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The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

Michael J. Johnston, Christian J. Cook, David Drake, Lisa Costley, Julie P. Johnston, Liam P. Kilduff

Journal of Strength and Conditioning Research, Volume: 30, Issue: 11, Pages: 3098 - 3106

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DOI (Published version): 10.1519/JSC.0000000000001423

Abstract

The aim of this study was to compare the acute neuromuscular, biochemical, and endocrine responses of a training day consisting of a speed session only with performing a speed-and-weights training session on the same day. Fifteen men who were academy-level rugby players completed 2 protocols in a ra...

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Published in: Journal of Strength and Conditioning Research
ISSN: 1064-8011
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa30980
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spelling 2016-11-07T14:59:47Z v2 30980 2016-11-07 The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes Liam Kilduff Liam Kilduff true 0000-0001-9449-2293 false 972ed9a1dda7a0de20581a0f8350be98 74fe35ffaf3f49dd71ae83b941cc9c75 wFF51nm7cK8JlO9bBAhnaQgr5y2nBRz3haj4DmVVDsQ= 2016-11-07 STSC The aim of this study was to compare the acute neuromuscular, biochemical, and endocrine responses of a training day consisting of a speed session only with performing a speed-and-weights training session on the same day. Fifteen men who were academy-level rugby players completed 2 protocols in a randomized order. The speed-only protocol involved performing 6 maximal effort repetitions of 50-m running sprints with 5 minutes of recovery between each sprint, whereas the speed-and-weights protocol involved the same sprinting session but was followed 2 hours later by a lower-body weights session consisting of 4 sets of 5 backsquats and Romanian deadlift at 85% one repetition maximum. Testosterone, cortisol, creatine kinase, lactate, and perceived muscle soreness were determined immediately before, immediately after, 2 hours after, and 24 hours after both the protocols. Peak power, relative peak power, jump height, and average rate of force development were determined from a countermovement jump (CMJ) at the same time points. After 24-hours, muscle soreness was significantly higher after the speed-and-weights protocol compared with the speed-only protocol (effect size η2 = 0.253, F = 4.750, p ≤ 0.05). There was no significant difference between any of the CMJ variables at any of the posttraining time points. Likewise, creatine kinase, testosterone, and cortisol were unaffected by the addition of a weight-training session. These data indicate that the addition of a weight-training session 2 hours after a speed session, whereas increasing the perception of fatigue the next day does not result in a difference in endocrine response or in neuromuscular capability. Journal article Journal of Strength and Conditioning Research 30 11 3098 3106 1064-8011 0 11 2016 2016-11-01 10.1519/JSC.0000000000001423 College of Engineering Sports Science CENG STSC None None 2016-11-07T14:59:47Z 2016-11-07T14:58:31Z College of Engineering Engineering Michael J. Johnston 1 Christian J. Cook 2 David Drake 3 Lisa Costley 4 Julie P. Johnston 5 Liam P. Kilduff 6 0030980-07112016145929.pdf johnston2016.pdf 2016-11-07T14:59:29Z Output 304250 application/pdf AM true Published to Cronfa 07/11/2016 2016-02-24T13:11:50.29 false
title The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
spellingShingle The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
Kilduff, Liam
title_short The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
title_full The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
title_fullStr The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
title_full_unstemmed The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
title_sort The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes
author_id_str_mv 972ed9a1dda7a0de20581a0f8350be98
author_id_fullname_str_mv 972ed9a1dda7a0de20581a0f8350be98_***_Kilduff, Liam
author Kilduff, Liam
author2 Michael J. Johnston
Christian J. Cook
David Drake
Lisa Costley
Julie P. Johnston
Liam P. Kilduff
format Journal article
container_title Journal of Strength and Conditioning Research
container_volume 30
container_issue 11
container_start_page 3098
publishDate 2016
institution Swansea University
issn 1064-8011
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college_str College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
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description The aim of this study was to compare the acute neuromuscular, biochemical, and endocrine responses of a training day consisting of a speed session only with performing a speed-and-weights training session on the same day. Fifteen men who were academy-level rugby players completed 2 protocols in a randomized order. The speed-only protocol involved performing 6 maximal effort repetitions of 50-m running sprints with 5 minutes of recovery between each sprint, whereas the speed-and-weights protocol involved the same sprinting session but was followed 2 hours later by a lower-body weights session consisting of 4 sets of 5 backsquats and Romanian deadlift at 85% one repetition maximum. Testosterone, cortisol, creatine kinase, lactate, and perceived muscle soreness were determined immediately before, immediately after, 2 hours after, and 24 hours after both the protocols. Peak power, relative peak power, jump height, and average rate of force development were determined from a countermovement jump (CMJ) at the same time points. After 24-hours, muscle soreness was significantly higher after the speed-and-weights protocol compared with the speed-only protocol (effect size η2 = 0.253, F = 4.750, p ≤ 0.05). There was no significant difference between any of the CMJ variables at any of the posttraining time points. Likewise, creatine kinase, testosterone, and cortisol were unaffected by the addition of a weight-training session. These data indicate that the addition of a weight-training session 2 hours after a speed session, whereas increasing the perception of fatigue the next day does not result in a difference in endocrine response or in neuromuscular capability.
published_date 2016-11-01T04:46:16Z
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