List of Articles Open Access Article Abstract Page Full-Text 1 - Optimization of Alkaline Protease Enzyme Using Statistical Methods Marzieh Keyhanian Open Access Article Abstract Page Full-Text 2 - The Effect of Impulsivity Level on Performance Indicators of Beginner Volleyball Players Marjan Hamoun Navard Open Access Article Abstract Page Full-Text 3 - The Effect of Water Exercise on Pain and Disability in Patients with Non-Specific Chronic Back Pain and Its Relationship with Changes in Inflammatory Factors Mohammad-Ali Kohanpour Saeideh Najd Monireh khademi Sirous Farsi