1.中山大学附属第一医院妇产科,广东 广州,510080
2.香港大学李嘉诚医学院公共卫生学院,香港,999077
3.香港城市大学传染病及公共卫生学系,香港,999077
陈汉青,博士,副主任医师,研究方向:妊娠期糖尿病,E-mail:chenhanq@mail.sysu.edu.cn
收稿:2022-02-28,
纸质出版:2022-09-20
移动端阅览
陈汉青,张嘉鹏,明伟杰等.基于加速传感器评估达到孕期活动推荐量的步数阈值分析[J].中山大学学报(医学科学版),2022,43(05):788-794.
CHEN Han-qing,ZHANG Casper J.P.,MING Wai-kit,et al.Analysis of Daily Steps Threshold Corresponding to Pregnancy Physical Activity Recommendation Based on Accelerometer[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(05):788-794.
陈汉青,张嘉鹏,明伟杰等.基于加速传感器评估达到孕期活动推荐量的步数阈值分析[J].中山大学学报(医学科学版),2022,43(05):788-794. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0513.
CHEN Han-qing,ZHANG Casper J.P.,MING Wai-kit,et al.Analysis of Daily Steps Threshold Corresponding to Pregnancy Physical Activity Recommendation Based on Accelerometer[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(05):788-794. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0513.
目的
2
应用加速传感器客观评估单胎孕妇的日常活动量和步数,初步探讨符合孕期活动推荐量的每天步数阈值,为孕期活动指导提供参考。
方法
2
纳入2018年4月至2019年9月在中山大学附属第一医院产检的单胎孕妇,共178例,年龄为(30.0±3.0)岁。用加速传感器分别监测妊娠三个阶段的日常活动量各7 d。用配套软件下载数据并用线性相关分析日常活动量(总活动、轻度活动和中等强度活动)与每日步数的关系;用线性回归分析和受试者工作特征曲线(ROC)分析符合孕期活动推荐量的每天步数阈值。
结果
2
每日总活动时间、久坐活动时间、轻度活动时间以及每日步数妊娠三个阶段相比的差异均无统计学意义(
P
均>0.05);平均每天中等强度活动时间随妊娠阶段增加而显著减少(25.1±16.1
vs.
23.6±16.5
vs.
21.5±16.1,min/d,
P
= 0.001)。线性相关分析显示孕期每日步数与日常总活动量呈正相关(妊娠早期、妊娠中期和妊娠晚期的相关系数
r
分别为0.87,0.83和0.86,
P
均<0.001);与轻度活动有正相关(妊娠早期、妊娠中期和妊娠晚期的相关系数
r
分别为0.79,0.72和0.77,
P
均<0.001);与中等强度活动也有正相关(妊娠早期、妊娠中期和妊娠晚期的相关系数
r
分别为0.62,0.53和0.55,
P
均<0.001)。线性回归分析计算达到孕期活动推荐量的每日步数阈值妊娠早期、妊娠中期和妊娠晚期分别为10 925步、11 372步和11 170步;ROC分析计算达到孕期活动推荐量的每日步数阈值妊娠三个阶段则分别为10 856步、10 480步和9 819步,曲线下面积分别为0.81、0.73和0.74(
P
均<0.001)。
结论
2
孕妇日常活动以步行为主。基于加速传感器评估的每天步行9 800步~11 500步可达到孕期活动推荐量。
Objectives
2
This study aims to use accelerometer to objectively evaluate daily physical activity (PA) and steps of single pregnant women, and preliminarily explore the threshold of daily steps in line with the recommended PA during pregnancy, so as to provide PA guidance for pregnant women.
Methods
2
Women with singleton pregnancies who had prenatal examination in the the First Affiliated Hospital of Sun Yat-sen University from April 2018 to September 2019 continuously wore an accelerometer for 7 days for three times to measure daily PA. A total of 178 cases were included in this study with the average age 30.0 ± 3.0 years. Data were downloaded by supporting software, and the relationship between daily steps and PA (total PA, light PA and moderate PA) were analyzed by linear correlation analysis. Linear regression analysis and receiver operator characteristic curve (ROC) analysis were both used to explore the threshold steps corresponding to the physical activity recommendation.
Results
2
There was no difference in daily total PA, light PA and sedentary behavior time during the three trimesters (
P
>
0.05). But the moderate PA decreased with the pregnancy stages increased (25.1±16.1
vs.
23.6±16.5
vs.
21.5±16.1,min/d,
P
= 0.001). There was a positive correlation between total PA and daily steps during the three trimesters (The correlation coefficients
r
of the early pregnancy, mid pregnancy and late pregnancy were 0.87, 0.83 and 0.86, respectively,
P
<
0.001); and there was a positive correlation with light PA (
r
of the three trimesters were 0.79, 0.72 and 0.77, respectively,
P
<
0.001). The relationship between moderate PA and daily steps during the three trimesters also had similar results (
r
of the three trimesters were 0.62, 0.53 and 0.55, respectively,
P
<
0.001). The thresholds of daily steps to reach the recommended PA during pregnancy in the early, mid and late pregnancy were 10 925 steps, 11 372 steps and 11 170 steps, respectively. According to ROC analysis, the thresholds of daily steps in the three trimesters were 10 856 steps, 10 480 steps and 9 819 steps, respectively, and the areas under the curve were 0.81, 0.73 and 0.74, respectively (
P
<
0.001).
Conclusions
2
The daily physical activity is mainly walking during pregnancy. Based on accelerometer evaluation, daily walking 9 800 to 11 500 steps could reach the physical activity recommendation during pregnancy.
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