S M Nazmuz Sakib Cardio-Optimized Rhythmic Exercise (SCORE): A Heartbeat-Harmonic Training Paradigm for Real-Time Skeletal–Cardiac Synchronization

Abstract

The S M Nazmuz Sakib Cardio-Optimized Rhythmic Exercise (SCORE) method introduces a novel paradigm in exercise science that synchronizes skeletal muscle movement cadence to the performer’s real-time cardiac rhythm via rational p : q harmonic ratios. Unlike conventional tempo training driven by fixed external beats, or heart-rate zone methods that regulate intensity without temporal coupling, SCORE dynamically adjusts movement cadence in direct proportion to instantaneous heart rate, preserving the chosen harmonic ratio throughout a session. Each concentric and eccentric phase is intentionally aligned to grouped heartbeat cycles, enabling biofeedback-driven, adaptive training that can enhance autonomic regulation, optimize venous return through muscle-pump synergy, and improve movement economy. Different ratio configurations allow targeted outcomes: slower ratios (p < q) for strength and time-under-tension, near-equal ratios (p ≈ q) for coordination and endurance, and faster ratios (p > q) for quickness and elasticity. SCORE requires only real-time heart rate monitoring and can be applied across a variety of movements without specialized equipment, making it accessible for athletes, rehabilitation settings, and general fitness. This approach establishes a distinct, testable organizing principle for synchronizing human movement with intrinsic cardiac timing.