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A 12-week exercise program for pregnant women with obesity to improve physical activity levels: an open randomised preliminary study

Bisson Michèle, Alméras Natalie, Dufresne Sébastien S., Robitaille Julie, Rhéaume Caroline, Bujold Emmanuel, Frenette Jérôme, Tremblay Angelo et Marc Isabelle. (2015). A 12-week exercise program for pregnant women with obesity to improve physical activity levels: an open randomised preliminary study. PLoS ONE, 10, (9),

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Résumé

Objective: To evaluate whether a 12-week supervised exercise program promotes an active lifestyle throughout pregnancy in pregnant women with obesity.

Methods: In this preliminary randomised trial, pregnant women (body mass index ≥ 30 kg/m2) were allocated to either standard care or supervised training, from 15 to 27 weeks of gestation. Physical activity was measured by accelerometry at 14, 28 and 36 weeks, while fitness (oxygen consumption (VO2) at the anaerobic threshold), nutrition (caloric intake and macronutrients percentage) and anthropometry were assessed at 14 and 28 weeks of gestation. Analyses were performed using repeated measures ANOVA.

Results: A total of fifty (50) women were randomised, 25 in each group. There was no time-group interaction for time spent at moderate and vigorous activity (pinteraction = 0.064), but the exercise group’s levels were higher than controls’ at all times (pgroup effect = 0.014). A significant time-group interaction was found for daily physical activity (p = 0.023); similar at baseline ((22.0 ± 6.7 vs 21.8 ± 7.3) x 104 counts/day) the exercise group had higher levels than the control group following the intervention ((22.8 ± 8.3 vs 19.2 ± 4.5) x 104 counts/day, p = 0.020) and at 36 weeks of gestation ((19.2 ± 1.5 vs 14.9 ± 1.5) x 104 counts/day, p = 0.034). Exercisers also gained less weight than controls during the intervention period despite similar nutritional intakes (difference in weight change = -0.1 kg/week, 95% CI -0.2; -0.02, p = 0.016) and improved cardiorespiratory fitness (difference in fitness change = 8.1%, 95% CI 0.7; 9.5, p = 0.041).

Conclusions: Compared with standard care, a supervised exercise program allows pregnant women with obesity to maintain fitness, limit weight gain and attenuate the decrease in physical activity levels observed in late pregnancy

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:10
Numéro:9
Version évaluée par les pairs:Oui
Date:16 Septembre 2015
Sujets:Sciences de la santé > Sciences de l'activité physique et réadaptation > Kinésiologie
Sciences de la santé > Sciences de l'activité physique et réadaptation > Physiothérapie
Sciences de la santé > Sciences médicales > Obstétrique et gynécologie
Département, module, service et unité de recherche:Départements et modules > Département des sciences de la santé > Unité d'enseignement en physiothérapie
Mots-clés:Exercice, grossesse, gain de poids, activité physique, obésité, pregnancy, weight gain, physical fitness, obesity
Déposé le:03 déc. 2015 01:07
Dernière modification:25 nov. 2016 18:31
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