Does creatine supplementation affect recovery speed of impulse above critical torque?

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dc.contributor.authorAbdalla, Leonardo Henrique Perinotto [UNESP]
dc.contributor.authorBroxterman, Ryan Michael
dc.contributor.authorBarstow, Thomas Jackson
dc.contributor.authorGreco, Camila Coelho [UNESP]
dc.contributor.authorDenadai, Benedito Sérgio [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversity of Utah
dc.contributor.institutionVA Medical Center
dc.contributor.institutionKansas State University
dc.date.accessioned2023-07-29T16:02:07Z
dc.date.available2023-07-29T16:02:07Z
dc.date.issued2022-01-01
dc.description.abstractWe previously reported that creatine supplementation improved intermittent isometric exercise performance by augmenting the total impulse performed above end-test torque (total IET′). However, our previous analyses did not enable mechanistic assessments. The objective of this study was to determine if creatine supplementation affected the IET′ speed of recovery. To achieve this objective, we retrospectively analyzed our data using the IET′ balance model to determine the time constant for the recovery of IET′ (τIET′). Sixteen men were randomly allocated into creatine (N = 8) or placebo (N = 8) groups. Prior to supplementation, participants performed quadriceps all-out exercise to determine end-test torque (ET) and IETʹ. Participants then performed quadriceps exercise at ET + 10% until task-failure before supplementation (Baseline), until task-failure after supplementation (Creatine or Placebo), and until the Baseline time after supplementation (Creatine- or Placebo-Isotime). τIET′ was faster than Baseline for Creatine (669 ± 98 vs 470 ± 66 s), but not Placebo (792 ± 166 vs 786 ± 161 s). The creatine-induced change in τIET′ was inversely correlated with the creatine-induced changes in both the rate of peripheral fatigue development and time to task-failure. τIET′ was inversely correlated with total IET′ and ET in all conditions, but creatine supplementation shifted this relationship such that τIET′ was faster for a given ET. Creatine supplementation, therefore, sped the recovery of IET′ during intermittent isometric exercise, which was inversely related to the improvement in exercise performance. These findings support that the improvement in exercise performance after creatine supplementation was, at least in part, specific to effects on the physiological mechanisms that determine the IET′ speed of recovery. HIGHLIGHTS Sixteen healthy participants were randomly allocated to creatine supplementation or placebo groups. Creatine supplementation accelerated the time constant for the recovery of IET′ (τIET′). The time constant for the recovery of IET′ (τIET′) was inversely related to both the rate of peripheral fatigue development and the time to task failure.en
dc.description.affiliationHuman Performance Laboratory UNESP, S.P.
dc.description.affiliationDepartment of Internal Medicine University of Utah
dc.description.affiliationGeriatric Research Education and Clinical Center VA Medical Center
dc.description.affiliationDepartment of Kinesiology Kansas State University
dc.description.affiliationUnespHuman Performance Laboratory UNESP, S.P.
dc.identifierhttp://dx.doi.org/10.1080/17461391.2022.2159539
dc.identifier.citationEuropean Journal of Sport Science.
dc.identifier.doi10.1080/17461391.2022.2159539
dc.identifier.issn1536-7290
dc.identifier.issn1746-1391
dc.identifier.scopus2-s2.0-85145312413
dc.identifier.urihttp://hdl.handle.net/11449/249526
dc.language.isoeng
dc.relation.ispartofEuropean Journal of Sport Science
dc.sourceScopus
dc.subjectcreatine
dc.subjectExercise tolerance
dc.subjectrecovery
dc.subjectsevere-intensity domain
dc.titleDoes creatine supplementation affect recovery speed of impulse above critical torque?en
dc.typeArtigo
unesp.author.orcid0000-0002-7611-9759[4]
unesp.author.orcid0000-0003-0775-1889[5]

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