Hemodynamic Changes In Dominant And Non-dominant Arms Of Tennis Players After Performance

Abstract

PURPOSE: The dominant extremities of tennis players have structural and physiological adaptation. The aim of present study was to investigate the long-term change in muscle blood flow and oxygenation in active and inactive limbs after tennis performance. METHODS: Nine healthy male professional tennis players were performed a bout of forehand tennis training for 10 min. Before, immediately and after the next two days, muscle oxygenation and blood flow were measured by near-infrared spectroscopy (NIRS) for non-dominant and dominant elbow muscles. RESULTS: The result showed that circumference of racket hand is higher than that of opposite hand. Total hemoglobin (TH) concentration of opposite hand was decreased significantly day 1 after tennis performance. Dominant hand has higher TH than non-dominant hand immediately and 1 day after exercise. Oxygen saturation was decreased significantly in both hands immediately after exercise, and oxygen saturation of dominant hand was significantly higher than that of non-dominant hand on day 1 after exercise. Oxygenated hemoglobin for non-dominant hand was significantly decreased immediately and also day 1 after exercise. Comparably, dominant hand have higher oxygenated hemoglobin than opposite hand on day 1. In addition, deoxygenated hemoglobin for dominant hand significantly increased immediately after exercise. CONCLUSIONS: This result suggests that hemodynamic alteration may be responsible for prolonged structural and physiological adaptation to asymmetric exercise.