- Title
- Ventilatory efficiency in juvenile elite cyclists
- Creator
- Brown, Stephen; Stannard, Stephen; Raman, Aaron; Schlader, Zachary
- Date
- 2013
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/72534
- Identifier
- vital:6919
- Identifier
-
https://doi.org/10.1016/j.jsams.2012.06.010
- Identifier
- ISSN:1440-2440
- Abstract
- OBJECTIVES: Ventilation ( [Formula: see text] ) as a function of CO2 output, and oxygen uptake ( [Formula: see text] ) as a function of [Formula: see text] , define cardio-respiratory efficiency, although few data compare efficiency with maximum oxygen uptake ( [Formula: see text] ), or consider reproducibility. Currently there are no data for trained juveniles. DESIGN: Twenty-five trained juvenile cyclists (mean age 14.7 years), performed maximal exercise testing on two occasions, separated by 16 weeks. METHODS: [Formula: see text] vs. [Formula: see text] slope, oxygen uptake efficiency slope, and [Formula: see text] were measured during cycle ergometer exercise to volitional exhaustion on two occasions, 16 weeks apart. RESULTS: Mean (SD) [Formula: see text] vs. [Formula: see text] slope, oxygen uptake efficiency slope, and [Formula: see text] were 28.14 (3.89), 4.16 (0.73), and 75.4 (8.9) mlkg(-1)min(-1) on visit 1, and 27.92 (4.63), 4.22 (0.76), and 73.6 (9.3) mlkg(-1)min(-1) on visit 2. Good reproducibility (differences ≤2.4%), but poor correlations (r≤0.29) between efficiency and [Formula: see text] were recorded. CONCLUSIONS: Reproducibility of efficiency measures was comparable to [Formula: see text] , however, poor associations between efficiency and [Formula: see text] suggested independence. Efficient ventilation may be of limited importance in determining the [Formula: see text] in a trained juvenile cyclist.
- Relation
- Journal of Science and Medicine in Sport Vol. 16, no. 3 (2013), p. 266-270
- Rights
- Copyright Elsevier
- Rights
- This metadata is freely available under a CCO license
- Subject
- Juveniles; Test–re-test reliability; Maximal oxygen uptake; OUES; 1106 Human Movement and Sports Science; 1117 Public Health and Health Services
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