Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists

OBJECTIVES: Competitive endurance athletes commonly undertake periods of overload training in the weeks prior to major competitions. This investigation examined the effects of two seven-day high-intensity overload training regimes (HIT) on performance and physiological characteristics of competitive...

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Autores principales: Clark, Bradley, Costa, Vitor P., O'Brien, Brendan J., Guglielmo, Luiz G., Paton, Carl D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270748/
https://www.ncbi.nlm.nih.gov/pubmed/25521824
http://dx.doi.org/10.1371/journal.pone.0115308
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author Clark, Bradley
Costa, Vitor P.
O'Brien, Brendan J.
Guglielmo, Luiz G.
Paton, Carl D.
author_facet Clark, Bradley
Costa, Vitor P.
O'Brien, Brendan J.
Guglielmo, Luiz G.
Paton, Carl D.
author_sort Clark, Bradley
collection PubMed
description OBJECTIVES: Competitive endurance athletes commonly undertake periods of overload training in the weeks prior to major competitions. This investigation examined the effects of two seven-day high-intensity overload training regimes (HIT) on performance and physiological characteristics of competitive cyclists. DESIGN: The study was a matched groups, controlled trial. METHODS: Twenty-eight male cyclists (mean ± SD, Age: 33±10 years, Mass 74±7 kg, VO(2) peak 4.7±0.5 L·min(−1)) were assigned to a control group or one of two training groups for seven consecutive days of HIT. Before and after training cyclists completed an ergometer based incremental exercise test and a 20-km time-trial. The HIT sessions were ∼120 minutes in duration and consisted of matched volumes of 5, 10 and 20 second (short) or 15, 30 and 45 second (long) maximal intensity efforts. RESULTS: Both the short and long HIT regimes led to significant (p<0.05) gains in time trial performance compared to the control group. Relative to the control group, the mean changes (±90% confidence limits) in time-trial power were 8.2%±3.8% and 10.4%±4.3% for the short and long HIT regimes respectively; corresponding increases in peak power in the incremental test were 5.5%±2.7% and 9.5%±2.5%. Both HIT (short vs long) interventions led to non-significant (p>0.05) increases (mean ± SD) in VO(2) peak (2.3%±4.7% vs 3.5%±6.2%), lactate threshold power (3.6%±3.5% vs 2.9%±5.3%) and gross efficiency (3.2%±2.4% vs 5.1%±3.9%) with only small differences between HIT regimes. CONCLUSIONS: Seven days of overload HIT induces substantial enhancements in time-trial performance despite non-significant increases in physiological measures with competitive cyclists.
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spelling pubmed-42707482014-12-26 Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists Clark, Bradley Costa, Vitor P. O'Brien, Brendan J. Guglielmo, Luiz G. Paton, Carl D. PLoS One Research Article OBJECTIVES: Competitive endurance athletes commonly undertake periods of overload training in the weeks prior to major competitions. This investigation examined the effects of two seven-day high-intensity overload training regimes (HIT) on performance and physiological characteristics of competitive cyclists. DESIGN: The study was a matched groups, controlled trial. METHODS: Twenty-eight male cyclists (mean ± SD, Age: 33±10 years, Mass 74±7 kg, VO(2) peak 4.7±0.5 L·min(−1)) were assigned to a control group or one of two training groups for seven consecutive days of HIT. Before and after training cyclists completed an ergometer based incremental exercise test and a 20-km time-trial. The HIT sessions were ∼120 minutes in duration and consisted of matched volumes of 5, 10 and 20 second (short) or 15, 30 and 45 second (long) maximal intensity efforts. RESULTS: Both the short and long HIT regimes led to significant (p<0.05) gains in time trial performance compared to the control group. Relative to the control group, the mean changes (±90% confidence limits) in time-trial power were 8.2%±3.8% and 10.4%±4.3% for the short and long HIT regimes respectively; corresponding increases in peak power in the incremental test were 5.5%±2.7% and 9.5%±2.5%. Both HIT (short vs long) interventions led to non-significant (p>0.05) increases (mean ± SD) in VO(2) peak (2.3%±4.7% vs 3.5%±6.2%), lactate threshold power (3.6%±3.5% vs 2.9%±5.3%) and gross efficiency (3.2%±2.4% vs 5.1%±3.9%) with only small differences between HIT regimes. CONCLUSIONS: Seven days of overload HIT induces substantial enhancements in time-trial performance despite non-significant increases in physiological measures with competitive cyclists. Public Library of Science 2014-12-18 /pmc/articles/PMC4270748/ /pubmed/25521824 http://dx.doi.org/10.1371/journal.pone.0115308 Text en © 2014 Clark et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Clark, Bradley
Costa, Vitor P.
O'Brien, Brendan J.
Guglielmo, Luiz G.
Paton, Carl D.
Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title_full Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title_fullStr Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title_full_unstemmed Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title_short Effects of a Seven Day Overload-Period of High-Intensity Training on Performance and Physiology of Competitive Cyclists
title_sort effects of a seven day overload-period of high-intensity training on performance and physiology of competitive cyclists
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270748/
https://www.ncbi.nlm.nih.gov/pubmed/25521824
http://dx.doi.org/10.1371/journal.pone.0115308
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