Journal article
Effect of environmental temperature on high-intensity intervals in well-trained cyclists
International Journal of Sports Physiology and Performance, Vol.14(10), pp.1401-1407
2019
Abstract
Purpose: To examine the effect of environmental temperature (TA) on performance and physiological responses (eg, body temperature, cardiopulmonary measures) during a high-intensity aerobic interval session. It was hypothesized that power output would be highest in the 13°C condition and lower in the 5°C, 22°C, and 35°C conditions. Methods: Eleven well-trained cyclists randomly completed 4 interval sessions at 5°C, 13°C, 22°C, and 35°C (55% [13%] relative humidity), each involving five 4-min intervals interspersed with 5 min of recovery. During the intervals, power output, core temperature (TC), skin temperature, VO2, and heart rate were recorded. Results: Mean session power output for 13°C (366 [32] W) was not higher than 5°C (363 [32] W; P = 1.00, effect size = 0.085), 22°C (364 [36] W; P = 1.00, effect size = 0.061), or 35°C (352 [31] W; P = .129, effect size = 0.441). The 5th interval of the 35°C condition had a lower power output compared with all other TA. TC was higher in 22°C compared with both 5°C and 13°C (P = .001). VO2 was not significantly different across TA (P = .187). Heart rate was higher in the 4th and 5th intervals of 35°C compared with 5°C and 13°C. Conclusions: This study demonstrates that while mean power outputs for intervals are similar across TA, hot TA (≥35°C) reduces interval power output later in a training session. Well-trained cyclists performing maximal high-intensity aerobic intervals can achieve near-optimal power output over a broader range of TA than previous literature would indicate.
Details
- Title
- Effect of environmental temperature on high-intensity intervals in well-trained cyclists
- Authors/Creators
- J.R. Boynton (Author/Creator)F. Danner (Author/Creator)P. Menaspà (Author/Creator)J.J. Peiffer (Author/Creator)C.R. Abbiss (Author/Creator)
- Publication Details
- International Journal of Sports Physiology and Performance, Vol.14(10), pp.1401-1407
- Publisher
- Human Kinetics
- Identifiers
- 991005543253707891
- Copyright
- © 2019 Human Kinetics
- Murdoch Affiliation
- Research and Innovation Office
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
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- Citation topics
- 1 Clinical & Life Sciences
- 1.172 Sports Science
- 1.172.823 Thermoregulation
- Web Of Science research areas
- Physiology
- Sport Sciences
- ESI research areas
- Clinical Medicine