Advisor
Hayward, Reid
Committee Member
Hydock, David S. (David Scott)
Committee Member
Brustad, Robert John, 1952-
Department
Exercise Physiology
Institution
University of Northern Colorado
Type of Resources
Text
Place of Publication
Greeley (Colo.)
Publisher
University of Northern Colorado
Date Created
5-1-2015
Genre
Thesis
Extent
145 pages
Digital Origin
Born digital
Description
Many exercise testing protocols used in clinical settings have been developed for apparently healthy (AH) populations, but may be inappropriate for cancer survivors (CS) due to cancer and treatment-related toxicities. The Rocky Mountain Cancer Rehabilitation Institute (RMCRI) developed a cancer specific treadmill protocol to specifically address this issue. Purpose: To assess the validity of the RMCRI multistage treadmill protocol. Methods: 61 participants (45 CS, 16 AH controls) completed three different treadmill protocols, the Bruce (BTP) (for AH subjects), RMCRI without gas analysis (RWOGAP), and RMCRI with gas analysis (RGAP), to compare values of peak oxygen consumption (VO2peak). Participants completed the trials one week apart in random order. Obtained VO2peak values from RGAP were compared against estimated VO2peak from the same gas analysis (GA) test using the American College of Sports Medicine (ACSM) prediction equations (EVACSM). VO2peak from RGAP was also compared to the estimated values of VO2peak achieved during the Bruce protocol. Finally, VO2peak from RGAP was compared against predicted VO2peak values obtained from RWOGAP. Correlations were run between all protocols for each group. Results: For AH participants, no significant differences were observed between any of the VO2peak protocol values (p > 0.05), and positive strong correlations occurred between all protocols (r > 0.8). Among CS,VO2peak between RGAP and BTP were significantly different (p < 0.05). No significant differences in VO2peak values occurred between RGAP and EVACSM (p > 0.05). A positive strong correlation occurred between RGAP VO2peak and EVACSM (r = 0.90), and between VO2peak from the RGAP and RWOGAP (r = 0.81). A moderate positive correlation was observed between VO2peak values from BTP and RGAP (r = 0.51). CS group treadmill time was significantly greater on RWOGAP (12.6 ± 2.8 min) than RGAP (12.1 ± 2.8 min) (p < 0.05). Conclusion: Our findings suggest that the Bruce protocol is not an appropriate protocol for CS. GA equipment may also negatively affect treadmill performance as well. The observed high correlations and validity between predicted and observed VO2peak values suggest that the RMCRI cancer-specific protocol is a valid method of determining VO2peak and should be considered as the standard VO2peak treadmill test for cancer survivors.
Degree type
PhD
Degree Name
Doctoral
Organization
Rocky Mountain Cancer Rehabilitation Institute
Organization
University of Northern Colorado
Language
English
Local Identifiers
Shackelford_unco_0161D_10399
Rights Statement
Copyright is held by author.
