Dataset Information

Association between maternal outdoor physical exercise and the risk of preterm birth: a case-control study in Wuhan, China.

ABSTRACT:

Background

China had the second largest proportion of preterm birth (PTB) internationally. However, only 11% of pregnant women in China meet international guidelines for maternal physical activity, a significantly lower proportion than that in Western countries. This study aims to examine the association between outdoor physical exercise during pregnancy and PTB among Chinese women in Wuhan, China.

Methods

A case-control study was conducted among 6656 pregnant women (2393 cases and 4263 controls) in Wuhan, China from June 2011 to June 2013. Self-reported measures of maternal physical exercise (frequency per week and per day in minutes) were collected. Adjusted odds ratios were estimated using Bayesian hierarchical logistic regression and a generalized additive mixed model (GAMM).

Results

Compared to women not involved in any physical activity, those who participated in physical exercise 1-2 times, 3-4 times, and over five times per week had 20% (aOR: 0.80, 95% credible interval [95% CI]: 0.68-0.92), 30% (aOR: 0.70, 95% CI: 0.60-0.82), and 32% (aOR: 0.68, 95% CI: 0.59-0.78) lower odds of PTB, respectively. The Bayesian GAMM showed that increasing physical exercise per day was associated with lower risk of PTB when exercise was less than 150?min per day; however, this direction of association is reversed when physical exercise was more than 150?min per day.

Conclusion

Maternal physical exercise, at a moderate amount and intensity, is associated with lower PTB risk. More data from pregnant women with high participation in physical exercise are needed to confirm the reported U-shape association between the physical exercise and risk of preterm birth.

SUBMITTER: Cai M

PROVIDER: S-EPMC7955628 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Association between maternal outdoor physical exercise and the risk of preterm birth: a case-control study in Wuhan, China.

Cai Miao M Zhang Bin B Yang Rong R Zheng Tongzhang T Dong Guanghui G Lin Hualiang H Rigdon Steven E SE Xian Hong H Hinyard Leslie L Xaverius Pamela K PK Liu Echu E Burroughs Thomas E TE Jansson Daire R DR LeBaige Morgan H MH Yang Shaoping S Qian Zhengmin Z

BMC pregnancy and childbirth 20210312 1

<h4>Background</h4>China had the second largest proportion of preterm birth (PTB) internationally. However, only 11% of pregnant women in China meet international guidelines for maternal physical activity, a significantly lower proportion than that in Western countries. This study aims to examine the association between outdoor physical exercise during pregnancy and PTB among Chinese women in Wuhan, China.<h4>Methods</h4>A case-control study was conducted among 6656 pregnant women (2393 cases an ...[more]

PMID: 33711947

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Dataset Information

Association between maternal outdoor physical exercise and the risk of preterm birth: a case-control study in Wuhan, China.

Background

Methods

Results

Conclusion

Publications

Association between maternal outdoor physical exercise and the risk of preterm birth: a case-control study in Wuhan, China.

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