Blood Parameters

This study aims to investigate acute changes in serum ferritin, folate, vitamin B12, and parathyroid hormone (PTH) levels following aerobic exercise in professional soccer players. Twenty professional male soccer players will voluntarily participate in the study. Participants will complete a progressive 20-meter shuttle run test. Venous blood samples will be collected immediately before and after the exercise protocol. Pre- to post-exercise changes in each blood parameter will be analyzed to determine the acute physiological responses to aerobic exercise in professional soccer players.