• Cheryl L Albright, Alana D Steffen, Lynne R Wilkens, Kami K White, Rachel Novotny, Claudio R Nigg, Kara Saiki, and Wendy J Brown.
• Cancer Prevention and Control Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, 701 Ilalo St., Honolulu, HI 96813, USA; School of Nursing and Dental Hygiene, University of Hawaii at Manoa, 2528 McCarthy Mall, Webster 401, Honolulu, HI 96822, USA; Office of Public Health Studies, University of Hawaii at Manoa, 1960 East-west Road, BioMedical Sciences Bldg, C105, Honolulu, HI 96822, USA. Electronic address: cherylal@hawaii.edu.
• Prev Med. 2014 Dec 1; 69: 214-23.

ObjectiveFew postpartum ethnic minority women perform leisure-time moderate-to-vigorous physical activity (MVPA). The study tested the effectiveness of a 12-month tailored intervention to increase MVPA in women with infants 2-12months old.MethodsFrom 2008 to 2011, women (n=311) with infants (average age=5.7months) from Honolulu, Hawaii were randomly assigned to receive tailored telephone calls and access to a mom-centric website (n=154) or access to a standard PA website (n=157). MVPA was measured at baseline, 6, and 12months using self-report and acclerometers.ResultsControlling for covariates, the tailored condition significantly increased self-reported MVPA from an average of 44 to 246min/week compared with 46 to 156min/week for the standard condition (p=0.027). Mothers with≥2 children had significantly greater increases in MVPA in response to the tailored intervention than those with one child (p=0.016). Accelerometer-measured MVPA significantly increased over time (p=0.0001), with no condition differences. There was evidence of reactivity to initially wearing accelerometers; the tailored intervention significantly increased MVPA among women with low baseline accelerometer MVPA minutes, but not among those with high minutes (pinteraction=0.053).ConclusionA tailored intervention effectively increased MVPA over 12months in multiethnic women with infants, particularly those with more than one child.Copyright © 2014 Elsevier Inc. All rights reserved.

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