Rousham E K, Clarke P E, Gross H
Department of Human Sciences, Loughborough University, Loughborough, Leicestershire, UK.
Eur J Clin Nutr. 2006 Mar;60(3):393-400. doi: 10.1038/sj.ejcn.1602329.
Research on the impact of maternal physical activity on pregnancy outcomes has often employed subjective measures of physical activity obtained by diary or questionnaire. This study investigates the feasibility of using accelerometry as an objective measure of physical activity of pregnant women compared with subjective data obtained via activity recall among pregnant women.
Activity data were collected prospectively on 57 women at 12, 16, 25, 34 and 38 weeks of gestation. Total daily physical activity was assessed by ambulatory accelerometer and activity interview (self-report). Maternal personality variables (health value, extroversion) were assessed by established scales.
Leicestershire, UK.
Pregnant women were recruited by voluntary participation via antenatal booking clinics. In all, 64 pregnant women with low-risk pregnancy were enrolled onto the study, of whom 57 completed the study.
Mean 24 h physical activity levels (PAL) decreased significantly from second to third trimester as assessed by self-report interview (1.51-1.29 Metabolic Equivalent TEE-h/day, P<0.01) and accelerometry (200.05-147.42 counts/min, P<0.01). The correlation between the two measures declined as pregnancy progressed (r value ranging from 0.55 to 0.08). Compliance with the accelerometers declined from 90% at 12 weeks to 47% at 34 weeks (P<0.01). Compliance with the self-report interviews was 100%. Those who fully complied with the accelerometry demonstrated a significantly higher health value (P<0.05) and a significantly greater level of extroversion (P<0.05) than those who did not.
Accelerometers and self-reported activity interviews both indicated a significant decline in PAL during pregnancy. Although subjects showed a willingness to use both methods, accelerometers resulted in variable compliance with 72 h monitoring. Both techniques may be limited by the need to measure low levels of physical activity during the third trimester.
Cambridge Neurotechnology Ltd, UK, assisted with the provision of Actiwatch accelerometers.
关于孕妇身体活动对妊娠结局影响的研究，常常采用通过日记或问卷获得的身体活动主观测量方法。本研究调查了与通过孕妇活动回忆获得的主观数据相比，使用加速度计作为孕妇身体活动客观测量方法的可行性。
前瞻性收集了57名孕妇在妊娠12周、16周、25周、34周和38周时的活动数据。通过动态加速度计和活动访谈（自我报告）评估每日总身体活动量。通过既定量表评估孕妇的个性变量（健康价值观、外向性）。
英国莱斯特郡。
通过产前预约诊所自愿参与招募孕妇。总共64名低风险妊娠孕妇被纳入研究，其中57名完成了研究。
通过自我报告访谈评估（1.51 - 1.29代谢当量总能量消耗/天，P<0.01）以及加速度计评估（200.05 - 147.42计数/分钟，P<0.01），从孕中期到孕晚期，平均24小时身体活动水平（PAL）显著下降。随着妊娠进展，两种测量方法之间的相关性下降（r值范围从0.55到0.08）。加速度计的依从性从12周时的90%下降到34周时的47%（P<0.01）。自我报告访谈的依从性为100%。完全依从加速度计测量的孕妇比未依从的孕妇表现出显著更高的健康价值观（P<0.05）和显著更高的外向性水平（P<0.05）。
加速度计和自我报告的活动访谈均表明孕期PAL显著下降。尽管受试者愿意使用这两种方法，但加速度计在72小时监测中的依从性存在差异。两种技术可能都受到孕晚期测量低水平身体活动需求的限制。
英国剑桥神经技术有限公司协助提供Actiwatch加速度计。
