Kelly R Evenson1, Kathryn C Calhoun2, Amy H Herring3, David Pritchard4, Fang Wen5, Anne Z Steiner6. 1. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina. Electronic address: kelly_evenson@unc.edu. 2. Department of Obstetrics and Gynecology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina; Atlanta Center for Reproductive Medicine, Atlanta, Georgia. 3. Carolina Population Center, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina; Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina. 4. Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina. 5. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina. 6. Department of Obstetrics and Gynecology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina.
Abstract
OBJECTIVE: To estimate the association of physical activity on in vitro fertilization (IVF). DESIGN: Prospective cohort study. SETTING: Academic infertility clinic. PATIENT(S): Women (n = 121) undergoing nondonor IVF embryo transfer (fresh or frozen). INTERVENTION(S): The women completed a questionnaire on past year physical activity and wore an accelerometer from embryo transfer to serum pregnancy testing. MAIN OUTCOME MEASURE(S): Implantation, intrauterine gestation, and live birth. RESULT(S): Based on self-reported past year physical activity, the adjusted odds of intrauterine gestation was higher among those that had higher continuous active living (odds ratio [OR] 1.96, 95% confidence interval [CI] 1.09-3.50), sports/exercise (OR 1.48, CI 1.02-2.15), and total activity (OR 1.52, 95%CI 1.15-2.01) indices. After embryo transfer, women did almost no vigorous activity (median 0 min/d) as measured by the accelerometer. More of their time was spent in light activity (median 3.0 h/d) and sedentary behaviors (median 9.3 h/d). Accelerometer-measured physical activity and sedentary behavior after embryo transfer were not associated with any IVF outcome. CONCLUSION(S): An active lifestyle in the preceding year favorably impacted the IVF outcome. After embryo transfer, women engaged in mostly light physical activity and sedentary behaviors; therefore, the impact of vigorous physical activity on implantation could not be determined.
OBJECTIVE: To estimate the association of physical activity on in vitro fertilization (IVF). DESIGN: Prospective cohort study. SETTING:Academic infertility clinic. PATIENT(S): Women (n = 121) undergoing nondonor IVF embryo transfer (fresh or frozen). INTERVENTION(S): The women completed a questionnaire on past year physical activity and wore an accelerometer from embryo transfer to serum pregnancy testing. MAIN OUTCOME MEASURE(S): Implantation, intrauterine gestation, and live birth. RESULT(S): Based on self-reported past year physical activity, the adjusted odds of intrauterine gestation was higher among those that had higher continuous active living (odds ratio [OR] 1.96, 95% confidence interval [CI] 1.09-3.50), sports/exercise (OR 1.48, CI 1.02-2.15), and total activity (OR 1.52, 95%CI 1.15-2.01) indices. After embryo transfer, women did almost no vigorous activity (median 0 min/d) as measured by the accelerometer. More of their time was spent in light activity (median 3.0 h/d) and sedentary behaviors (median 9.3 h/d). Accelerometer-measured physical activity and sedentary behavior after embryo transfer were not associated with any IVF outcome. CONCLUSION(S): An active lifestyle in the preceding year favorably impacted the IVF outcome. After embryo transfer, women engaged in mostly light physical activity and sedentary behaviors; therefore, the impact of vigorous physical activity on implantation could not be determined.
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