Intensity Matters: Effect of Different Work-Matched Efforts on Subsequent Performance in Cyclists.
| Autor: | Barranco-Gil, David, Alejo, Lidia B., Revuelta, Carlos, de Paz, Sabbas, Ibañez, María, Lucia, Alejandro, Valenzuela, Pedro L. |
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| Předmět: |
EXERCISE physiology
T-test (Statistics) DATA analysis STATISTICAL significance RESEARCH funding HIGH-intensity interval training STATISTICAL sampling RANDOMIZED controlled trials DESCRIPTIVE statistics CYCLING CROSSOVER trials PHYSICAL fitness STATISTICS ANALYSIS of variance ATHLETIC ability EXERCISE tests OXYGEN consumption DATA analysis software |
| Zdroj: | International Journal of Sports Physiology & Performance; Oct2024, Vol. 19 Issue 10, p1006-1011, 6p |
| Abstrakt: | Purpose: To assess the effect of 2 work-matched efforts of different intensities on subsequent performance in well-trained cyclists. Methods: The present study followed a randomized controlled crossover design. Twelve competitive junior cyclists volunteered to participate (age, 17 [1] y; maximum oxygen uptake, 71.0 [4.7] mL·kg−1·min−1). The power–duration relationship was assessed through 2-minute, 5-minute, and 12-minute field tests under fresh conditions (control). On subsequent days and following a randomized order, participants repeated the aforementioned tests after 2 training sessions matched for mechanical work (∼15 kJ/kg) of different intensities (ie, a moderate-intensity continuous-training [60%–70% of critical power; CP] session or a session including high-intensity intervals [3-min repetition bouts at 110%–120% of the CP interspersed by 3-min rest periods]). Results: A significantly lower power output was found in the 2-minute test after the high-intensity training session compared not only with the control condition (−8%, P <.001) but also with the moderate-intensity continuous-training session (−7%, P =.003), with no significant differences between the latter conditions. No significant differences between conditions were found for the remaining tests. As a consequence, the high-intensity training session resulted in significantly lower W′ values compared to both the control condition (−27%, P =.001) and the moderate-intensity continuous-training session (−26%, P =.012), with no differences between the 2 latter conditions and with no differences for CP. Conclusion: A session including high-intensity intermittent efforts induces a greater fatigue, particularly in short-duration efforts and W′, than a work-matched continuous-training session of moderate intensity. [ABSTRACT FROM AUTHOR] |
| Databáze: | Complementary Index |
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