Journal article
The effect of exercise hyperpnea on gross efficiency and anaerobic capacity estimates during a 3-min cycle time trial
Journal of Applied Physiology, Vol.134(2), pp.253-263
2023
PMID: 36548515
Abstract
This study aimed to analyze the effect of exercise-induced hyperpnea on gross efficiency (GE) and anaerobic capacity estimates during a self-paced 3-min supramaximal cycle time trial (TT). Fourteen highly trained male cyclists performed 7 × 4-min submaximal stages, a 6-min passive rest, a 3-min TT, a 5-min passive rest, and a 6-min submaximal stage. Three models were based on the 7 × 4-min linear regression extrapolation method, using 1) the conventional model (7−YLIN); 2) the same 7−YLIN model but correcting for the additional ventilatory cost (i.e., hyperpnea) (7−YLIN-V-cor); and 3) accounting for linearly declining GE during the TT (7−YLIN-D). The other three models were based on GE from the last submaximal stage, using the conventional model (GELAST) and the same modifications as described for 7+YLIN, i.e., 1) GELAST, 2) GELAST-V-cor, and 3) GELAST-D. The GELAST model generated 18% higher values of anaerobic capacity than the 7−YLIN model (P < 0.05). During the TT, the hyperpnea-corrected model (i.e., 7-YLIN-V-cor or GELAST-V-cor) generated, compared with the respective conventional model (i.e., 7-YLIN or GELAST), ∼0.7 percentage points lower GE and ∼11% higher anaerobic capacity (all, P < 0.05). The post-TT GE was 1.9 percentage points lower (P < 0.001) and the 7-YLIN-D or GELAST-D model generated, compared with the respective conventional model, a lower GE (∼1.0 percentage points) and ∼17% higher anaerobic capacity during the TT (all, P < 0.05). In conclusion, the correction for a declining GE due to hyperpnea during a supramaximal TT resulted in an increased required total metabolic rate and anaerobic energy expenditure compared with the conventional models.
Details
- Title
- The effect of exercise hyperpnea on gross efficiency and anaerobic capacity estimates during a 3-min cycle time trial
- Authors
- Erik P Andersson (Corresponding Author) - Mid Sweden UniversityThomas L Stöggl - University of SalzburgPhilipp Bachl - Mid Sweden UniversityJohn O Osborne - UiT The Arctic University of Norway
- Publication details
- Journal of Applied Physiology, Vol.134(2), pp.253-263
- Publisher
- American Physiological Society
- Date published
- 2023
- DOI
- 10.1152/japplphysiol.00517.2022
- ISSN
- 1522-1601
- PMID
- 36548515
- Data Availability
- Data will be made available upon reasonable request.
- Grant note
- This study was supported financially by the Swedish Research Council for Sport Science (CIF, P2020-0157) and part-financed by the Mid Sweden University and Östersund City Council financialagreement.
- Organisation Unit
- School of Health
- Language
- English
- Record Identifier
- 991112752002621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Physiology
- Sport Sciences