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Date Permissions Signed


Date of Award


Document Type

Masters Thesis

Degree Name

Master of Education (MEd)


Health and Human Development

First Advisor

Brilla, Lorraine R., 1955-

Second Advisor

Knutzen, Kathleen

Third Advisor

Row, Brandi


This study was designed to test the effects of inspiratory muscle training on core function compared to a typical core training program. One group performed inspiratory muscle training for six weeks while another performed a core training program of the same duration. A third group served as controls. Core function was assessed pre and post training using a side bridge, prone extension and Stabilizer test of transversus abdominis contraction. Maximal inspiratory pressure was also assessed before and after the six week training period. A two-way repeated measures analysis of variance (ANOVA) was used to determine the significance of inspiratory muscle training and core training on the tests of core function. The results showed a significant increase in maximal inspiratory pressure in the inspiratory muscle training group from 1.06(sd=0.37) to 1.72 cm H20 (sd=0.42), p=0.000. The core training group significantly improved their time of the prone extension test from 114.0 (sd=53.0) to 154.0 seconds (sd=77.6), p=0.014. The inspiratory muscle training group had a significantly improved performance over the core training group on the Stabilizer test, with the core training group actually showing a poorer performance following training. The inspiratory muscle training group improved on the Stabilizer test from a mean score of -6.9 mm Hg (sd=12.6) to -10.0 mm Hg (sd=11.0), p=0.038. Six weeks of core training and inspiratory muscle training can both improve core function and target different muscles.





Western Washington University

OCLC Number


Subject – LCSH

Exercise--Physiological aspects; Respiratory muscles; Muscle strength




masters theses




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Kinesiology Commons