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The effect of session order on the physiological, neuromuscular, and endocrine responses to maximal speed and weight training sessions over a 24-h period / Michael Johnston, Julia Johnston, Christian J. Cook, Lisa Costley, Mark Kilgallon, Liam Kilduff

Journal of Science and Medicine in Sport, Volume: 20, Issue: 5, Pages: 502 - 506

Swansea University Author: Liam Kilduff

Abstract

ObjectivesAthletes are often required to undertake multiple training sessions on the same day with these sessions needing to be sequenced correctly to allow the athlete to maximize the responses of each session. We examined the acute effect of strength and speed training sequence on neuromuscular, e...

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Published in: Journal of Science and Medicine in Sport
ISSN: 1440-2440
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa26951
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Abstract: ObjectivesAthletes are often required to undertake multiple training sessions on the same day with these sessions needing to be sequenced correctly to allow the athlete to maximize the responses of each session. We examined the acute effect of strength and speed training sequence on neuromuscular, endocrine, and physiological responses over 24 h.Design15 academy rugby union players completed this randomized crossover study.MethodsPlayers performed a weight training session followed 2 h later by a speed training session (weights speed) and on a separate day reversed the order (speed weights). Countermovement jumps, perceived muscle soreness, and blood samples were collected immediately prior, immediately post, and 24 h post-sessions one and two respectively. Jumps were analyzed for power, jump height, rate of force development, and velocity. Blood was analyzed for testosterone, cortisol, lactate and creatine kinase.ResultsThere were no differences between countermovement jump variables at any of the post-training time points (p > 0.05). Likewise, creatine kinase, testosterone, cortisol, and muscle soreness were unaffected by session order (p > 0.05). However, 10 m sprint time was significantly faster (mean ± standard deviation; speed weights 1.80 ± 0.11 s versus weights speed 1.76 ± 0.08 s; p > 0.05) when speed was sequenced second. Lactate levels were significantly higher immediately post-speed sessions versus weight training sessions at both time points (p < 0.05).ConclusionsThe sequencing of strength and speed training does not affect the neuromuscular, endocrine, and physiological recovery over 24 h. However, speed may be enhanced when performed as the second session.
Keywords: Testosterone; Cortisol; Creatine kinase; Neuromuscular fatigue; Speed; Strength
College: College of Engineering
Issue: 5
Start Page: 502
End Page: 506