇。其中 26 名（47%）为初产妇，22 名（40%）为肥胖（BMI≥30kg/m2）。PA 通过加速度计和自我报告问卷在 13 周、26 周和/或 36 周妊娠时进行测量。测量结果是通过加速度计评估的轻、中或高强度活动的日常持续时间；根据自我报告计算出整体 PA 能量消耗（PAEE）以及基于活动的四个领域的 PAEE。
在妊娠 13 周的中位数时，女性记录的轻活动中位数为 125 分钟/天，中或高强度活动中位数为 35 分钟/天（MVPA）。65%的人达到了 30 分钟/天的最低推荐 MVPA。这一比例在 26 周（62%）和 36 周（71%）时保持不变。在孕早期达到 30 分钟/天以上 MVPA 的女性在孕晚期 MVPA 的持续时间显著减少（11 分钟/天，p=0.003）。散步、游泳和地板运动是最常报告的娱乐活动，但它们对估计能量消耗的贡献很小。
超重和肥胖的孕妇可以在整个怀孕期间达到并保持推荐的 PA 水平。促进 PA 的干预措施应针对工作和家庭中的习惯性活动的变化，特别是步行。
