The effect of session order on the physiological, neuromuscular, and endocrine responses to maximal speed and weight training sessions over a 24-h period

Johnston, M, Johnston, J ORCID: https://orcid.org/0000-0003-2954-5234, Cooke, CJ, Costley, L, Kilgallon, M and Kilduff, LP, 2017. The effect of session order on the physiological, neuromuscular, and endocrine responses to maximal speed and weight training sessions over a 24-h period. Journal of Science and Medicine in Sport, 20 (5), pp. 502-506. ISSN 1440-2440

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Abstract

Objectives: Athletes 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 hours. Design: 15 academy rugby union players completed this randomized crossover study. Method: Players performed a weight traiing session followed 2 hours later by a speed training session (WS) and on a separate day reversed the order (SW). Countermovement jumps (CMJ), perceived muscle soreness (MS), and blood samples were collected immediately prior, immediately post, and 24 hours post sessions one and two respectively. Jumps were analyzed for power, jump height, rate of force development, and velocity. Blood was analyzed for testosterone (T), cortisol (C), lactate and creatine kinase (CK). Results: There were no differences between CMJ variables at any of the post training time points (p > 0.05). Likewise, CK, T, C , and MS were unaffected by session order (p > 0.05). However, 10 meter sprint time was significantly faster (Mean ± SD; SW 1.80s ± 0.11 vs. WS 1.76 ± 0.08s; 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). Conclusions: The sequencing of strength and speed training does not affect the neuromuscular, endocrine, and physiological recovery over 24 hours. However, speed may be enhanced when performed as the second session.

Item Type:	Journal article
Publication Title:	Journal of Science and Medicine in Sport
Creators:	Johnston, M., Johnston, J., Cooke, C.J., Costley, L., Kilgallon, M. and Kilduff, L.P.
Publisher:	Elsevier
Date:	May 2017
Volume:	20
Number:	5
ISSN:	1440-2440
Identifiers:	Number Type 10.1016/j.jsams.2016.03.007 DOI S1440244016300032 Publisher Item Identifier
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	20 Jun 2017 14:01
Last Modified:	20 Jun 2017 14:01
URI:	https://irep.ntu.ac.uk/id/eprint/31026

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