title: Moderating Effects of Health Literacy on Change in Physical Activity Among Latinas in a Randomized Trial.
abstract: BACKGROUND
  Latinas report low rates of physical activity (PA) and are at risk for poor health outcomes. Language and literacy barriers impede access and utilization of PA-related resources. This study examined health literacy as a moderator on changes in moderate-to-vigorous physical activity (MVPA) in 196 Latinas enrolled in Seamos Saludables, a randomized-controlled trial of a 6-month culturally and linguistically adapted PA print intervention
  
  
  METHODS
  Secondary analyses were conducted on demographics, acculturation and generation status, and health literacy (Newest Vital Sign). MVPA was determined by 7 day physical activity recall, assessed at baseline and 6 months. General linear models examined interaction effects between health literacy (HL), experimental condition (treatment vs. control), and generation status.
  
  
  RESULTS
  Health literacy moderated change in MVPA from baseline to 6 months. The intervention effect was greater among first-generation Latinas with limited health literacy.
  
  
  CONCLUSIONS
  Differences in health literacy level appear to influence MVPA outcomes. Formative research is recommended to ensure that materials are appropriate when developing print-based PA interventions, particularly among first-generation Latinas who are more likely to have limited health literacy.
authors: Department of Behavioral Health and Nutrition, University of Delaware, 26 North College Avenue, Newark, DE, 19716, USA. gdominic@udel.edu.
authors: Gregory M
authors: GM
authors: Dominick
authors: The Centers for Behavioral and Preventive Medicine, The Miriam Hospital, Providence, RI, USA.
authors: Shira I
authors: SI
authors: Dunsiger
authors: Department of Health Behavior, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA.
authors: Dorothy W
authors: DW
authors: Pekmezi
authors: Department of Family & Preventive Medicine, University of California, San Diego, San Diego, CA, USA.
authors: Britta
authors: B
authors: Larsen
authors: Department of Family & Preventive Medicine, University of California, San Diego, San Diego, CA, USA.
authors: Becky
authors: B
authors: Marquez
authors: Department of Family & Preventive Medicine, University of California, San Diego, San Diego, CA, USA.
authors: Jesse
authors: J
authors: Nodora
authors: Department of Behavioral and Social Sciences, Brown University, Providence, RI, USA.
authors: Kim M
authors: KM
authors: Gans
authors: Department of Family & Preventive Medicine, University of California, San Diego, San Diego, CA, USA.
authors: Bess H
authors: BH
authors: Marcus
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D057220:Health Literacy / Q000706:statistics & numerical data*; D006630:Hispanic or Latino / Q000523:psychology* / Q000706:statistics & numerical data; D006801:Humans; D008875:Middle Aged; D009043:Motor Activity; D055815:Young Adult
keywords: Health literacy; Latinas; Newest Vital Sign; Physical activity