McParlin, CatherineRobson, StephenTennant, PeterBesson, HerveRankin, JudithAdamson, Ashley JPearce, Mark StephenBell, Ruth2022-01-172022-01-171471-2393http://hdl.handle.net/1885/258445Background Obese and overweight women may benefit from increased physical activity (PA) during pregnancy. There is limited published data describing objectively measured PA in such women. Methods A longitudinal observational study of PA intensity, type and duration using objective and subjective measurement methods. Fifty five pregnant women with booking body mass index (BMI) ≥ 25 kg/m2 were recruited from a hospital ultrasound clinic in North East England. 26 (47%) were nulliparous and 22 (40%) were obese (BMI ≥ 30 kg/m2). PA was measured by accelerometry and self report questionnaire at 13 weeks, 26 weeks and/or 36 weeks gestation. Outcome measures were daily duration of light, moderate or vigorous activity assessed by accelerometry; calculated overall PA energy expenditure, (PAEE), and PAEE within four domains of activity based on self report. Results At median 13 weeks gestation, women recorded a median 125 mins/day light activity and 35 mins/day moderate or vigorous activity (MVPA). 65% achieved the minimum recommended 30 mins/day MVPA. This proportion was maintained at 26 weeks (62%) and 36 weeks (71%). Women achieving more than 30 mins/day MVPA in the first trimester showed a significant reduction in duration of MVPA by the third trimester (11 mins/day, p = 0.003). Walking, swimming and floor exercises were the most commonly reported recreational activities but their contribution to estimated energy expenditure was small. Conclusion Overweight and obese pregnant women can achieve and maintain recommended levels of PA throughout pregnancy. Interventions to promote PA should target changes in habitual activities at work and at home, and in particular walking.The study was supported jointly by Newcastle University and the Directorate of Women’s Services, Royal Victoria Infirmary, Newcastle Upon Tyne, UK.application/pdfen-AU© 2010 The Authorshttp://creativecommons.org/licenses/by/2.0Keywords: accelerometry; adult; article; body mass; energy expenditure; female; first trimester pregnancy; gestational age; human; longitudinal study; major clinical study; measurement; nullipara; obesity; observational study; outcome assessment; pelvic floor muscl201010.1186/1471-2393-10-762022-03-13Creative Commons Attribution licence