Weiner P, Magadle R, Beckerman M, Weiner M, Berar-Yanay N
Dept of Medicine A, Hillel Yaffe Medical Center, Hadera, Israel.
Eur Respir J. 2004 Jan;23(1):61-5. doi: 10.1183/09031936.03.00059503.
In most chronic obstructive pulmonary disease (COPD) patients, dyspnoea and functional exercise capacity may improve as a result of inspiratory muscle training (IMT). However, the long-term benefits of IMT have been investigated to a much lesser extent. The present study investigated the short-term and long-term benefits of IMT on inspiratory muscle performance (strength and endurance), exercise capacity and the perception of dyspnoea. Thirty-eight patients with significant COPD had 3 months of basic IMT and were then randomised into a group that received maintenance IMT for the next year, and a group that got training with very low load. Following the basic training there was a statistically significant increase in inspiratory muscle performance, 6-min walk test (6MWT), and a decrease in the dyspnoea. During the second stage of the study, the training group continued to maintain the improvement in all parameters, while there was already deterioration in the inspiratory muscle performance, exercise capacity and dyspnoea in the low intensity group during the 6-12 month period. The present study concludes that, in patients with significant chronic obstructive pulmonary disease, inspiratory muscle training results in improvement in performance, exercise capacity and in the sensation of dyspnoea. The benefits of 12-weeks of inspiratory muscle training decline gradually over 1 yr of follow-up if maintenance training is not performed.
在大多数慢性阻塞性肺疾病（COPD）患者中，吸气肌训练（IMT）可能会改善呼吸困难和功能运动能力。然而，IMT的长期益处研究得较少。本研究调查了IMT对吸气肌性能（力量和耐力）、运动能力和呼吸困难感知的短期和长期益处。38例重度COPD患者进行了3个月的基础IMT，然后随机分为两组，一组在接下来的一年接受维持IMT，另一组接受极低负荷训练。基础训练后，吸气肌性能、6分钟步行试验（6MWT）有统计学显著提高，呼吸困难减轻。在研究的第二阶段，训练组继续保持所有参数的改善，而低强度组在6 - 12个月期间吸气肌性能、运动能力和呼吸困难已经恶化。本研究得出结论，在重度慢性阻塞性肺疾病患者中，吸气肌训练可改善性能、运动能力和呼吸困难感觉。如果不进行维持训练，12周吸气肌训练的益处会在1年的随访中逐渐下降。
