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DC Field | Value | Language |
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dc.contributor.advisor | Bray, Steven | - |
dc.contributor.author | Kovacevic, Dusan | - |
dc.date.accessioned | 2022-10-11T13:12:53Z | - |
dc.date.available | 2022-10-11T13:12:53Z | - |
dc.date.issued | 2022 | - |
dc.identifier.uri | http://hdl.handle.net/11375/27956 | - |
dc.description.abstract | People’s decisions to engage in exercise depend on the reinforcing value of exercise relative to competing sedentary alternatives, which may differ based on the type and duration of exercise. Mental fatigue is a commonly cited barrier to exercise and biases people’s choices towards sedentary behaviour versus exercise. However, the effects of mental fatigue on the relative reinforcing value (RRV) of exercise has not yet been examined. This study investigated the effects of mental fatigue, exercise type, and exercise duration on the RRV of exercise. In addition, this study compared ratings of liking and enjoyment for two common types of exercise, high intensity interval training (HIIT) and moderate intensity training (MIT), and assessed whether exercise enjoyment and mental fatigue predict the RRV of exercise. Participants (N = 48, Mage = 19.73 2.50 years) sampled a 6-min HIIT task as well as a 6-min MIT task and completed ratings of liking and enjoyment. Participants were then randomly assigned to engage in either a high cognitive demand (HCD) task, intended to increase levels of mental fatigue, or a low cognitive demand (LCD) task, intended to maintain levels of mental fatigue. The RRV of exercise was then assessed using a questionnaire that asked participants to make a series of choices between gaining access to a type of exercise (i.e., HIIT or MIT) versus a sedentary behaviour for a duration of time (i.e., 10, 20, or 30 min), with each option associated with a work requirement in the form of computer keyboard button presses. The questionnaire was repeated to calculate an RRV for each exercise type and duration combination. Results of the 2 (group; LCD, HCD) X 2 (type; HIIT, MIT) X 3 (duration; 10, 20, 30) mixed ANCOVA revealed a significant main effect of duration on the RRV of exercise (p < .001), indicating that people are less willing to work for access to longer durations of exercise compared to shorter durations. No other significant main effects or interactions were observed (ps > .13). Separate paired samples t-tests revealed that participants reported significantly greater ratings of both liking (p = .007) and enjoyment (p = .01) for the HIIT task compared to the MIT task. Further, results of hierarchical linear regression analyses revealed that HIIT enjoyment scores predicted the RRV for 10 min of HIIT (p = .03), with higher enjoyment predicting a greater RRV. No other predictors were significant (ps > .07). Overall, findings provide support for the promotion of shorter, intermittent bouts of exercise rather than longer continuous bouts. Given more positive affective responses to HIIT, individuals may be more likely to adopt and maintain exercise programs involving HIIT rather than MIT. Findings also suggest that increasing exercise enjoyment may be important for increasing the RRV of exercise, which in turn, may help support long-term exercise participation. | en_US |
dc.language.iso | en | en_US |
dc.title | Effects of mental fatigue, exercise type, and exercise duration on the relative reinforcing value of exercise | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Kinesiology | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MSc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Kovacevic_Dusan_2022September_MSc.pdf | 1.74 MB | Adobe PDF | View/Open |
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