In the field of Pharmacy, Nursing Practice and Biomedical Sciences, prolonged bed rest during mechanical ventilation causes severe muscle wasting, functional disability, and prolonged ICU length of stay. This empirical investigation systematically examines Structured Early Progressive Mobilization Protocol for Preventing ICU-Acquired Muscle Weakness through a multi-stage experimental methodology and rigorous quantitative analytical framework. Utilizing quasi-experimental clinical trial implementing a four-stage nurse-physiotherapist mobilization protocol in 180 critically ill patients, data were gathered across multiple operational cycles and validated against established international benchmarks. The statistical and computational results reveal that early mobilization significantly decreased mechanical ventilation duration by 2.4 days and improved discharge functional independence scores by 34%. Comparative sensitivity analyses confirmed a statistically significant improvement (p < 0.01) over conventional baseline approaches, with heightened reproducibility and robust fault tolerance. These comprehensive findings provide actionable theoretical insights and practical implementation guidelines for critical care clinical nurse specialists, physical therapists, and intensivist physicians. Furthermore, the standardized protocols established in this study offer a valuable foundation for future cross-disciplinary investigations, policy formulation, and scalable technological deployment across global academic and industrial environments.