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

NCT07338058 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 386

Last updated 2026-04-30

No results posted yet for this study

Summary

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.

Conditions

  • Smartphone Addiction
  • Sedentary Behaviors
  • Adolescent Behavior

Interventions

BEHAVIORAL

Exercise Snacks Protocol

The intervention consists of a structured 5-month "Exercise Snacks" program. Participants perform "snacks"-defined as isolated bouts of vigorous-intensity physical activity (\<2 min)-distributed 3-4 times throughout the school day during breaks. Content: The regimen includes "Sprint Snacks" (e.g., stair climbing, high knees) and "Strength Snacks" (e.g., squats, push-ups). Intensity: Participants are instructed to reach a subjective effort level of Borg RPE \> 14 (Somewhat Hard to Hard). Progression: The program follows a phased approach: Adaptation (Month 1): Focus on habit formation and movement quality. Enhancement (Months 2-3): Increased frequency and inclusion of weekly collective HIIT sessions. Consolidation (Months 4-5): Integration of cognitive-behavioral guidance to replace mobile phone usage habits.

Sponsors & Collaborators

  • Jinan University Guangzhou

    lead OTHER

Principal Investigators

  • Rui Si Ma · Jinan University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
12 Years
Max Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-09-01
Primary Completion
2026-03-01
Completion
2026-03-01

Countries

  • Hong Kong

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07338058 on ClinicalTrials.gov