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dc.contributor.advisorJones, Lynnette
dc.contributor.advisorBaldi, Chris
dc.contributor.authorBaxter, Samuel Christopher Dean
dc.date.available2021-07-22T00:43:04Z
dc.date.copyright2021
dc.identifier.citationBaxter, S. C. D. (2021). The effects of a 20-week HIFT circuit on cardiorespiratory fitness, functional fitness, muscle strength and body composition in recreationally active breast cancer survivors (Thesis, Master of Science). University of Otago. Retrieved from http://hdl.handle.net/10523/12131en
dc.identifier.urihttp://hdl.handle.net/10523/12131
dc.description.abstractCancer treatment increases survivors risk for cardiorespiratory and cardiovascular diseases, alterations of body composition, and loss of muscular strength. Regular physical activity can be an effective strategy to reduce the risk of non-cancer related death among cancer survivors. Recently, high intensity functional training (HIFT) has been identified as an effective modality for improving fitness, body composition and muscle strength in cancer survivors. The primary aim of this study was to determine the effect of HIFT on cardiorespiratory fitness, cardiovascular health, physical function, and body composition in breast cancer survivors previously treated with chemotherapy and/or radiation therapy. It was hypothesised that high intensity functional training will be safe and effective at increasing fitness, body composition and strength in breast cancer survivors, with a null hypothesis of no change seen in these variables. The exercise intervention involved a 20-week HIFT program, utilizing a variety of exercise modalities, including aerobic (walking/running, rowing, cycling), resistance (machines, dumbbells, kettle bells) and body weight exercises (e.g. squats, push ups). Participants exercised twice weekly, with each session lasting approximately 30-minutes. The HIFT intervention sessions included 12 exercise stations, with participants exercising at each station for 2-minutes, before having 30-seconds to move to the next station. Physical function was measures through balance and functional tests, cardiorespiratory fitness assessed through V̇ O2peak tests, strength tests through a variety of one-repetition max tests and body composition through BIA. Significant improvements were observed in lift and carry (p=0.17), weighted stair climb (p=.012), posterior leg reach (p=.014), thigh extension (p=.007) and flexion (p=.027) strength and systolic blood pressure (p=.012). Favourable, but non-significant (p>.05), effects on body composition were observed. No significant (p>0.05) change was seen in bench press 1RM, handgrip strength or V̇ O2peak. This study showed that HIFT can provide significant improvements in functional capacity and lower body strength. Participants in the current study were already physically active, which may account for the lack of change in upper body strength and cardiorespiratory fitness. No significant reductions were observed in any variable, suggesting that HIFT is effective at maintaining and, in some cases, improving aspects of fitness in physically active breast cancer survivors.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherUniversity of Otago
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectBreast cancer
dc.subjectHIFT
dc.subjectCancer
dc.subjectexercise
dc.subjectfunctional training
dc.titleThe effects of a 20-week HIFT circuit on cardiorespiratory fitness, functional fitness, muscle strength and body composition in recreationally active breast cancer survivors
dc.typeThesis
dc.date.updated2021-07-14T23:34:01Z
dc.language.rfc3066en
thesis.degree.disciplinePhysical Education, Sport and Exercise Science
thesis.degree.nameMaster of Science
thesis.degree.grantorUniversity of Otago
thesis.degree.levelMasters
otago.openaccessOpen
otago.evidence.presentYes
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