Oueslati Ferid, Berriri Ahmed, Boone Jan, Ahmaidi Said
EA-3300: APERE, UFR-STAPS, Université de Picardie Jules Verne, Amiens, France; Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada; UR12ES06, Medicine Department, University of Sousse, Sousse, Tunisia.
EA-3300: APERE, UFR-STAPS, Université de Picardie Jules Verne, Amiens, France.
Respir Physiol Neurobiol. 2018 Jan;248:25-30. doi: 10.1016/j.resp.2017.11.005. Epub 2017 Nov 17.
The respiratory muscle fatigue seems to be able to limit exercise performance and may influence the determination of maximal oxygen uptake (V̇O) or maximum aerobic work rate during maximal incremental test. The aim of this study was therefore to investigate whether maximal incremental exercise decreases respiratory muscle strength. We hypothesized that respiratory muscle strength (maximal pressure) will decrease after maximal incremental exercise to exhaustion. 36 runners and 23 cyclists completed a maximal incremental test on a treadmill or a cycle ergometer with continuous monitoring of expired gases. Maximal inspiratory (MIP) and expiratory (MEP) pressure measurements were taken at rest and post- exercise. At rest, the MIP and MEP were 140±25 and 172±27 in runners vs. 115±26 and 146±33 in cyclists (p<0.05 between groups, respectively). The rest values of MIP and MEP were correlated to the V̇O in all athletes, r=0.34, p<0.01 and r=0.36, p<0.01, respectively. At exhaustion, the MIP and MEP decreased significantly post- test by 13±7% and 13±5% in runners vs. 17±11% and 15±10% in cyclists (p>0.05), respectively. Our results suggest that respiratory muscle strength is decreased following maximal incremental exercise in trained runners and cyclists.
呼吸肌疲劳似乎会限制运动表现，并可能影响最大摄氧量（V̇O）的测定或最大递增测试期间的最大有氧工作率。因此，本研究的目的是调查最大递增运动是否会降低呼吸肌力量。我们假设，最大递增运动至疲劳后，呼吸肌力量（最大压力）将会下降。36名跑步者和23名骑自行车的人在跑步机或自行车测力计上完成了一次最大递增测试，并持续监测呼出气体。在休息时和运动后测量最大吸气压力（MIP）和最大呼气压力（MEP）。休息时，跑步者的MIP和MEP分别为140±25和172±27，而骑自行车的人分别为115±26和146±33（两组之间p<0.05）。所有运动员的MIP和MEP的休息值均与V̇O相关，r分别为0.34，p<0.01和0.36，p<0.01。在疲劳时，测试后跑步者的MIP和MEP分别显著下降了13±7%和13±5%，而骑自行车的人分别下降了17±11%和15±10%（p>0.05）。我们的结果表明，训练有素的跑步者和骑自行车的人在进行最大递增运动后，呼吸肌力量会下降。
