不同泳姿動態恢復對隨後自由式游泳表現與生理恢復之影響

Purpose: To investigate the effects of different recovery treatments after 200-m swimming sprint on subsequent swimming sprint performance and physiological recovery. Methods: Ten front crawl swimmers were recruited in the randomized crossover study (age, 17.3±1.6 yrs; height, 170.1±4.8 cm; body weight, 65.6±4.1 kg). Two 100-m swimming sprint tests in breaststroke and front crawl were respectively performed to determine the intensity of active recovery, i.e., 55% of maximum velocity (v•max). After 48 hours, each participant performed 200-m swimming sprint test, and then performed respectively three 15-min active recovery treatments, including front crawl (FC), breaststroke (BS) and passive recovery (Con) treatments, which were separated by at least 48 hours. After treatment, participants were asked to perform the second 200-m swimming sprint test. The swimming sprint time, stroke length, stroke frequency and blood lactate were measured during the experiments. Results: The second 200-m swimming sprint performance in FC and BS treatments were significantly improved while comparing to Con (percent changes, FC vs. BS vs. Con, -0.78±0.91 vs. -0.29±1.27 vs. 0.91±1.78%, p＜.05), and the blood lactate concentration after treatment in FC treatment was also significantly lower than that in Con (FC vs. Con, 3.58±1.16 vs. 5.44±1.77 mmol•L^(-1), p＜.05). Conclusion: These results indicate that the active recovery used swimming style similar to previous swimming sprint exercise could improve the subsequent swimming sprint performance and physiological recovery.