A Culturally-Tailored Mobile Health and Social Media Physical Activity Intervention for Improving Physical Activity in Hispanic or Latino/Latina Adolescent and Young Adult Childhood Cancer Survivors, Walking Juntos Study

PRIMARY OBJECTIVES:

I. Use an iterative approach to develop a culturally-tailored multilevel remote-based physical activity (PA) intervention among a total of 20 Latinx adolescent and young adult survivors of childhood cancer (AYA survivors), 8-12 whose preferred language is English and 8-12 whose preferred language is Spanish, using the StepByStep intervention as a starting point. (Stage 1)

II. Conduct a randomized controlled trial (RCT) to test the potential efficacy of the culturally-tailored remote-based PA intervention (versus [vs.] Fitbit PA tracker only) with respect to the primary outcome of moderate to vigorous physical activity (MVPA) measured with a validated, wearable Fitbit PA tracker over 12 weeks among a separate group of 170 Latinx AYA survivors whose preferred language is Spanish or English (n=85 per randomization group) and who do not meet PA guidelines at timepoint (T) 1. The control group will receive a Fitbit only. (Stage 2)

SECONDARY OBJECTIVES:

I. Among the patients enrolled to the RCT component of the study, evaluate the potential efficacy of randomization to the intervention group relative to control group with respect to decreasing sedentary time as assessed by a Fitbit PA tracker.

II. Evaluate potential efficacy of randomization to the active intervention group with respect to improvement in reported health-related quality of life.

EXPLORATORY OBJECTIVES:

I. Evaluate potential efficacy of randomization to the active intervention group with respect to physiological measurements predictive of cardiometabolic health.

II. Determine the acceptability of and guidance on improving the intervention phases in preparation for a fully powered, long term RCT by conducting two rounds of post-trial qualitative interviews among participants in the intervention Group n=12-15 for the intensive intervention phase and n=12-15 for the maintenance intervention phase. Preferences and barriers for an additional diet and nutrition component will also be explored.

OUTLINE:

STAGE 1: Patients wear a Fitbit physical activity tracker daily, set physical activity goals, receive text messages, and view private social media peer support group content over 7-10 days once every 3 months. Patients also wear a research grade activity measuring device over 1-3 days and participate in a one-on-one interview once every 3 months for 9 months.

STAGE 2: Patients are randomized to 1 of 2 groups.

GROUP I (INTERVENTION):

INTENSIVE PHASE: Patients wear a Fitbit physical activity tracker daily and receive weekly reminders to wear the Fitbit for 12 weeks. Patients attend weekly goal setting sessions, receive individualized physical activity goals, view and post private social media peer support group content 2-3 times weekly, receive badges, and participate in a monthly Zoom meeting with their peers to discuss physical activity for 12 weeks. Patients may optionally choose a physical activity partner. Partners wear a Fitbit physical activity tracker and receive educational materials about supporting the participant.

MAINTENANCE PHASE: Patients wear a Fitbit physical activity tracker daily and set their own physical activity goals weekly for 4 weeks. Patients also receive access to the social media account and post content for 4 weeks. In addition, patients may continue to have their physical activity partner support them as in the Intensive Phase.

GROUP II (CONTROL): Patients wear a Fitbit physical activity tracker daily for 12 weeks.