Doctor of Philosophy (PhD)
Effect of a Specific Respiratory Warm-up on Run Performance, Pulmonary Functions, and Rating of Perceived Breathing The purpose of this study was to evaluate the effect of a respiratory warm-up for five minutes using an inspiratory/expiratory (IEC) device on pulmonary function (PFT) (FVC, FEV©û, FEF 25-75%, PEF), rate of perceived exertional (RPE) breathing, and performance time [300 yard shuttle run (300y) and 1.5 mile run (1.5m)] in asthmatics and non-asthmatics. Ten non-asthmatics males (22.6¡¾7.4 years) participated in phase I, twenty non-asthmatic males (24.2¡¾9.8 years) in phase II, and five asthmatics (20.8¡¾3.2 years) in phase III of this study. The Phase I pilot study examined three breathing warm-up (inspiratory only, expiratory only, and combined IEC). Results suggest the IEC produced the most favorable responses (greatest system stress, highest recovery data). In phase II and III, subjects performed initial resting PFT (asthmatics performed an additional five-minute post medication resting PFT), followed by five-minutes of a no-warm-up controlled condition (CC) or five-minutes of IEC. After completion of the CC or the IEC, subjects rested for five-minutes and then performed either a 300y or a 1.5m for time. After the runs, subjects performed one-minute recovery intervals of PF and RPE up to 15-minutes as well as five-minute intervals of PFT up to 15-minutes. Paired sample t-tests were calculated to compare CC to IEC across the two runs with statistical significance for these correlations set at p ¡Â 0.05*. The results indicated that non-asthmatics benefited from the IEC and improved performance by 3.2% (average of 25 seconds) in the 1.5m over the CC [M=13.1075 v. 12.6830, SD=2.19429 v. 1.85474, p= 0.044*]. Asthmatics increased their FEV©û at five-minutes of recovery after the IEC verses the CC for the 1.5m [M=3.3120 v. 3.4280, SD=0.51339 v. 0.54929, p= 0.019*]. The results suggest that a respiratory warm-up could be beneficial by improved performance and increased pulmonary functions to asthmatics and non-asthmatics alike.
Document Availability at the Time of Submission
Student has submitted appropriate documentation to restrict access to LSU for 365 days after which the document will be released for worldwide access.
Guillot, Dennis Jonathan, "The Effects of Respiratory Muscle Warm-up on Exercise Performance and Pulmonary Functions" (2014). LSU Doctoral Dissertations. 2095.