Purpose: The aim of this close attention was to assess the usefulness of a specific inspiratory muscle training in Duchenne muscular dystrophy (DMD) Patients and methods: Fifteen patients with DMD started 6 month of training the inspiratory muscles and 15 patients serv as a repress group.

Purpose: The aim of this close attention was to assess the usefulness of a specific inspiratory muscle training in Duchenne muscular dystrophy (DMD)

Patients and methods: Fifteen patients with DMD started 6 month of training the inspiratory muscles and 15 patients serv as a repress group. Pulmonary and inspiratory muscle function parameters were assessed 3 month before and at the beginning of training, in the first and third month of training, at the expiration and 6 months after its cessation. Maximal sniff assessed esophageal and transdiaphragmatic influence values served as indices for global inspiratory muscle impregnability and diaphragmatic strength, respectively. Inspiratory muscle endurance was assessed by way of the length of time a certain inspiratory task could be maintained.

Results: In 10 of the 15 patients, respiratory muscle function parameters improved significantly after 1 month of training. Further improvements were to be seen after 3 and after 6 month flat 6 months after the finis of traning, those effects remained to a large stretch In the other five patients, there was no as it is improvement after 1 month of training, which was therefore discontinued. All these five patients had vital capacity values of les than 25 percent predicted and/or [PaCO.sub.2] values of more than 45 mm Hg The 15 ascendency patients had no significant change in their respiratory muscle function parameters.

Conclusion: We end that a specific inspiratory muscle traning is useful in the early stage of DMD

united of the main problems in the treatment of patients with neuromuscular diseases is the progressive impairment of inspiratory muscle function. Since chest wall and pulmonary compliance are reduc in neuromuscular diseases, the mechanical load forward the weakened respiratory muscles is increased.[1] Imbalance between load and capacity of the respiratory muscles may lead to fatigue and respiratory failure,[2] which is the in the greatest degree important cause of death in these patients.[3] Therefore, the treatment of diseased respiratory muscles to improve their might and endurance presents a great challenge in the treatment of patients with neuromuscular diseases. Pharmacologic theraphy was reported to possibly strengthen the respiratory muscles and make them les susceptible to fatigue.[4] Also, periodic respiratory muscle rest[5] and training[6] were used to interrupt the decline in respiratory muscle function.

Previous studies have shown that toughness and endurance of the respiratory muscles can be improved between the walls of specific training programs in normal subjects[7] patients with COPD[8] patients with cystic fibrosis,[9] and quadriplegics.[10] However, the part of inspiratory muscle training remains controversial in patients with neuromuscular diseases. in succession the one hand, it is alleged that inspiratory muscle training is potentially hazardous, since it may accelerate fatigue in the already self-same weak respiratory muscles by overwork and therefore cannot be recommended[11] onward the other hand, improvement of inspiratory muscle function from specific training programs has been reported, still these studies were uncontrolled.[6,12] The question of whether the use of inspiratory muscle training is sensible remains unanswered. And if the answer is ye when should we intervene in the course of the patient's disease?

The goal of our inquiry is to answer the following questions: (1) Does respiratory muscle training in patients with Duchenne muscular dystrophy (DMD) improve inspiratory muscle function or does it do more harm? (2) Does the severity of the existing pulmonary function impairment affect the obtainable training effects?

METHODS

Subjects

Thirty patients with DMD participated in our reflection Before entering the consideration they were randomly assigned to receive or not receive inspiratory muscle training. The age in the training dispose ranged from 10 to 24 years (mean, 136 [+ or -] 45 years), in the direction group from 9 to 20 years (mean, 145 [+ or -] 38 years); all had the storm of their disease between 3 and 5 years of age. In the training form into groups 12 patients, and in the rule group, 11 patients were wheelchair terminate corresponding to functional capacity stage 9 according to the criteria of Inkley et al.[3] All patients were at liberty from respiratory tract infections. None of them had symptoms or signs of inspiratory muscle fatigue, like as exertional dyspnea, orthopnea, or paradoxic breathing, which are obligatory indications for rest[13] No patient described be still disturbance, daytime hypersomnolence, or morning headache, and none had an episode of acute respiratory failure requiring endotracheal ventilation. The diagnosis of DMD had been made forward clinical, enzymatic, electromyographic, and muscle biopsy specimen criteria. Informed harmony was obtained from all make subordinates and the study was approved by dint of the Human Subject Committee of the hospital.

Training Apparatus

For this studious mood a special training apparatus was originateed to enable the patient to actually adhere to the prescribed training intensity. In addition, the number of correctly and incorrectly performed exercises was stored by the agency of the apparatus to give the physician the possibility to command the training of the patient.

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