Modulation of Countermovement Jump–Derived Markers of Neuromuscular Function With Concurrent vs. Single-Mode Resistance Training

Kristy J. Pattison; Eric J. Drinkwater; David J. Bishop; Nigel K. Stepto; Jackson J. Fyfe

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Modulation of Countermovement Jump–Derived Markers of Neuromuscular Function With Concurrent vs. Single-Mode Resistance Training

Kristy J. Pattison ^[1] ; Eric J. Drinkwater ; David J. Bishop ; Nigel K. Stepto ; Jackson J. Fyfe ^[2]
1. [1] Deakin University
  
  Deakin University
  
  Australia
2. [2] Institute for Health and Sport, Victoria University, Melbourne, Australia
Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 34, Nº. 6, 2020, págs. 1497-1502
Idioma: inglés
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Resumen
- 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 (r2 = 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.