2026-09-26T07:38:16Zhttps://openrepository.aut.ac.nz/server/oai/requestoai:openrepository.aut.ac.nz:10292/108002026-06-13T16:37:20Zcom_10292_3col_10292_5
AUT Research Repository
advisor
Duncan, Scott
advisor
Dreyer, Lukas
author
Tahana, Leon Winstone
2017-09-15T03:13:55Z
2017-09-15T03:13:55Z
2017
https://hdl.handle.net/10292/10800
Sedentary secular, domestic, and recreational behaviour is a major risk factor (RF) for cardiovascular disease (CVD). This study examines the quality of at-home physical activity (PA) and how it relates to physical fitness (PF) before and during 12 weeks of supervised cardiac rehabilitation (CR) in a group of medically referred cardiac patients. PA was measured with an accelerometer (ActiGraph wGT3X-BT), pre and post-CR, to determine if patient at-home PA behaviour changes during supervised CR. Cardiac patients’ (n=27), haemodynamic and morphological measurements were taken. Direct measurement of the volume of oxygen consumption (VO2peak) was done with respiratory gas analysis during a submaximal cycle ergometer test to determine PF. Analysis of covariance (ANCOVA) was used to assess whether exercise-induced improvement in cardiovascular and muscular capacity (CVaM-capacity) influences the relationships between stages of PF (pre vs. post-CR) and PA behaviour. Pre-CR power output and CVaM-capacity correlated moderately with overall at-home caloric expenditure per week (r=0.47 and 0.53). Calculated r2 values indicate that power output and peak oxygen consumption contribute between 22.1% and 28.1% to the variance of weekly PA energy consumption. At-home PA behaviour (volume and intensity) changed significantly (p≤0.001) after 12 weeks of supervised CR, with moderate and vigorous PA increasing, and sedentary, and light PA decreasing. Future CR research should consider how at-home PA behaviour and other RF inter-associations affect a patient’s cardiac health and CR effectiveness.
en
Cardiac rehabilitation
Physical activity
Behaviour
Functional/ cardiovascular capacity
Accelerometer
Change in Physical Activity During Active Treatment of Cardiac Patients
Thesis
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URL
https://openrepository.aut.ac.nz/bitstreams/f3f15ff5-4bb1-4d79-a9cf-98616f86e014/download
File
MD5
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application/pdf
TahanaL.pdf
URL
https://openrepository.aut.ac.nz/bitstreams/d47f57e7-7996-4613-ac10-5d5d4331ce8f/download
File
MD5
d27d6938f550c978017e151fcdaa7cf2
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text/plain
TahanaL.pdf.txt