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Acute reduction of lower-body contractile function following a microbiopsy of m. vastus lateralis

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dc.contributor.author Davies, Robert W.
dc.contributor.author Carson, Brian P.
dc.contributor.author Bass, Joseph J.
dc.contributor.author Holohan, Sorcha
dc.contributor.author Jakeman, Philip M.
dc.date.accessioned 2018-11-08T14:14:27Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/10344/7293
dc.description peer-reviewed en_US
dc.description.abstract Twenty‐three resistance trained men 18‐35 years (23 [3] years, 1.8 [0.1] m, 81 [10] kg body mass, 2.3 [1.1] years resistance training experience; mean [SD]) performed repeated maximal voluntary isometric squats (ISQ) and countermovement jumps (CMJ) pre‐ and +30 minutes post a unilateral microbiopsy of m. vastus lateralis. ISQ and CMJ were simultaneously measured by two force plates sampling ipsilateral (biopsied) and contralateral (non‐biopsied) limb force. Bilateral limb force (ipsilateral + contralateral) and imbalance (ipsilateral/bilateral) data are reported as % change from pre‐biopsy (mean [95% CI]). A post‐biopsy reduction in bilateral ISQ peak force (−17 [−23, −11] %; P < 0.001), ISQ rate of force development (RFD; −28 [−41, −15] %, P = 0.002) and CMJ peak take‐off force (−7 [−13, −1]%, P = 0.019) occurred. Imbalance was observed for ISQ peak force (3.2 [2.1, 4.3] %, P < 0.001), RFD (2.8 [1.6, 4.0] %, P < 0.001) and CMJ landing (3.3 [1.0, 5.6] %, P = 0.009), resultant of a force transfer from the ipsilateral (biopsied) to the contralateral (non‐biopsied) limb. These data suggest that in young, resistance trained men a modulatory influence on maximal voluntary static and dynamic lower‐body contractile function is evoked acutely (+30 minutes) following a microbiopsy of m. vastus lateralis. en_US
dc.language.iso eng en_US
dc.publisher Wiley and Sons Ltd en_US
dc.relation.ispartofseries Scandinavian Journal of Medicine and Science in Sports;28 (12), pp. 2638-2642
dc.relation.uri https://doi.org/10.1111/sms.13295
dc.rights This is the peer reviewed version of the following article: Scandinavian Journal of Medicine and Science in Sports 2018, 28 (12), pp. 2638-2642 Acute reduction of lower‐body contractile function following a microbiopsy of m. vastus lateralis Robert W. Davies,Brian P. Carson,Joseph J. Bass, Sorcha Holohan, Philip M. Jakeman which has been published in final form at https://doi.org/10.1111/sms.13295 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. http://olabout.wiley.com/WileyCDA/Section/id-828039.html#terms
dc.subject biopsy en_US
dc.subject human en_US
dc.subject muscle Contraction en_US
dc.subject muscle Strength en_US
dc.subject quadriceps Muscle en_US
dc.title Acute reduction of lower-body contractile function following a microbiopsy of m. vastus lateralis en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1111/sms.13295
dc.date.embargoEndDate 2019-09-11
dc.embargo.terms 2019-09-11 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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