Journal article 1559 views
Morning based strength training improves afternoon physical performance in rugby union players
Christian J. Cook,
Liam Kilduff 
,
Blair T. Crewther,
Martyn Beaven,
Daniel J. West
,
Blair T. Crewther,
Martyn Beaven,
Daniel J. West
Journal of Science and Medicine in Sport, Volume: 17, Issue: 3, Pages: 317 - 321
Swansea University Author:
Liam Kilduff
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1016/j.jsams.2013.04.016
Abstract
ObjectivesTo determine if a morning training session could alter afternoon physical performance. Moreover, as testosterone (T) and cortisol (C) concentrations are significant predictors of physical performance, and both show circadian declines across the day, we examined the effects of morning train...
| Published in: | Journal of Science and Medicine in Sport |
|---|---|
| ISSN: | 1440-2440 |
| Published: |
2014
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa24273 |
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<?xml version="1.0"?><rfc1807><datestamp>2019-03-18T12:15:27.5202397</datestamp><bib-version>v2</bib-version><id>24273</id><entry>2015-11-11</entry><title>Morning based strength training improves afternoon physical performance in rugby union players</title><swanseaauthors><author><sid>972ed9a1dda7a0de20581a0f8350be98</sid><ORCID>0000-0001-9449-2293</ORCID><firstname>Liam</firstname><surname>Kilduff</surname><name>Liam Kilduff</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2015-11-11</date><deptcode>STSC</deptcode><abstract>ObjectivesTo determine if a morning training session could alter afternoon physical performance. Moreover, as testosterone (T) and cortisol (C) concentrations are significant predictors of physical performance, and both show circadian declines across the day, we examined the effects of morning training on diurnal T and C responses.DesignEighteen semi-professional rugby union players completed this randomised and counter-balanced study.MethodsFollowing morning saliva collection (0900 h), players completed a control (rested), Sprint (5 × 40 m) or Weights (3 repetition-maximum [RM] bench press and squat) trial. In the afternoon (15:00 h) of each trial, a further saliva sample was collected before players completed a performance test (3RM back squat and bench press, 40 m sprint, countermovement jump [CMJ]).ResultsSalivary T concentrations declined from am to pm under Control and Sprint, but not under Weights. Delta T, from am to pm, was greater under Control (−10.9 ± 2.4 pg ml−1) compared to Sprints (−6.2 ± 7.1 pg ml−1) and Weights (−1.2 ± 5.5 pg ml−1) (p ≤ 0.001). Delta C, from am to pm, was greater under Control compared to both Sprint and Weights (p &#60; 0.05). Players elicited better CMJ peak power, 40-m time, 3RM bench and squat performance under Weights compared with Control and Sprint (p &#60; 0.05). Faster 40-m times were seen under Sprint, when compared to Control (p &#60; 0.05).ConclusionsPerforming morning strength training is associated with improved physical performance in the afternoon. Additionally, the circadian decline in T concentrations appeared offset by morning training. However, it is unclear if T concentrations are, in part, causal of these improved responses or simply a reflective marker.</abstract><type>Journal Article</type><journal>Journal of Science and Medicine in Sport</journal><volume>17</volume><journalNumber>3</journalNumber><paginationStart>317</paginationStart><paginationEnd>321</paginationEnd><publisher/><issnPrint>1440-2440</issnPrint><keywords>Potentiation, Strength, Power, Steroid hormone, Testosterone</keywords><publishedDay>31</publishedDay><publishedMonth>5</publishedMonth><publishedYear>2014</publishedYear><publishedDate>2014-05-31</publishedDate><doi>10.1016/j.jsams.2013.04.016</doi><url/><notes/><college>COLLEGE NANME</college><department>Sport and Exercise Sciences</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>STSC</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2019-03-18T12:15:27.5202397</lastEdited><Created>2015-11-11T11:18:02.0360885</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences</level></path><authors><author><firstname>Christian J.</firstname><surname>Cook</surname><order>1</order></author><author><firstname>Liam</firstname><surname>Kilduff</surname><orcid>0000-0001-9449-2293</orcid><order>2</order></author><author><firstname>Blair T.</firstname><surname>Crewther</surname><order>3</order></author><author><firstname>Martyn</firstname><surname>Beaven</surname><order>4</order></author><author><firstname>Daniel J.</firstname><surname>West</surname><order>5</order></author></authors><documents/><OutputDurs/></rfc1807> |
| spelling |
