Acute Neuromuscular Fatigue of a Random Vs Constant Session of Repeated Standing Long Jumps.
There is little evidence of the acute effect of random practice, performed by solely varying the intensity but not the task itself, as compared to block practice, i.e. when one task is repeated in a constant manner. This study aimed to examine the acute neuromuscular effects of physical exercise con...
| Publicado en: | Journal of Sports Science & Medicine Vol. 23; no. 4; pp. 895 - 907 |
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| Autores principales: | , , |
| Formato: | research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Hakan Gur, Journal of Sports Science & Medicine
Dec2024
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=181561552&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 181561552 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13032968 FYN jtl: Journal of Sports Science & Medicine issn: 13032968 maglogo: N pubinfo: dt: Dec2024 vid: 23 iid: 4 pid: 26030 pub: Hakan Gur, Journal of Sports Science & Medicine artinfo: ui: 181561552 181561552 181561552 10.52082/jssm.2024.895 181561552 ppf: 895 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Acute Neuromuscular Fatigue of a Random Vs Constant Session of Repeated Standing Long Jumps. aug: au: Dhote, Sylvain Gimenez, Philippe Grosprêtre, Sidney affil: EA4660, C3S Culture Sport Health Society, University of Franche-Comté, Besançon, France sug: subj: Neuromuscular Control Physiology Muscle Fatigue Therapeutic Exercise Standing Physiology Jumping Physiology Treatment Outcomes Human Randomized Controlled Trials Health Status Pretest-Posttest Design Movement Physiology Leg Physiology Extension Isometric Contraction Electromyography Descriptive Statistics Reflex Random Assignment Physical Performance ab: There is little evidence of the acute effect of random practice, performed by solely varying the intensity but not the task itself, as compared to block practice, i.e. when one task is repeated in a constant manner. This study aimed to examine the acute neuromuscular effects of physical exercise consisting of repeated jumps of randomized length. Fifteen healthy young participants completed 2 separate sessions of 90 minutes. They did 20 minutes of fatiguing exercise, consisting of 100 repeated standing long jumps (SLJ), in two different manners: one session with targeted jump length kept constant (CO), and one with targeted jump length being varied and unpredictable (RA). Pre- and post-tests were conducted before and immediately after, including measurements of Countermovement Jump (CMJ), SLJ, leg extension maximal voluntary isometric contractions (MViC), EMG activities of leg muscles and patellar tendon reflex amplitude (T-reflex: strike force and evoked force). Results showed that performances decreased after the repeated SLJs, independently of the condition (MViC decreased from 448 ± 118 N to 399 ± 122 N; CMJ decreased from 36.7 ± 7.2 cm to 34.6 ± 6.6 cm). EMG during MViC decreased by 21 ± 28 % from pre- to post-intervention. T-reflex decreased after both conditions ([Force/Strike] ratio decreased by 38 ± 69 % from pre to post). Subjective measures showed a greater sense of personal performance and enjoyment after the RA session. Results suggest that a randomly organized intensity of effort led to a similar decrease in physical performance compared to constant intensity when the session loads were matched. It also led to similar fatigue of the neuromuscular system as shown by T-reflexes and EMG measures. Nonetheless, random practice presents the benefit of being markedly more appreciated by participants. pubtype: Academic Journal doctype: research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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