The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

M. Johnston, C.J. Cook, D. Drake, L. Costley, J.P. Johnston, L.P. Kilduff

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The neuromuscular, biochemical, and endocrine responses to a single-session vs. double-session training day in elite athletes. J Strength Cond Res 30(11): 3098-3106, 2016-The aim of this study was to compare the acute neuromuscular, biochemical, and endocrine responses of a training day consisting of a speed session only with performing a speed-and-weights training session on the same day. Fifteen men who were academy-level rugby players completed 2 protocols in a randomized order. The speed-only protocol involved performing 6 maximal effort repetitions of 50-m running sprints with 5 minutes of recovery between each sprint, whereas the speed-and-weights protocol involved the same sprinting session but was followed 2 hours later by a lower-body weights session consisting of 4 sets of 5 backsquats and Romanian deadlift at 85% one repetition maximum. Testosterone, cortisol, creatine kinase, lactate, and perceived muscle soreness were determined immediately before, immediately after, 2 hours after, and 24 hours after both the protocols. Peak power, relative peak power, jump height, and average rate of force development were determined from a countermovement jump (CMJ) at the same time points. After 24-hours, muscle soreness was significantly higher after the speed-and-weights protocol compared with the speed-only protocol (effect size η = 0.253, F = 4.750, p ≤ 0.05). There was no significant difference between any of the CMJ variables at any of the posttraining time points. Likewise, creatine kinase, testosterone, and cortisol were unaffected by the addition of a weight-training session. These data indicate that the addition of a weight-training session 2 hours after a speed session, whereas increasing the perception of fatigue the next day does not result in a difference in endocrine response or in neuromuscular capability.

    Original languageEnglish
    Pages (from-to)3098-3106
    Number of pages9
    JournalJournal of Strength and Conditioning Research
    Volume30
    Issue number11
    DOIs
    Publication statusPublished - 2016

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    Athletes
    Weights and Measures
    Myalgia
    Creatine Kinase
    Hydrocortisone
    Testosterone
    Football
    Running
    Fatigue
    Lactic Acid
    Body Weight
    Power (Psychology)

    Cite this

    Johnston, M. ; Cook, C.J. ; Drake, D. ; Costley, L. ; Johnston, J.P. ; Kilduff, L.P. / The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes. In: Journal of Strength and Conditioning Research. 2016 ; Vol. 30, No. 11. pp. 3098-3106.
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    The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes. / Johnston, M.; Cook, C.J.; Drake, D.; Costley, L.; Johnston, J.P.; Kilduff, L.P.

    In: Journal of Strength and Conditioning Research, Vol. 30, No. 11, 2016, p. 3098-3106.

    Research output: Contribution to journalArticle

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