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  • Title: Acute effects of inspiratory muscle warm-up on pulmonary function in healthy subjects.
    Author: Özdal M.
    Journal: Respir Physiol Neurobiol; 2016 Jun 15; 227():23-6. PubMed ID: 26903486.
    Abstract:
    The acute effects of inspiratory muscle warm-up on pulmonary functions were examined in 26 healthy male subjects using the pulmonary function test (PFT) in three different trials. The control trial (CON) did not involve inspiratory muscle warm-up, while the placebo (IMWp) and experimental (IMW) trials involved inspiratory muscle warm-up. There were no significant changes between the IMWp and CON trials (p>0.05). All the PFT measurements, including slow vital capacity, inspiratory vital capacity, forced vital capacity, forced expiratory volume in one second, maximal voluntary ventilation, and maximal inspiratory pressure were significantly increased by 3.55%, 12.52%, 5.00%, 2.75%, 2.66%, and 7.03% respectively, in the subjects in the IMW trial than those in the CON trial (p<0.05). These results show that inspiratory muscle warm-up improved the pulmonary functions. The mechanisms responsible for these improvements are probably associated with the concomitant increase in the inspiratory muscle strength, and the cooperation of the upper thorax, neck, and respiratory muscles, and increased level of reactive O2 species in muscle tissue, and potentially improvement of muscle O2 delivery-to-utilization. However, further investigation is required to determine the precise mechanisms responsible from among these candidates.
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