Critical power estimation provides a good approximation of the power output associated with the maximal metabolic steady state in both trained and untrained participants
| dc.contributor.advisor | Murias, Juan Manuel | |
| dc.contributor.advisor | Aboodarda, Saied Jalal | |
| dc.contributor.author | Lindstrom, Brynn Eric Alexander | |
| dc.contributor.committeemember | Holash, John | |
| dc.contributor.committeemember | Zagatto, Alessandro Moura | |
| dc.date | 2024-11 | |
| dc.date.accessioned | 2024-09-03T18:02:50Z | |
| dc.date.available | 2024-09-03T18:02:50Z | |
| dc.date.issued | 2024-08-29 | |
| dc.description.abstract | Critical power (CP) estimation is a well-established method to identify the power output (PO) associated with the maximal metabolic steady state (MMSS) of exercise. CP estimation requires multiple time to task failure (TTF) trials and the precision of this evaluation in untrained individuals could be questionable due to their inexperience with performing highly demanding efforts to volitional exhaustion. Thus, the goal of this study was to compare whether the accuracy of CP to approximate the MMSS was affected by the training status of the individuals. Participants underwent: i) a ramp incremental test to task failure to determine maximal oxygen consumption (V̇ O2max) and peak PO (POpeak); ii) a series of 4-5 TTF trials at average POs ranging from 70 to 90% of POpeak performed on separate days, to obtain TTF durations of ~3-15 min for CP estimations; iii) 2-3 30-min constant PO rides to establish MMSS. The PO associated to CP was significantly greater than that associated to MMSS in both untrained (155±39 W vs. 147±34 W, respectively) and trained (233±37 W vs. 225±39 W, respectively) individuals (F = 13.2, p = 0.001, η2 = 0.375, effect size d = 0.14). Despite this, no significant differences in the PO at CP and the PO at MMSS were observed between the untrained and trained groups (bias = 7.5 W for both groups; F = 0.01, p = 0.99, η2 = 0.001; statistical power = 99%) and for both groups, the biases were significantly greater than 0 (untrained z = 2.57; trained z = 2.95). The 95% CI for the LOA were -13 to 28 W, and -11 to 26 W for untrained and trained, respectively. These findings indicate that, despite a significant (albeit small) difference between CP and MMSS, the CP model provided a close approximation of the PO associated with the MMSS in both untrained and trained participants. This indicates that the quality of the CP model was not affected by training status, which suggests that previous experience with highly demanding exercise is not a key component of the quality of the prediction. | |
| dc.identifier.citation | Lindstrom, B. E. A. (2024). Critical power estimation provides a good approximation of the power output associated with the maximal metabolic steady state in both trained and untrained participants (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. | |
| dc.identifier.uri | https://hdl.handle.net/1880/119584 | |
| dc.language.iso | en | |
| dc.publisher.faculty | Graduate Studies | |
| dc.publisher.institution | University of Calgary | |
| dc.rights | University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. | |
| dc.subject | Exercise | |
| dc.subject | Physiology | |
| dc.subject | Critical Power | |
| dc.subject | Maximal Metabolic Steady State | |
| dc.subject | Maximal Lactate Steady State | |
| dc.subject.classification | Physiology | |
| dc.subject.classification | Education--Health | |
| dc.title | Critical power estimation provides a good approximation of the power output associated with the maximal metabolic steady state in both trained and untrained participants | |
| dc.type | master thesis | |
| thesis.degree.discipline | Kinesiology | |
| thesis.degree.grantor | University of Calgary | |
| thesis.degree.name | Master of Science (MSc) | |
| ucalgary.thesis.accesssetbystudent | I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible. |