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Can physical activity reduce excessive gestational weight gain? Findings from a Chinese urban pregnant women cohort study.

Jiang H, Qian X, Li M, Lynn H, Fan Y, Jiang H, He F, He G - Int J Behav Nutr Phys Act (2012)

Bottom Line: The adjusted odds ratio (OR) was 0.59 (95%CI: 0.36 ~ 0.95) for excessive GWG in the Active group during the 2nd trimester and 0.66 (95%CI: 0.43 ~ 1.00) in the Somewhat Active group during the 3rd trimester, compared with the Sedentary group respectively.The ORs of excessive GWG decreased with the increased level of physical activity (P < 0.05).This study suggests that pregnant women being physically active have less weight gain during pregnancy.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China.

ABSTRACT

Background: Excessive gestational weight gain (GWG) poses negative impact on mothers and their children. It is important to understand the modifiable lifestyle factors associated with excessive GWG during pregnancy to guide future public health practice.

Aim: To investigate the association between physical activity during pregnancy and GWG of Chinese urban pregnant women.

Methods: A pregnant women cohort was established between 2005 and 2007 in Changzhou, China. Physical activity levels of pregnant women were assessed using pedometer in the 2nd and 3rd trimester, respectively. According to step counts, pregnant women were categorized into 4 different physical activity groups: Sedentary, Low Active, Somewhat Active and Active. The pregnant women were followed for eligibility and data collection from the 2nd trimester to delivery. Multiple linear regression and multiple binary logistic model were applied to determine the association between physical activity and GWG.

Results: Physical activity levels and GWG of 862 pregnant women were assessed, among them 473 (54.9%) experienced excessive GWG. The adjusted odds ratio (OR) was 0.59 (95%CI: 0.36 ~ 0.95) for excessive GWG in the Active group during the 2nd trimester and 0.66 (95%CI: 0.43 ~ 1.00) in the Somewhat Active group during the 3rd trimester, compared with the Sedentary group respectively. In the last two trimesters, the Active group had 1.45 kg less GWG, than the Sedentary group. The ORs of excessive GWG decreased with the increased level of physical activity (P < 0.05).

Conclusion: This study suggests that pregnant women being physically active have less weight gain during pregnancy.

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Related in: MedlinePlus

Step counts during pregnancy in relation to gestational weight gain. * P < 0.01. The slope implied that to increase every 1000 steps in the 2nd trimester, 3rd trimester, and the last 2 trimesters, the GWG would be reduced by 0.17 kg, 0.21 kg and 0.25 kg respectively.
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Figure 1: Step counts during pregnancy in relation to gestational weight gain. * P < 0.01. The slope implied that to increase every 1000 steps in the 2nd trimester, 3rd trimester, and the last 2 trimesters, the GWG would be reduced by 0.17 kg, 0.21 kg and 0.25 kg respectively.

Mentions: The physical activity measured by step-counts was inversely related to GWG (slope = -0.17, 95%CI:-0.29 ~ -0.06, P < 0.01 in the 2nd trimester; slope = -0.21, 95%CI:-0.34 ~ -0.08, P < 0.01 in the 3rd trimester; slope = -0.25, 95%CI:-0.39 ~ -0.11, P < 0.001 in the last 2 trimesters combined, Figure 1). There were statistically significant differences of GWG among the 4 physical activity groups in the 2nd trimester (P = 0.01), the 3rd trimester (P = 0.02) and the last 2 trimesters (P = 0.02). Table 3 shows that the Active group had significantly lower maternal weight gain than the Sedentary group. No significant GWG differences were found between the Low Active group or the Somewhat Active group and the Sedentary groups. The Active group during pregnancy gained 1.45 kg less weight than the Sedentary group classified by the average physical activity in the 2nd and 3rd trimester.


Can physical activity reduce excessive gestational weight gain? Findings from a Chinese urban pregnant women cohort study.

Jiang H, Qian X, Li M, Lynn H, Fan Y, Jiang H, He F, He G - Int J Behav Nutr Phys Act (2012)

Step counts during pregnancy in relation to gestational weight gain. * P < 0.01. The slope implied that to increase every 1000 steps in the 2nd trimester, 3rd trimester, and the last 2 trimesters, the GWG would be reduced by 0.17 kg, 0.21 kg and 0.25 kg respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3306269&req=5

Figure 1: Step counts during pregnancy in relation to gestational weight gain. * P < 0.01. The slope implied that to increase every 1000 steps in the 2nd trimester, 3rd trimester, and the last 2 trimesters, the GWG would be reduced by 0.17 kg, 0.21 kg and 0.25 kg respectively.
Mentions: The physical activity measured by step-counts was inversely related to GWG (slope = -0.17, 95%CI:-0.29 ~ -0.06, P < 0.01 in the 2nd trimester; slope = -0.21, 95%CI:-0.34 ~ -0.08, P < 0.01 in the 3rd trimester; slope = -0.25, 95%CI:-0.39 ~ -0.11, P < 0.001 in the last 2 trimesters combined, Figure 1). There were statistically significant differences of GWG among the 4 physical activity groups in the 2nd trimester (P = 0.01), the 3rd trimester (P = 0.02) and the last 2 trimesters (P = 0.02). Table 3 shows that the Active group had significantly lower maternal weight gain than the Sedentary group. No significant GWG differences were found between the Low Active group or the Somewhat Active group and the Sedentary groups. The Active group during pregnancy gained 1.45 kg less weight than the Sedentary group classified by the average physical activity in the 2nd and 3rd trimester.

Bottom Line: The adjusted odds ratio (OR) was 0.59 (95%CI: 0.36 ~ 0.95) for excessive GWG in the Active group during the 2nd trimester and 0.66 (95%CI: 0.43 ~ 1.00) in the Somewhat Active group during the 3rd trimester, compared with the Sedentary group respectively.The ORs of excessive GWG decreased with the increased level of physical activity (P < 0.05).This study suggests that pregnant women being physically active have less weight gain during pregnancy.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China.

ABSTRACT

Background: Excessive gestational weight gain (GWG) poses negative impact on mothers and their children. It is important to understand the modifiable lifestyle factors associated with excessive GWG during pregnancy to guide future public health practice.

Aim: To investigate the association between physical activity during pregnancy and GWG of Chinese urban pregnant women.

Methods: A pregnant women cohort was established between 2005 and 2007 in Changzhou, China. Physical activity levels of pregnant women were assessed using pedometer in the 2nd and 3rd trimester, respectively. According to step counts, pregnant women were categorized into 4 different physical activity groups: Sedentary, Low Active, Somewhat Active and Active. The pregnant women were followed for eligibility and data collection from the 2nd trimester to delivery. Multiple linear regression and multiple binary logistic model were applied to determine the association between physical activity and GWG.

Results: Physical activity levels and GWG of 862 pregnant women were assessed, among them 473 (54.9%) experienced excessive GWG. The adjusted odds ratio (OR) was 0.59 (95%CI: 0.36 ~ 0.95) for excessive GWG in the Active group during the 2nd trimester and 0.66 (95%CI: 0.43 ~ 1.00) in the Somewhat Active group during the 3rd trimester, compared with the Sedentary group respectively. In the last two trimesters, the Active group had 1.45 kg less GWG, than the Sedentary group. The ORs of excessive GWG decreased with the increased level of physical activity (P < 0.05).

Conclusion: This study suggests that pregnant women being physically active have less weight gain during pregnancy.

Show MeSH
Related in: MedlinePlus