BPIT 5-Line Pilot: Interventional Study on Strength, HRV & Injury Risk Reduction (n=23)

This prospective, single-center, interventional pilot (n=23) evaluates the 5-Line Principle of Balanced Intensity Training (BPIT) over 6 weeks at GFFI Fitness Academy. Participants (18 males aged 22-48, 5 females aged 20-33) will receive BPIT 5-Line Training (3 sessions/week, 6 weeks). No control group. Conducted July 1 - November 30, 2024. Progressive intensity via anatomical lines: 1. Ground-Based (Low Intensity); 2. Knee-Level (Low-Moderate); 3. Standing (Moderate); 4. Head-Level (Moderate-High); 5. Plyometric/High-Impact (High). Aims to assess changes in strength, HRV, and injury risk.