Introduction: Post-traumatic stress disorder (PTSD) is a chronic psychiatric disorder linked to physical and mental illnesses, impacting cognitive-motor skills and daily functioning.
Objective: This study aims to assess the influence of body mass, functional balance, and motor coordination on the quality of life among male military personnel with PTSD.
Materials and Methods: The descriptive-correlational study involved male military personnel aged 30 to 55 with PTSD from medical centers of FARAJA, SEPAH, and the Ministry of Defense, in 2021. A Convenience sample of 60 subjects participated voluntarily. Quality of life (SF-36), Berg functional balance, and tandem gait tests were utilized. Data analysis included Pearson’s correlation coefficient and multivariate
linear regression 
Results: Pearson correlation revealed significant associations between quality of life and functional balance (r=0.790), motor coordination (r=0.672) and body mass index (r=0.640). Linear regression indicated that functional balance (23%), motor coordination (10%), and body mass (10%) scores could predict quality of life in male military personnel with PTSD (P≤0.01).
Conclusion: Body mass index, functional balance and movement coordination motor coordination are predictive factors for quality of life of male military personnel with PTSD. Changes in body mass index affecting physical stability, balance loss posing a fear of falling, and reduced movement coordination impacting physical skill execution efficiency can significantly influence quality of life.