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July 31, 2026Research Quarterly for Exercise and Sport

Acute and Short-Term Neuromuscular and Perceptual Responses to Isometric vs. Dynamic Strength Training in Youth Soccer Players: A Randomized Crossover Trial

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Authors

FMFilipe MaiaInstituto Superior da MaiaGSGuy SauceInstituto Superior da MaiaJFJoão Francisco FerreiraInstituto Superior da Maia

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Implication

Randomized crossover trial compares neuromuscular impairments from isometric and dynamic training in youth soccer players, suggesting dynamic training may impair function more.

Key Points

  • This research aims to compare the immediate neuromuscular effects of isometric and dynamic strength training in youth soccer players.
  • Randomized crossover trial involving 21 male youth soccer players aged 16.8 years, starting with dynamic or isometric training.
  • Assessments included countermovement jump height and bar velocity at baseline, 30 minutes, and 24 hours post-exercise.
  • Repeated-measures ANOVA was performed to analyze differences in perceived soreness and fatigue across time points.
  • CMJ height was greater in the isometric condition at 30 minutes post-exercise (d = 0.71; p < .001).
  • Isometric training showed higher bar velocity 24 hours post-exercise compared to dynamic training (d = 0.69; p < .001).
  • Perceived fatigue was significantly lower in the isometric condition at 24 hours (d = 0.70; p < .05).

Cite This Study

Maia et al. (2026) studied this question.

synapsesocial.com/papers/6a6c46c0747664a1aa73bb9ahttps://doi.org/10.1080/02701367.2026.2709598
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Defining Training and Performance Caliber: A Participant Classification Framework2021 · 3,048 citations
  2. 2The Other Half of the Story: Effect Size Analysis in Quantitative Research2013 · 641 citations
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  4. 4Brief Review: Effects of Isometric Strength Training on Strength and Dynamic Performance2019 · 160 citations
  5. 5Velocity Loss as an Indicator of Neuromuscular Fatigue during Resistance Training2011 · 858 citations