Physical activity and weight gain during pregnancy
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A low level of daily PA and regular recreational exercise was shown in the present study of pregnant women in Oslo. There was a decline in exercise intensity, duration and frequency from before pregnancy and throughout the course of pregnancy. Walking was the most common exercise mode. The results of the multivariate analysis showed that women who decreased regular exercise in the 3rd trimester had higher weight gain and reported to have no social role models with respect to exercise behaviour during childhood. Pre-pregnancy physical inactivity was the strongest predictor of decreased maternal exercise in the 3rd trimester. There was no difference between exercisers and non-exercisers with respect to pre-pregnancy body mass index (BMI) and commonly reported pregnancy complaints such as pelvic girdle pain (PGP) and urinary incontinence. Comparison of the PAPQ and the ActiReg indicated only small differences between the two methods in cross-tabulation of total PA level and proportion of participants meeting the current exercise guidelines. The Bland-Altman plot of the activity patterns showed a mean difference near zero with no apparent trends and with a wide scatter of individual observations. Drop-out rates of the present RCT were 19.2% and 20.8% in the EG and CG, respectively. Only women attending regularly to the prescribed exercise program significantly reduced maternal weight gain. No women attending 24 exercise sessions exceeded the IOM recommendations. Weight retention 6-8 weeks postpartum was also significantly lower in women attending 24 exercise classes.Paper I: Tatt ut av filen i Brage p.g.a. copyright-restriksjoner. / Not in the file in Brage because of copyright issues.Paper II: Tatt ut av filen i Brage p.g.a. copyright-restriksjoner. / Not in the file in Brage because of copyright issues.Paper III: Haakstad LA, Gundersen I, Bø K. Self report versus motion monitor in measurement of physical activity during pregnancy. In press Acta Obstet Gynecol Scand.Paper IV: Haakstad LA, Bø K. Effect of regular exercise in prevention of excessive weight gain in pregnancy. Submitted to International Journal of Behavioral Nutrition and Physical Activity.
Avhandling (doktorgrad) – Norges idrettshøgskole, 2010.