Molecular and Neuromuscular Responses and Adaptations to High-Power, High-Intensity Resistance Exercise in Competitive Weightlifters and Resistance Trained Adults

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dc.contributor.advisor Smith, H en
dc.contributor.advisor Marshall, P en
dc.contributor.author Storey, Adam en
dc.date.accessioned 2013-07-17T23:25:57Z en
dc.date.issued 2013 en
dc.identifier.uri http://hdl.handle.net/2292/20621 en
dc.description.abstract The sport of weightlifting requires the body weight-categorized athletes to perform three attempts of the snatch and three attempts of the clean and jerk in competition. During the performance of these lifts, competitive weightlifters have achieved some of the highest absolute and relative peak power outputs reported in the literature. The training methods of these athletes exceed evidence-based recommendations for the improvement of strength and power in resistance-trained adults. Thus, the purpose of this thesis was to identify and compare acute molecular and neuromuscular responses during the early recovery from highpower, high-intensity resistance exercise (HIRE) in competitive weightlifters and resistancetrained adults. An integrative physiological approach was taken across three separate research projects, with measurements of mRNA and protein expression changes made at the systemic and skeletal muscle level. In addition, performance tests were conducted along with direct quantification of skeletal muscle structural and functional responses following repeated HIRE in competitive weightlifters and resistance-trained adults. Of specific interest were the influence of prescribed variations in training load (i.e. 2 wk of overload and 1 wk of recovery training; Study 1) and the effects of post-exercise feeding (Study 3) on the exercise-induced transcriptional responses in competitive weightlifters and resistance-trained adults, respectively. In addition, as competitive weightlifters routinely perform multiple HIRE sessions within the same day, the skeletal muscle structural and functional responses to “double-day training” were compared between competitive weightlifters and resistancetrained adults (Study 2). The results presented in this thesis demonstrate that competitive weightlifters have a unique ability to recover rapidly following acute periods of overload and between successive HIRE sessions performed within the same day. In addition, a meal following an acute bout of high-power, HIRE was shown to have an attenuating effect on the expression of chemokines (MCP-1, CCR2) associated with muscle repair and regeneration. However, further research is required to determine the functional relevance of this exercisenutrient interaction on athletic performance. Independently and collectively the findings presented in this thesis contribute to the understanding of the acute molecular and/or neuromuscular responses in well-trained adults following high-power, HIRE that lead to enhanced recovery and performance. en
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof PhD Thesis - University of Auckland en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Molecular and Neuromuscular Responses and Adaptations to High-Power, High-Intensity Resistance Exercise in Competitive Weightlifters and Resistance Trained Adults en
dc.type Thesis en
thesis.degree.grantor The University of Auckland en
thesis.degree.level Doctoral en
thesis.degree.name PhD en
dc.rights.holder Copyright: The Author en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.elements-id 404491 en
pubs.record-created-at-source-date 2013-07-18 en


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