Exercise Physiology, Institute for Human Movement Sciences, ETH Zurich, and Institute of Physiology and Center for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland.
Respir Physiol Neurobiol. 2009 Dec 31;169(3):282-90. doi: 10.1016/j.resp.2009.09.005. Epub 2009 Sep 15.
We compared the effects of the most commonly used respiratory muscle (RM) training regimes: RM endurance training (RMET; normocapnic hyperpnoea) and inspiratory resistive training (IMT), on RM performance. Twenty-six healthy men were randomized into 3 groups performing 4 weeks of RMET, IMT or sham-training. Lung function, RM strength and endurance were tested before and after training. RM fatigue during intermittent hyperpnoea was assessed by twitch oesophageal (P(oes,tw)) and gastric pressures with cervical and thoracic magnetic stimulation. Respiratory sensations (visual analogue scale, 0-10) and blood lactate concentrations ([La]) were assessed during hyperpnoea. RMET increased maximal voluntary ventilation while IMT increased maximal inspiratory pressure. Both RMET and IMT increased vital capacity and RM endurance, but only RMET improved the development of inspiratory muscle fatigue (from -31% to -21% P(oes,tw)), perception of respiratory exertion (4.2+/-0.1 to 2.3+/-2.3 points) and [La] (1.8+/-0.4 to 1.3+/-0.3 mmol l(-1)) during hyperpnoea. Whether these specific RMET-induced adaptations observed during hyperpnoea would translate into greater improvements in exercise performance compared to IMT remains to be investigated.
我们比较了最常用的呼吸肌 (RM) 训练方案的效果：RM 耐力训练 (RMET；常氧高通气) 和吸气阻力训练 (IMT)，以评估 RM 性能。26 名健康男性被随机分为 3 组，分别进行 4 周的 RMET、IMT 或假训练。在训练前后测试了肺功能、RM 力量和耐力。通过颈胸磁刺激评估间歇性高通气期间 RM 疲劳时的食管 (P(oes,tw)) 和胃压力的 twitch。在高通气期间评估呼吸感觉 (视觉模拟评分，0-10) 和血乳酸浓度 ([La])。RMET 增加了最大自主通气量，而 IMT 增加了最大吸气压力。RMET 和 IMT 均增加了肺活量和 RM 耐力，但只有 RMET 改善了吸气肌疲劳的发展（从-31%降至-21% P(oes,tw)）、呼吸费力的感知（从 4.2+/-0.1 降至 2.3+/-2.3 分）和高通气期间的 [La]（从 1.8+/-0.4 降至 1.3+/-0.3 mmol l(-1))。在高通气期间观察到的这些特定的 RMET 诱导的适应性是否会比 IMT 导致更大的运动表现改善，还有待研究。
