A microcycle of high-intensity short-interval sessions induces improvements in indicators of endurance performance compared to regular training.

Autor: Solli GS; Department of Sport Science and Physical Education, Nord University, Bodø, Norway., Odden I; Inland Norway University of Applied Sciences, Section for Health and Exercise Physiology Lillehammer, Lillehammer, Norway., Sælen V; Inland Norway University of Applied Sciences, Section for Health and Exercise Physiology Lillehammer, Lillehammer, Norway., Hansen J; Inland Norway University of Applied Sciences, Section for Health and Exercise Physiology Lillehammer, Lillehammer, Norway., Mølmen KS; Inland Norway University of Applied Sciences, Section for Health and Exercise Physiology Lillehammer, Lillehammer, Norway., Rønnestad BR; Inland Norway University of Applied Sciences, Section for Health and Exercise Physiology Lillehammer, Lillehammer, Norway.
Jazyk: angličtina
Zdroj: European journal of sport science [Eur J Sport Sci] 2024 Dec 05. Date of Electronic Publication: 2024 Dec 05.
DOI: 10.1002/ejsc.12223
Abstrakt: The purpose of this study was to evaluate the effects of a microcycle of high-intensity interval training (HIT) sessions with multiple short work intervals followed by an active recovery period, compared to a similar duration of regular training, on determinants and indicators of endurance performance in well-trained cyclists. The participants in the BLOCK group performed a 6-day HIT microcycle including five HIT sessions (5 × 8.75-min 30/15 s short intervals) followed by a 6-day active recovery period with reduced training load, while the regular training group (REG) performed 12 days of their regular training, including four HIT sessions. Physiological testing was performed before and after the training periods. From pre- to post- intervention, BLOCK demonstrated significantly larger improvements than REG in mean power output (PO) during the last min of the maximal oxygen uptake (VO 2max ) test (PO VO2max ) (3.7 vs. 0.7%, p = 0.009, and effect size (ES) = 1.00) and mean PO during the 10-s sprint (2.8 vs. 1.9%, p = 0.028, and ES = 0.63). No significant differences between BLOCK and REG were observed for VO 2max , PO at 4 mmol·L -1 [blood lactate] (PO 4mmol ), 15-min maximal mean power output (PO 15-min ), and gross efficiency (p = 0.156-0.919). However, there was a tendency for larger improvements in the performance index (calculated from the main performance indicators PO VO2max , PO 4mmol , and PO 15-min ) in BLOCK compared to REG (2.9% vs. 1.2%, p = 0.079, and ES = 0.71). A 6-day high-intensity short-interval microcycle followed by a 6-day active recovery period induces improvements in endurance performance indicators compared to regular training, demonstrating its potential as an efficient strategy for endurance training in well-trained cyclists.
(© 2024 The Author(s). European Journal of Sport Science published by Wiley‐VCH GmbH on behalf of European College of Sport Science.)
Databáze: MEDLINE
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