Physiological factors determining downhill vs uphill running endurance performance
| Autor: | Stéphane P. Dufour, Fabrice Favret, Evelyne Lonsdorfer, Mourad Boukhari, Romain Remetter, Bernard Geny, Thomas J. Hureau, Blah Y. L. Kouassi, Marcel Lemire |
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| Přispěvatelé: | Mitochondrie, stress oxydant et protection musculaire (MSP), Université de Strasbourg (UNISTRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors [SDV]Life Sciences [q-bio] Physical Therapy Sports Therapy and Rehabilitation Athletic Performance Running 03 medical and health sciences Vertical jump Oxygen Consumption 0302 clinical medicine Time trial Respiratory Rate Heart rate Tidal Volume medicine Humans Orthopedics and Sports Medicine Lactic Acid 030212 general & internal medicine Leg business.industry VO2 max Cardiorespiratory fitness 030229 sport sciences Carbon Dioxide Muscle endurance Elasticity vVO2max Sprint Physical Endurance Physical therapy business |
| Zdroj: | Journal of Science and Medicine in Sport Journal of Science and Medicine in Sport, Elsevier, 2021, 24, pp.85-91. ⟨10.1016/j.jsams.2020.06.004⟩ |
| ISSN: | 1440-2440 |
| Popis: | Objectives Recent studies investigated the determinants of trail running performance (i.e., combining uphill (UR) and downhill running sections (DR)), while the possible specific physiological factors specifically determining UR vs DR performances (i.e., isolating UR and DR) remain presently unknown. This study aims to determine the cardiorespiratory responses to outdoor DR vs UR time-trial and explore the determinants of DR and UR performance in highly trained runners. Design Randomized controlled trial. Methods Ten male highly-trained endurance athletes completed 5-km DR and UR time-trials (average grade: ±8%) and were tested for maximal oxygen uptake, lower limb extensor maximal strength, local muscle endurance, leg musculotendinous stiffness, vertical jump ability, explosivity/agility and sprint velocity. Predictors of DR and UR performance were investigated using correlation and commonality regression analyses. Results Running velocity was higher in DR vs UR time-trial (20.4 ± 1.0 vs 12.0 ± 0.5 km·h−1, p 0.05) despite lower average VO2 (85 ± 8% vs 89 ± 7% VO2max; p Conclusions Five-km UR and DR running performances are both well explained by three independent predictors. If two predictors are shared between UR and DR performances (vVO2max and maximal strength), their relative contribution is different and, importantly, the third predictor appears very specific to the exercise modality (BMI for UR vs leg musculotendinous stiffness for DR). |
| Databáze: | OpenAIRE |
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