Time to Exhaustion at the Respiratory Compensation Point in Recreational Cyclists
Bibliographic Data
| ID | 15515364 |
|---|---|
| Authors | Susana Moral-González (Universidad Europea de Madrid), Javier Gonzalez-Sanchez (0000-0001-6444-1858, Universidad Europea de Madrid), Pedro L Valenzuela (0000-0003-1730-3369, Universidad de Alcalá, corresponding author), Sonia García-Merino (0000-0001-7975-9842, Universidad Europea de Madrid), Carlos Barbado (Universidad Europea de Madrid), Alejandro Lucia (0000-0002-3025-2060, Research Institute Hospital 12 de Octubre), Carl Foster (0009-0008-1406-9283, University of Wisconsin–La Crosse), David Barranco‐Gil (0000-0002-4869-5900, Universidad Europea de Madrid) |
| Year | 2020 |
| Volume | 17 |
| Issue | 17 |
| Pages | 6352-6352 |
| Publication date | 2020-08-31 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph17176352 |
| PMID | 32878259 |
| OpenAlex | W3081768617 |
| Language | EN |
| Citations received | 1 |
| References cited | 28 |
The time to exhaustion (t lim ) at the respiratory compensation point (RCP) and whether a physiological steady state is observed at this workload remains unknown. Thus, this study analyzed t lim at the power output eliciting the RCP (t lim at RCP), the oxygen uptake (VO 2 ) response to this effort, and the influence of endurance fitness. Sixty male recreational cyclists (peak oxygen uptake [VO 2peak ] 40-60 mL∙kg∙min -1 ) performed an incremental test to determine the RCP, VO 2peak , and maximal aerobic power (MAP). They also performed constant-load tests to determine the t lim at RCP and t lim at MAP. Participants were divided based on their VO 2peak into a low-performance group (LP, n = 30) and a high-performance group (HP, n = 30). The t lim at RCP averaged 20 min 32 s ± 5 min 42 s, with a high between-subject variability (coefficient of variation 28%) but with no differences between groups ( p = 0.788, effect size = 0.06). No consistent relationships were found between the t lim at RCP and the different fitness markers analyzed (RCP, power output (PO) at RCP, VO 2peak , MAP, or t lim at MAP; all p > 0.05). VO 2 remained steady overall during the t lim test, although a VO 2 slow component (i.e., an increase in VO 2 >200 mL·min -1 from the third min to the end of the tests) was present in 33% and 40% of the participants in HP and LP, respectively. In summary, the PO at RCP could be maintained for about 20 min. However, there was a high between-subject variability in both the t lim and in the VO 2 response to this effort that seemed to be independent of fitness level, which raises concerns on the suitability of this test for fitness assessment
Anaerobic exercise · Animal science · Blood pressure · Heart rate · Physical therapy · Respiratory compensation · Ventilatory threshold · VO2 max · Workload · Cardiovascular and exercise physiology · Computer Science · Mathematics · Medicine · Muscle metabolism and nutrition · Sports Performance and Training · Internal Medicine
| Citations per year | 1 |
|---|---|
| Citation span | 2026 - 2026 (1) |
| Highly cited | No |