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Table 1 Intervention technology channels and content

From: A multiple technology-based physical activity intervention for Latina adolescents in the USA: randomized controlled trial study protocol for Chicas Fuertes

Website content

Instagram posts

Fitbit tracker and smartphone App

SMS/texting

-New tailored report*

-Goal setting calendar*

-Current activity graphs*

-Engagement points tally*

-Activity resource guide

-Activity leaders board

-Message board

-Monthly questionnaires

-Instagram feed

-Daily tip

-Solutions to common barriers

(*Individually tailored)

-Reminders to wear and sync Fitbits

-Physical activity demonstration videos/modeling

-Places to be active

-Benefits/outcome expectancies

-Self-efficacy

-Social support

-Behavior change techniques

-Weekly challenge

-Goal setting (daily active minutes, steps, energy expenditure, standing)

-Activity tracking

-Reminders to move

-Goal achievement reinforcement

-Trophies and badges

-Weekly goal reminder

-Weekly goal update*

-Weekly adaptive goal setting*

(*Months 2–12 only)