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The goal of this randomized controlled trial is to test whether a dual-dimensional 9-grid matrix intervention improves body composition and exercise adherence compared to standard aerobic exercise in overweight/obese college students. The main questions it aims to answer are:
Does the 9-grid model optimize fat distribution (measured by waist-hip ratio) and sustain body fat reduction better than traditional exercise?
Does dynamic risk stratification in the 9-grid system enhance long-term exercise adherence?
How does spatial migration of participants within the grid (quantified by centroid index G) reflect intervention efficacy?
Researchers will compare the 9-grid management group (receiving dynamic positioning + 5-tier personalized strategies) to the control group (receiving standardized aerobic exercise) to see if the 9-grid model:
Reduces waist-hip ratio more effectively
Delays intervention plateau in body fat loss
Increases exercise adherence at 8 weeks
Participants will:
Undergo body measurements (weight, body mass index (BMI), body fat percentage, waist/hip circumference) at baseline, 4 weeks, and 8 weeks
Complete the Exercise Adherence Rating Scale (EARS) at 4 and 8 weeks
If in 9-grid group:
If in control group:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Dynamic Nine-Grid Matrix Group | Experimental | Tiered management via waist-risk/body-fat matrix. Participants receive bi-weekly health positioning and one of five precision strategies (e.g., high-intensity exercise + dietary control for Grid-I; low-intensity maintenance for Grid-IX). Real-time feedback via digital dashboard. |
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| Standard Aerobic Prescription Group | Placebo Comparator | Standardized progressive aerobic exercise at 40-90% heart rate reserve. Intensity/volume are personalized at baseline but remain static afterward. Adherence monitored using Huawei wearables (no dynamic adjustments or tiered feedback). |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dynamic Matrix Management for Weight Control (DMM-WC) | Behavioral | Precision weight management using a two-dimensional grid model. Participants undergo bi-weekly positioning on a waist risk-body fat matrix (9 grids), receiving tiered interventions (e.g., high-intensity exercise + dietary control for high-risk grids; maintenance plans for low-risk grids). Real-time progress feedback via visual spatial migration maps promotes adherence. Comparator group receives standardized aerobic prescription without dynamic adjustments. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Waist-to-Hip Ratio (WHR) | Baseline, Week 4, Week 8 | |
| Body Mass Index (BMI) | Baseline, Week 8 | |
| Adherence to exercise | Exercise adherence will be assessed using the standardized Exercise Adherence Rating Scale (EARS). This validated, self-reported questionnaire comprises 16 items. The first 6 items directly assess participants' behavioral adherence to the prescribed exercise regimen (e.g., session attendance, duration). The subsequent 10 items evaluate reasons for adherence or non-adherence, capturing key cognitive dimensions such as perceived barriers and motivation. All items are rated on a 5-point Likert scale ranging from "Completely Agree" (scored as 0) to "Completely Disagree" (scored as 4). Total scores are calculated such that higher scores indicate better exercise adherence. | Week 4, Week 8 |
| Body Fat Percentage | Baseline, Week 4, Week 8 |
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Inclusion Criteria:
Age & Status:
Overweight/Obesity Diagnosis (per Chinese criteria):
Exercise Capacity:
Tech Compliance:
Informed Consent:
Exclusion Criteria:
Metabolic Diseases:
Exercise Contraindications:
Confounding Medications:
Special Physiological Status:
Conflicting Participation:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hainan Normal University | Haikou | Hainan | China |
1 January 2030
Academic researchers affiliated with accredited institutionsRegulatory bodies Peer reviewers for journal publication validationAccess Process:Step 1: Submit research proposal via OpenClinica PlatformStep 2: Institutional ethics approval documentation requiredStep 3: Data Use Agreement signing with corresponding authors
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| ICF | No | No | Yes | Informed Consent Form | Apr 16, 2024 | Aug 18, 2025 |
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| Standard Aerobic Prescription | Behavioral | Personalized progressive aerobic exercise program. Participants receive baseline-adjusted intensity prescriptions (40-90% heart rate reserve), with adherence monitored via wearable devices. NO dynamic adjustments, tiered strategies, or visual feedback are provided throughout the 8-week intervention. |
|
| ICF_000.pdf |