A. Rashid-lamir - Exercise Physiology Department, Sport Sciences Faculty, Ferdowsi University of Mashhad, Mashhad, Iran
R. Fazolahzade-Mousavi - Physical Education Department, Neyshabour Branch, Islamtic Azad University, Neyshabour, Iran
Gh.R. Mohammad Rahimi - Exercise Physiology Department, Sport Sciences Faculty, Ferdowsi University of Mashhad, Mashhad, Iran

Aims: Matrix Metalloproteinases (MMPs) are a group of in charge of extracellular matrix decomposition. The present research aimed at investigating the effects of ۸ weeks of aerobic training on MMP plasma levels in lifeguards. Materials & Methods: This study was a quasi-experimental one with ۱۹ volunteer participants who were randomly assigned to either the control group (n=۸) or the experimental group (n=۱۱). The latter did aerobic exercises in water for ۸ weeks at ۶۵ to ۷۵% of their reserved heart rate. Fasting blood samples (۱۰cc) were collected from the brachial vein before and after the training protocol. was determined by applying ELIZA (Enzyme-Linked Immunosorbent Assay) method and the data were analyzed using SPSS ۱۶ software. The significance level was set at p<۰.۰۵. Findings: Results showed a significant increase in MMP-۲ level in the experimental group as compared to the control group. Conclusion: Increasing MMP levels due to ۸ weeks of aerobic exercise in water may play an important role in physiological functions and tissue homeostasis. It may indicate remodeling of muscle fibers and connective tissue.  

Exercise, Matrix Metalloproteinase, Pilot Study