title: Effectiveness of a 12-month randomized clinical trial to increase physical activity in multiethnic postpartum women: results from Hawaii's Nā Mikimiki Project.
abstract: OBJECTIVE
  Few 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.
  
  
  METHODS
  From 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.
  
  
  RESULTS
  Controlling 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).
  
  
  CONCLUSIONS
  A tailored intervention effectively increased MVPA over 12months in multiethnic women with infants, particularly those with more than one child.
authors.affiliation: 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.
authors.forename: Cheryl L
authors.initials: CL
authors.lastname: Albright
authors.affiliation: Cancer Prevention and Control Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, 701 Ilalo St., Honolulu, HI 96813, USA; College of Nursing, University of Illinois at Chicago, 845 S. Damen Ave., M/C 802, Rm. 648, Chicago, IL 60612, USA. Electronic address: steffena@uic.edu.
authors.forename: Alana D
authors.initials: AD
authors.lastname: Steffen
authors.affiliation: Cancer Epidemiology Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, 701 Ilalo St., Honolulu, HI 96813, USA. Electronic address: lynne@cc.hawaii.edu.
authors.forename: Lynne R
authors.initials: LR
authors.lastname: Wilkens
authors.affiliation: Cancer Epidemiology Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, 701 Ilalo St., Honolulu, HI 96813, USA. Electronic address: kwhite@cc.hawaii.edu.
authors.forename: Kami K
authors.initials: KK
authors.lastname: White
authors.affiliation: Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, 1955 East-west Road, AgSci 302I, Honolulu, HI 96822, USA. Electronic address: novotny@hawaii.edu.
authors.forename: Rachel
authors.initials: R
authors.lastname: Novotny
authors.affiliation: Office of Public Health Studies, University of Hawaii at Manoa, 1960 East-west Road, BioMedical Sciences Bldg, C105, Honolulu, HI 96822, USA. Electronic address: cnigg@hawaii.edu.
authors.forename: Claudio R
authors.initials: CR
authors.lastname: Nigg
authors.affiliation: 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. Electronic address: knsaiki@hawaii.edu.
authors.forename: Kara
authors.initials: K
authors.lastname: Saiki
authors.affiliation: Centre for Research on Exercise Physical Activity and Health (CRExPAH), School of Human Movement Studies, University of Queensland, Blair Drive, St. Lucia, QLD 4072, Australia. Electronic address: wbrown@hms.uq.edu.au.
authors.forename: Wendy J
authors.initials: WJ
authors.lastname: Brown
mesh_terms: D061725:Accelerometry; D000328:Adult; D017677:Age Distribution; D003376:Counseling / Q000379:methods*; D005006:Ethnicity / Q000523:psychology / Q000706:statistics & numerical data; D015444:Exercise / Q000502:physiology*; D005260:Female; D006254:Hawaii; D006293:Health Promotion / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D020407:Internet; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D044468:Native Hawaiian or Pacific Islander; D010298:Parity; D049590:Postpartum Period / Q000208:ethnology; D015397:Program Evaluation; D011795:Surveys and Questionnaires; D013689:Telephone; D016387:Women's Health; D055815:Young Adult
keywords: Exercise; Postnatal; Randomized controlled trial; Technology