吸氣肌熱身對田徑選手耐力運動表現之影響

Abstract

目的：本研究在探討吸氣肌熱身田徑選手耐力運動表現的影響。方法：以10名大專男性優秀田徑選手為受試對象（年齡，20 ± 1.25歲；身高，175.1 ± 4.12公分；體重，63.8 ± 4.42公斤），使用重覆量數、平衡次序原則的實驗設計，所有受試者須進行三種不同實驗處理，包括吸氣肌熱身處理 (inspiratory muscle warm-up, IMW) 、安慰劑處理 (placebo, PLA) 與控制處理 (control, CON) 。控制處理不進行吸氣肌熱身，而安慰劑處理與吸氣肌熱身處理分別以強度15%及40%的最大吸氣壓力 (maximum inspiratory mouth pressures, PImax) ，進行2組30下的吸氣肌熱身。實驗處理後，受試者在跑步機上，以100%最大攝氧量速度(vVO2max) 跑步直到衰竭。實驗過程中，分析跑步距離、血乳酸、RPE (rating of perceived exertion) 與RPB (rating of perceived breathlessness)。結果：在血乳酸、RPE與RPB，三種實驗處理間皆未達顯著差異。在耐力表現部分IMW組顯著高於CON與PLA組（CON vs. PLA vs. IMW，1532 ± 359.15 vs. 1685.2 ± 456.45 vs. 1930.40 ± 544.56 公尺，F＝10.552，p＜.05）。結論：本研究結果顯示，吸氣肌熱身可能可以提升田徑選手耐力運動表現，然而，這種熱身活動並未能改善血乳酸的變化。Purpose: To investigate the effect of inspiratory muscle warm-up on endurance performance in athletes. Methods: Ten male athletes (age, 20 ± 1.25 yrs; height, 175.1 ± 4.12 cm; weight, 63.8 ± 4.42 kg) were voluntarily recruited in this repeated measures and crossover designed study. All participants were requested to perform three different experimental treatments, including inspiratory muscle warm-up (IMW), placebo (PLA) and control (CON). The control trial was without IM warm-up while the PLA and IMW were with IM warm-up by performing two sets of 30 breaths at 15% and 40% maximum inspiratory mouth pressure (PImax), respectively. After treatment, participants ran on treadmill with 100% vVO2max until exhaustion. The running distance, blood lactate, ratings of perceived exertion (RPE), and rating of perceived breathlessness (RPB), were measured during the experiments. Results: No significant differences were found on the blood lactate, RPE and RPB three treatments. The running distance in IMW were significantly higher than in CON and PLA (CON vs. PLA vs. IMW，1532 ± 359.15 vs. 1685.2 ± 456.45 vs. 1930.40 ± 544.56 m，F＝10.552，p＜.05). Conclusion: These results indicate that the IMW might improve endurance performance in athletes.