Skip Navigation LinksHome > July 2011 - Volume 43 - Issue 7 > Inspiratory Muscle Training in Type 2 Diabetes with Inspirat...
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Medicine & Science in Sports & Exercise:
doi: 10.1249/MSS.0b013e31820a7c12
Clinical Sciences

Inspiratory Muscle Training in Type 2 Diabetes with Inspiratory Muscle Weakness

CORRÊA, ANA PAULA S.1; RIBEIRO, JORGE P.1,2; BALZAN, FERNANDA MACHADO1; MUNDSTOCK, LORENA1; FERLIN, ELTON LUIZ1; MORAES, RUY SILVEIRA1,2

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Abstract

Purpose: Patients with type 2 diabetes mellitus may present weakness of the inspiratory muscles. We tested the hypothesis that inspiratory muscle training (IMT) could improve inspiratory muscle strength, pulmonary function, functional capacity, and autonomic modulation in patients with type 2 diabetes and weakness of the inspiratory muscles.

Methods: Maximal inspiratory muscle pressure (PImax) was evaluated in a sample of 148 patients with type 2 diabetes. Of these, 25 patients with PImax <70% of predicted were randomized to an 8-wk program of IMT (n = 12) or placebo-IMT (n = 13). PImax, inspiratory muscle endurance time, pulmonary function, peak oxygen uptake, and HR variability were evaluated before and after intervention.

Results: The prevalence of inspiratory muscle weakness was 29%. IMT significantly increased the PImax (118%) and the inspiratory muscle endurance time (495%), with no changes in pulmonary function, functional capacity, or autonomic modulation. There were no significant changes with placebo-IMT.

Conclusions: Patients with type 2 diabetes may frequently present inspiratory muscle weakness. In these patients, IMT improves inspiratory muscle function with no consequences in functional capacity or autonomic modulation.

©2011The American College of Sports Medicine

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