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Background and Objectives: Iron has a substantial role in growth of children. Regarding importance of iron metabolism and the role of hepcidin in this process, we aimed to evaluate the impact of a single period of interval swimming exercise on iron storage content and plasma hepcidin level in adolescent boys. Subjects and Methods In present semi-experimental study, 30 swimmers were selected by targeted sampling, and randomly allocated into two groups (each with 15 members) of swimming interval training (13.70±0.70) and control (13.75±0.88). Training protocol included eight weeks of interval swimming exercise, three sessions (50-60 minutes) per week of swimming interval training with 60-80% heart rate reserved, and rest to training ratio 1:1. Fasting blood sampling was performed in pre-test and post-test. Paired and independent t tests were used for data analysis at significant level of P≤0.05. Results After eight weeks of training, a significant reduction was found in levels of hemoglobin (P=0.001), serum iron (P=0.008) and ferritin (P=0.012, while hepcidin level (P=0.040) showed a significant increase respective to control group.  Conclusion Considering our results, eight weeks of interval swimming exercise can reduce iron storages (in physiologic levels) and increase plasma hepcidin in adolescent boys.

Effect of Interval Swimming Training on Iron Storage and Hepcidin Level in Adolescent Boys Aged 13-15 Years Old