High-Intensity Exercise Snacks for Reducing Mobile Phone Addiction in Adolescents

This study is a randomized controlled trial (RCT) designed to evaluate the long-term effectiveness of "Exercise Snacks" (fragmented, high-intensity bouts of exercise) in reducing mobile phone addiction among adolescents. Participants will be randomly assigned to either an intervention group or a control group. The intervention spans 5 months and is followed by a 1-month follow-up period (Month 6). The intervention group will perform short bursts of exercise (e.g., 1-minute sprints, squats) multiple times daily during school breaks. The program is divided into three progressive phases: adaptation, enhancement, and consolidation. The study aims to determine whether this sustained "snack-style" exercise regimen can significantly lower mobile phone addiction scores, improve physical fitness, and enhance psychological traits such as self-control and resilience over a semester-long period.

NCT Number	NCT07338058
Lead Sponsor	Jinan University Guangzhou
Conditions	Smartphone Addiction, Sedentary Behaviors, Adolescent Behavior
Enrollment	386 participants
Start Date	2025-09-01
Primary Completion	2026-03-01 (estimated)
Study Completion	2026-03-01 (estimated)
Updated on ClinicalTrials.gov	2026-04-30