Effect Of Moderate Exercise Paper Essay Assignment Paper

In chronic heart failure (CHF) the consequences of impaired cardiac and respiratory function may be additive, and independently contribute to reduce oxygen saturation and the ability to do physical work. Although previous studies of CHF have shown respiratory dysfunction and the impact controlled breathing has on autonomic control and arterial oxygen saturation (SaO2), the optimum breathing pattern is not known (Marecal, 1981).

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Our aim was to establish the optimum breathing rate on SaO2 in patients with CHF and healthy controls, and then assess the effect the optimum rate had on respiratory indices and exercise capacity in CHF patients who were randomly allocated training to this optimum rate.

Methods

We enrolled 50 patients with stable CHF who had had no changes in their signs and symptoms in the 2 weeks before examination and 11 healthy volunteers (controls). The exclusion criteria were pulmonary disease and smoking in the 2 years before the start of the study. None of the controls were smokers and all had normal lung function. The study protocol was approved by the local ethics committee and all individuals gave informed consent to take part (Yeung et al, 1996)

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