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Date Permissions Signed

5-18-2011

Date of Award

2011

Document Type

Masters Thesis

Degree Name

Master of Education (MEd)

Department

Health and Human Development

First Advisor

Brilla, Lorraine R., 1955-

Second Advisor

Knutzen, Kathleen

Third Advisor

Suprak, David N. (David Nathan)

Abstract

The current study was conducted to determine if inspiratory muscle training (IMT) has an effect on anaerobic power during the final sprint phase of a time trial in trained cyclists. Twenty three trained cyclists were included in the data and were randomly assigned to one of two groups, a training or placebo group. Each group performed IMT, but the training group performed at 85% of their maximal inspiratory pressure (MIP) while the placebo group trained at 15%. MIP was measured pre and post training. One 15 km time trial was performed pre and post IMT. Heart rate (HR), ratings of perceived exertion (RPE), and arterial oxygen-hemoglobin saturation (SaO2) were recorded every five minutes during the time trial. Immediately following the 15 km time trial each subject performed a 30 second Wingate Anaerobic Test to measure anaerobic power. A two way ANOVA with one repeated factor was applied to test for differences across the tests and between the two groups. The results showed no significant increase in peak anaerobic power in either group. There was, however, a significant main effect for time in mean anaerobic power in both groups (placebo group increased 529.6 ±124.6 watts to 574.4 ± 99.3 and 612.3 ±81.7 watts to 632 ± 81.7 watts in the training group). There was a significant main effect for time when measuring the average SaO2 values in both the placebo and training group from 94.8 ±2.1 % to 95.3 ±1.8 % and 93.8 ± 1.9 % to 95.1 ± 1.6 %, respectively. MIP showed a significant main effect for time in both the placebo and training group from 110 ±40 cmH2O to 150 ±40 cmH2O and 130 ±30 cmH2O to 160 ± 20 cmH2O, respectively. There was no significant main effect over time for RPE, HR, or time trial time in either group. Six weeks of IMT, whether at 15% or 85% of MIP, can improve MIP, and mean anaerobic power during the final sprint phase of a time trial.

Type

Text

DOI

https://doi.org/10.25710/n438-9f49

Publisher

Western Washington University

OCLC Number

743838394

Subject – LCSH

Cycling--Physiological aspects; Respiratory muscles

Format

application/pdf

Genre/Form

masters theses

Language

English

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this thesis for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.

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