Inspiratory muscle training

Inspiratory muscle function may be impaired in patients with COPD, which may lead to dyspnoea [51], impaired exercise tolerance [23] and hypercapnia [52]. Several studies have therefore investigated the effects of inspiratory muscle training (IMT) on these parameters. IMT is generally started at a specific percentage of the maximal inspiratory pressure (PImax). The minimum load for achieving a real training effect is 30% of the PImax, which can be increased to 60-80%. Although most studies showed improved function of the inspiratory muscles after IMT [53-57], only a minority found a decrease in dyspnoea [55] or an improvement in exercise tolerance [54]. The reasons for these disappointing results might be an inadequate training protocol or not including appropriate patients in the study [58]. Gosselink and Decramer suggested that patients with ventilatory limitation might be ideal candidates [59]. In contrast to this, both Larson et al. [60] and Sanchez Riera et al. [61] recently showed positive results of IMT on both dyspnoea and exercise performance in patients with COPD in whom a ventilatory limitation was not established.

In summary, there is at present no strong evidence that IMT is beneficial in all patients with COPD. It might be beneficial in a specific group of patients with a ventilatory limitation. To further clarify the role of IMT in a rehabilitation programme, more needs to be known about the optimal candidates and how these patients should be trained.

Was this article helpful?

0 0
Sleep Apnea

Sleep Apnea

Have You Been Told Over And Over Again That You Snore A Lot, But You Choose To Ignore It? Have you been experiencing lack of sleep at night and find yourself waking up in the wee hours of the morning to find yourself gasping for air?

Get My Free Ebook

Post a comment