Validation du questionnaire " Pregnancy physical activity questionnaire (PPAQ) " en comparaison avec l'accélérométrie : dans le cadre du programme de recherche " Évaluation de l'activité physique chez la femme obèse enceinte "

Ce mémoire renferme les résultats concernant la validation de la version française d'un questionnaire d'activité physique, le Pregnancy Physical Activity Questionnaire (PPAQ). Le questionnaire a été validé dans une population de 49 femmes obèses enceintes en le comparant à un critère fréquemment utilisé dans les études de validation, l'accélérométrie. Puisque l'obésité est un facteur de risque de complications lors d'une grossesse et que l'activité physique peut contribuer à diminuer l'obésité ou à limiter le gain de poids excessif, il est important de bien mesurer l'activité physique dans la sous-population des femmes obèses enceintes. Les outils employés dans cette étude de validation pourront être utilisés pour des projets de développement d'intervention, auprès des femmes obèses enceintes, visant à diminuer les complications périnatales et possiblement la charge financière sur le système de santé

French Pregnancy Physical Activity Questionnaire Compared with an Accelerometer Cut Point to Classify Physical Activity among Pregnant Obese Women

Given the high risk for inactivity during pregnancy in obese women, validated questionnaires for physical activity (PA) assessment in this specific population is required before evaluating the effect of PA on perinatal outcomes. No questionnaire was validated in pregnant obese women. The Pregnancy Physical Activity Questionnaire (PPAQ) has been designed based on activities reported during pregnancy and validated in pregnant women. We translated the PPAQ to French and assessed reliability and accuracy of this French version among pregnant obese women. In this cross-sectional study, pregnant obese women were evenly recruited at the end of each trimester of pregnancy. They completed the PPAQ twice, with an interval of 7 days in-between, to recall PA of the last three months. Between PPAQ assessments, participants wore an accelerometer (Actigraph GT1M) during 7 consecutive days. Fourty-nine (49) pregnant obese women (29.8±4.2 yrs, 34.7±5.1 kg.m−2) participated to the study. The intraclass correlation coefficients (ICCs) between the two PPAQ assessments were 0.90 for total activity, 0.86 for light and for moderate intensity, and 0.81 for vigorous intensity activities. It ranged from 0.59 for “Transportation” to 0.89 for “Household and Caregiving” activities. Spearman correlation coefficients (SCCs) between the PPAQ and the Matthews’ cut point used to classify an activity of moderate and above intensity were 0.50 for total activity, 0.25 for vigorous intensity and 0.40 for moderate intensity. The correlations between the PPAQ and the accelerometer counts were 0.58 for total activity, 0.39 for vigorous intensity and 0.49 for moderate intensity. The highest SCCs were for “Occupation” and “Household and Caregiving” activities. Comparisons with other standard cutpoints were presented in files S1, S2, S3, S4, S5, S6, S7. The PPAQ is reliable and moderately accurate for the measure of PA of various intensities and types among pregnant obese women

Accuracy of the PPAQ.

*<p>Including only women who were still working in the past trimester.</p

Physical activity distribution during pregnancy from Actigraph’s GT1M recording.

<p>Physical activity distribution during pregnancy from Actigraph’s GT1M recording.</p

Physical activity levels as self-reported by the PPAQ.

*<p><i>P</i><0.05.</p

Mean (SD) GT1M values across tertiles of total energy expenditure based on the PPAQ.

*<p>Jonckheere-Terpstra.</p