Benefits of Concurrent Aerobic-Resistance Interval Exercise in Patients with Chronic Obstructive Pulmonary Disease

C. Aristizabal, Oscar H. Ortiz, Emily J. Walsh, M. Leone, A. Comtois
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Abstract

Background: Physical training of lower leg skeletal muscle has been shown to increase exercise tolerance in Chronic Obstructive Pulmonary Disease (COPD) patients. The objective of this study was to measure the effect of concurrent aerobic-resistance interval exercise on lower leg muscle function and local muscle tissue oxygenation in the vastus lateralis muscle (VLM) of COPD patients. Methods: Peripheral muscle oxygenation in the VLM was measured using Near Infrared Spectrometry (NIRS) during the sixminute walk test (6MWT) in 15 COPD patients: Experimental (EXP., n = 9) and control (CTL., n = 6). Both groups trained for 3 weeks (1 hour/day and 5 days/ week). Training sessions consisted of upper body strength exercises for 20 minutes. Next, the CTL. Group performed 30 minutes of aerobic exercise (motorized treadmill or stationary bike), while the EXP. group completed 30 minutes of aerobic-resistance (concurrent training) interval exercise (non-motorized treadmill). Pre and post-intervention NIRS measurements included oxyhemoglobin (O2Hb), deoxyhemoglobin (HHb), hemoglobin difference (HbDif), total hemoglobin (tHb), and tissue saturation index (TSI). Systemic arterial oxygen saturation (SPO2), heart rate and the rating of perceived exertion with the modified Borg scale were also measured pre and post-intervention during the 6MWT. Results: All patients were able to complete three weeks of training. A significant increase in the 6MWT (51.4%, p < 0.05) distance was noted in the EXP. group and in the VLM HbDiff (69%, p < 0.05). No significant differences were observed in the other muscle oxygenation variables. Conclusion: Concurrent aerobic-resistance interval exercise increases the total distance covered at the 6MWT (increased functional capacity) and muscle oxygen extraction.
同时有氧-阻力间歇运动对慢性阻塞性肺疾病患者的益处
背景:下肢骨骼肌的体能训练已被证明可以增加慢性阻塞性肺疾病(COPD)患者的运动耐量。本研究的目的是测量同步有氧-阻力间歇运动对COPD患者下肢肌肉功能和股外侧肌(VLM)局部肌肉组织氧合的影响。方法:在6分钟步行试验(6MWT)期间,采用近红外光谱法(NIRS)测量15例COPD患者VLM周围肌肉氧合:实验组(EXP., n = 9)和对照组(CTL.)。, n = 6)。两组均训练3周(1小时/天,5天/周)。训练包括20分钟的上肢力量练习。接下来是CTL。实验组进行30分钟的有氧运动(机动跑步机或固定自行车),实验组进行30分钟的有氧-阻力(同步训练)间歇运动(非机动跑步机)。干预前后的近红外光谱测量包括氧合血红蛋白(O2Hb)、脱氧血红蛋白(hbb)、血红蛋白差(HbDif)、总血红蛋白(tHb)和组织饱和指数(TSI)。在6MWT期间,还测量了干预前后的全身动脉氧饱和度(SPO2)、心率和用改良Borg量表评定的感知运动等级。结果:所有患者均能完成三周的训练。exp1组6MWT距离(51.4%,p < 0.05)显著增加,VLM组HbDiff距离(69%,p < 0.05)显著增加。在其他肌肉氧合变量中没有观察到显著差异。结论:同时进行有氧-阻力间歇运动增加了6MWT时的总距离(增加了功能容量)和肌肉吸氧量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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