Neuromuscular adaptations to single-session combined strength and endurance training in untrained men an examination of the order effect

Understanding the adaptations to single-session combined strength (S) and endurance (E) training has received increased attention in scientific literature through the expand-ing use of combined training programs for practical purposes. However, the intra-session exercise order when performing both E...

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Päätekijä: Pulverenti, Timothy
Muut tekijät: Liikuntatieteellinen tiedekunta, Faculty of Sport and Health Sciences, Liikuntabiologian laitos, Department of Biology of Physical Activity, University of Jyväskylä, Jyväskylän yliopisto
Aineistotyyppi: Pro gradu
Kieli:eng
Julkaistu: 2013
Aiheet:
Linkit: https://jyx.jyu.fi/handle/123456789/41852
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author Pulverenti, Timothy
author2 Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikuntabiologian laitos Department of Biology of Physical Activity University of Jyväskylä Jyväskylän yliopisto
author_facet Pulverenti, Timothy Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikuntabiologian laitos Department of Biology of Physical Activity University of Jyväskylä Jyväskylän yliopisto Pulverenti, Timothy Liikuntatieteellinen tiedekunta Faculty of Sport and Health Sciences Liikuntabiologian laitos Department of Biology of Physical Activity University of Jyväskylä Jyväskylän yliopisto
author_sort Pulverenti, Timothy
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description Understanding the adaptations to single-session combined strength (S) and endurance (E) training has received increased attention in scientific literature through the expand-ing use of combined training programs for practical purposes. However, the intra-session exercise order when performing both E and S in the same training session may limit potential strength development, as the neuromuscular adaptations to either training mode alone are very different. Research on the effect of the intra-session exercise order of combined training on various training-induced adaptations, i.e. the order effect, is currently limited, especially with regard to the neuromuscular adaptations. Therefore, the purpose of this study was to investigate the order effect to single-session combined strength and endurance training on the long-term neuromuscular adaptations. Thirty-two young adult male subjects (29 ± 4 years) completed a 24-week progressive single-session combined strength and endurance-training program. The subjects were split into two groups performing opposite intra-session exercise orders, endurance be-fore strength (E+S; n = 14) or strength before endurance (S+E; n= 18) by pairwise matching of basal maximum strength results. All subjects were tested on three separate occasions (0, 12 and 24 weeks). A group of subjects (n = 8) participated in a two-week control period performed before week 0 (-2 to 0 weeks) to ensure reproducibility and stability of important dependent variables. Maximal voluntary activation (VA), surface electromyography (sEMG), one-repetition maximum concentric strength (1-RM), maximal voluntary isometric force (MVC) and rapid force production (AV500) of the leg extensors and flexors were evaluated. No changes occurred in strength during the two-week control period, while after the 24-week training period significant increases in 1-RM load of 13% (p<0.001) and 17% (p<0.001), knee extension MVC of 7% (p<0.05) and 14% (p<0.01) and leg press MVC of 15% (p<0.01) and 13% (p<0.01) were observed for E+S and S+E, respectively. There were no significant between group differences in strength gains. After 24 weeks a significant increase took place in VA of quadriceps femoris of 4% (p<0.01) in S+E only whereas no significant changes occurred in E+S. There were differences between groups in changes in maximum sEMG activity of the vastus lateralis after 24 weeks as large increases took place in S+E whereas non-significant changes occurred in E+S. The present data provide some evidence of an order effect on training induced adapta-tions to combined strength and endurance training. Maximum voluntary activation of trained leg muscles appeared to be interfered after training E+S when compared to S+E. Additionally, strength development appeared to be affected by training order as larger strength gains were continually observed for S+E when compared to E+S, however, strength gains were not statistically significant. These findings highlight the importance of combined training order as the level or neural activation governs muscular strength.
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However, the intra-session exercise order when performing both E and S in the same training session may limit potential strength development, as the neuromuscular adaptations to either training mode alone are very different. Research on the effect of the intra-session exercise order of combined training on various training-induced adaptations, i.e. the order effect, is currently limited, especially with regard to the neuromuscular adaptations. Therefore, the purpose of this study was to investigate the order effect to single-session combined strength and endurance training on the long-term neuromuscular adaptations. \r\n\r\nThirty-two young adult male subjects (29 \u00b1 4 years) completed a 24-week progressive single-session combined strength and endurance-training program. The subjects were split into two groups performing opposite intra-session exercise orders, endurance be-fore strength (E+S; n = 14) or strength before endurance (S+E; n= 18) by pairwise matching of basal maximum strength results. All subjects were tested on three separate occasions (0, 12 and 24 weeks). A group of subjects (n = 8) participated in a two-week control period performed before week 0 (-2 to 0 weeks) to ensure reproducibility and stability of important dependent variables. 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spellingShingle Pulverenti, Timothy Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect order effect combined training interference effect neural activation strength super-imposed twitch technique Valmennus- ja testausoppi Science in Sport Coaching and Fitness Testing 5013 voimaharjoittelu kestävyysharjoittelu hermo-lihastoiminta
title Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect
title_full Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect
title_fullStr Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect
title_full_unstemmed Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect
title_short Neuromuscular adaptations to single-session combined strength and endurance training in untrained men
title_sort neuromuscular adaptations to single session combined strength and endurance training in untrained men an examination of the order effect
title_sub an examination of the order effect
title_txtP Neuromuscular adaptations to single-session combined strength and endurance training in untrained men : an examination of the order effect
topic order effect combined training interference effect neural activation strength super-imposed twitch technique Valmennus- ja testausoppi Science in Sport Coaching and Fitness Testing 5013 voimaharjoittelu kestävyysharjoittelu hermo-lihastoiminta
topic_facet 5013 Science in Sport Coaching and Fitness Testing Valmennus- ja testausoppi combined training hermo-lihastoiminta interference effect kestävyysharjoittelu neural activation order effect strength super-imposed twitch technique voimaharjoittelu
url https://jyx.jyu.fi/handle/123456789/41852 http://www.urn.fi/URN:NBN:fi:jyu-201306272049
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