2019-03-18T12:15:27.5202397 v2 24273 2015-11-11 Morning based strength training improves afternoon physical performance in rugby union players 972ed9a1dda7a0de20581a0f8350be98 0000-0001-9449-2293 Liam Kilduff Liam Kilduff true false 2015-11-11 STSC ObjectivesTo determine if a morning training session could alter afternoon physical performance. Moreover, as testosterone (T) and cortisol (C) concentrations are significant predictors of physical performance, and both show circadian declines across the day, we examined the effects of morning training on diurnal T and C responses.DesignEighteen semi-professional rugby union players completed this randomised and counter-balanced study.MethodsFollowing morning saliva collection (0900 h), players completed a control (rested), Sprint (5 × 40 m) or Weights (3 repetition-maximum [RM] bench press and squat) trial. In the afternoon (15:00 h) of each trial, a further saliva sample was collected before players completed a performance test (3RM back squat and bench press, 40 m sprint, countermovement jump [CMJ]).ResultsSalivary T concentrations declined from am to pm under Control and Sprint, but not under Weights. Delta T, from am to pm, was greater under Control (−10.9 ± 2.4 pg ml−1) compared to Sprints (−6.2 ± 7.1 pg ml−1) and Weights (−1.2 ± 5.5 pg ml−1) (p ≤ 0.001). Delta C, from am to pm, was greater under Control compared to both Sprint and Weights (p < 0.05). Players elicited better CMJ peak power, 40-m time, 3RM bench and squat performance under Weights compared with Control and Sprint (p < 0.05). Faster 40-m times were seen under Sprint, when compared to Control (p < 0.05).ConclusionsPerforming morning strength training is associated with improved physical performance in the afternoon. Additionally, the circadian decline in T concentrations appeared offset by morning training. However, it is unclear if T concentrations are, in part, causal of these improved responses or simply a reflective marker. Journal Article Journal of Science and Medicine in Sport 17 3 317 321 1440-2440 Potentiation, Strength, Power, Steroid hormone, Testosterone 31 5 2014 2014-05-31 10.1016/j.jsams.2013.04.016 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2019-03-18T12:15:27.5202397 2015-11-11T11:18:02.0360885 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Christian J. Cook 1 Liam Kilduff 0000-0001-9449-2293 2 Blair T. Crewther 3 Martyn Beaven 4 Daniel J. West 5 |
| title |
Morning based strength training improves afternoon physical performance in rugby union players |
| spellingShingle |
Morning based strength training improves afternoon physical performance in rugby union players Liam Kilduff |
| title_short |
Morning based strength training improves afternoon physical performance in rugby union players |
| title_full |
Morning based strength training improves afternoon physical performance in rugby union players |
| title_fullStr |
Morning based strength training improves afternoon physical performance in rugby union players |
| title_full_unstemmed |
Morning based strength training improves afternoon physical performance in rugby union players |
| title_sort |
Morning based strength training improves afternoon physical performance in rugby union players |
| author_id_str_mv |
972ed9a1dda7a0de20581a0f8350be98 |
| author_id_fullname_str_mv |
972ed9a1dda7a0de20581a0f8350be98_***_Liam Kilduff |
| author |
Liam Kilduff |
| author2 |
Christian J. Cook Liam Kilduff Blair T. Crewther Martyn Beaven Daniel J. West |
| format |
Journal article |
| container_title |
Journal of Science and Medicine in Sport |
| container_volume |
17 |
| container_issue |
3 |
| container_start_page |
317 |
| publishDate |
2014 |
| institution |
Swansea University |
| issn |
1440-2440 |
| doi_str_mv |
10.1016/j.jsams.2013.04.016 |
| college_str |
Faculty of Science and Engineering |
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|
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facultyofscienceandengineering |
| hierarchy_top_title |
Faculty of Science and Engineering |
| hierarchy_parent_id |
facultyofscienceandengineering |
| hierarchy_parent_title |
Faculty of Science and Engineering |
| department_str |
School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences |
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0 |
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| description |
ObjectivesTo determine if a morning training session could alter afternoon physical performance. Moreover, as testosterone (T) and cortisol (C) concentrations are significant predictors of physical performance, and both show circadian declines across the day, we examined the effects of morning training on diurnal T and C responses.DesignEighteen semi-professional rugby union players completed this randomised and counter-balanced study.MethodsFollowing morning saliva collection (0900 h), players completed a control (rested), Sprint (5 × 40 m) or Weights (3 repetition-maximum [RM] bench press and squat) trial. In the afternoon (15:00 h) of each trial, a further saliva sample was collected before players completed a performance test (3RM back squat and bench press, 40 m sprint, countermovement jump [CMJ]).ResultsSalivary T concentrations declined from am to pm under Control and Sprint, but not under Weights. Delta T, from am to pm, was greater under Control (−10.9 ± 2.4 pg ml−1) compared to Sprints (−6.2 ± 7.1 pg ml−1) and Weights (−1.2 ± 5.5 pg ml−1) (p ≤ 0.001). Delta C, from am to pm, was greater under Control compared to both Sprint and Weights (p < 0.05). Players elicited better CMJ peak power, 40-m time, 3RM bench and squat performance under Weights compared with Control and Sprint (p < 0.05). Faster 40-m times were seen under Sprint, when compared to Control (p < 0.05).ConclusionsPerforming morning strength training is associated with improved physical performance in the afternoon. Additionally, the circadian decline in T concentrations appeared offset by morning training. However, it is unclear if T concentrations are, in part, causal of these improved responses or simply a reflective marker. |
| published_date |
2014-05-31T03:28:45Z |
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1763751100980133888 |
| score |
11.036706 |