Title

Modulation of countermovement jump-derived markers of neuromuscular function with concurrent vs. single-mode resistance training

Document Type

Journal Article

Publication Title

Journal of Strength and Conditioning Research

Publisher

Wolters Kluwer

School

School of Medical and Health Sciences

Comments

Pattison, K. J., Drinkwater, E. J., Bishop, D. J., Stepto, N. K., & Fyfe, J. J. (2020). Modulation of Countermovement Jump–Derived Markers of Neuromuscular Function With Concurrent vs. Single-Mode Resistance Training. The Journal of Strength & Conditioning Research, 34(6), 1497-1502. https://doi.org/10.1519/JSC.0000000000003587

Abstract

This study assessed changes in countermovement jump (CMJ)-derived markers of neuromuscular function with concurrent training vs. resistance training (RT) alone and determined associations between changes in CMJ parameters and other neuromuscular adaptations (e.g., maximal strength gain). Twenty-three recreationally active men performed 8 weeks of RT alone (RT group, n = 8) or combined with either high-intensity interval training cycling (HIIT + RT group, n = 8) or moderate-intensity continuous cycling (MICT + RT group, n = 7). Maximal strength and CMJ performance were assessed before (PRE), after 4 weeks of training (MID), and > 72 hours (maximal strength) or > 5-7 days (CMJ performance) after (POST) the training intervention. Improvements in CMJ relative peak force from both PRE to MID and PRE to POST were attenuated for both HIIT + RT (effect size [ES]: -0.44; ±90% confidence limit, ±0.51 and ES: -0.72; ±0.61, respectively) and MICT + RT (ES: -0.74; ±0.49 and ES: -1.25; ±0.63, respectively). Compared with RT alone, the change in the flight time to contraction time ratio (FT:CT) was attenuated from PRE to MID for MICT + RT (ES: -0.38; ±0.42) and from PRE to POST for both MICT + RT (ES: -0.60; ±0.55) and HIIT + RT (ES: -0.75; ±0.30). PRE to POST changes in both CMJ relative peak force and flight time:contraction time (F:C) ratio were also associated with relative 1 repetition maximum leg press strength gain (r = 0.26 and 0.19, respectively). These findings highlight the utility of CMJ testing for monitoring interference to improvements in neuromuscular function with concurrent training.

DOI

10.1519/JSC.0000000000003587

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