Web-based Physical Activity Intervention for Latinas
Condition: Inactivity
Study type: Interventional

Summary: 
      This renewal builds upon our successful culturally adapted PA intervention for Latinas (Pasos
      Hacia La Salud, R01CA159954) and expands its focus to the critical area of maintenance of
      behavior change. This study will test an enhanced version of the original internet
      intervention in order to achieve greater increases in PA and longer term maintenance.
      Investigators propose to test this newly developed enhanced intervention (Enhanced
      Intervention) compared to the original Pasos Hacia La Salud Intervention (Original
      Intervention) in a 24-month randomized trial (N=300).
    

Detailed description: 
      In the U.S., Latina women report higher rates of inactivity than their non-Hispanic White and
      male counterparts, and are disproportionately affected by related health conditions (e.g.,
      cancer, hypertension, heart disease, stroke, diabetes). To address this public health crisis,
      evidence-based interventions that utilize state-of-the-art technology, theory and methods are
      needed to increase physical activity (PA) among this high-risk population. Recently, our team
      conducted a randomized controlled trial (N=205) to test the efficacy of a 6-month culturally
      adapted, individually tailored, Spanish-language Internet-based PA intervention among Latinas
      (Pasos Hacia La Salud, R01CA159954) vs. a Wellness Contact Control Internet Group. Increases
      in minutes/week of moderate-to-vigorous physical activity (MVPA) were significantly greater
      in the Intervention Group compared to the Control Group at 6 and 12 months (p < .01) but
      still did not reach levels recommended in the national physical activity guidelines. As
      improvements in PA in the Intervention Group were significantly associated with website use
      and increases in self-efficacy, enjoyment, and social support in the parent study, we used
      these data to inform technology and theory-supported enhancements to the intervention (i.e.,
      text messaging and adaptive goal setting to increase website use and further targeting of the
      previously mentioned key psychosocial constructs) to achieve even greater increases in PA,
      and maintain these gains over the long term (24 months) in the renewal of R01CA159954. For
      the proposed study, 300 Latina women will be randomized to either 1) the original Pasos Hacia
      La Salud tailored Internet-based PA intervention (Original Intervention) or 2) the data
      driven, enhanced version of the Pasos Hacia La Salud PA intervention (Enhanced Intervention).
      We hypothesize that participants in the Enhanced Intervention arm will report significantly
      more minutes/week of MVPA than participants in the Original Intervention arm at 6 months. We
      will also examine the maintenance of treatment effects at 12, 18, and 24 months, as well as
      the costs of delivering the Enhanced vs. Original Intervention programs, and the potential
      mediators of the intervention-PA relationship. The proposed high reach, low-cost intervention
      holds great promise in promoting and maintaining the positive health benefits of PA in the
      lives of Latina women in the United States.
    

Intervention name(s): Enhanced Physical Activity Intervention; Original Physical Activity Intervention
Intervention type(s): Behavioral; Behavioral
Intervention description(s): Participants in the Enhanced Intervention arm will receive all the intervention components of the Original Intervention described above plus: 1) text messages and adaptive goal-setting to drive participants back to the website and keep them there longer, and 2) data-driven, technology supported enhanced intervention content targeting theoretical constructs that influenced PA behavior in Latinas from the parent study.; Participants in the Original Physical Activity intervention arm of the study will receive the original Spanish language, motivationally-tailored, Internet-based physical activity intervention that specifically addresses the Physical Activity barriers and intervention needs/preferences of Latinas.
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Treatment
Keywords: Physical Activity; Latinas; Spanish-language; Text-Message; Exercise; Web-based