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Related Experiment Video

Updated: Mar 10, 2026

Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors
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Construction of Constant-Load (Isotonic) and Constant-Velocity (Isokinetic) Torque-Velocity-Power Profiles In vivo for the Rat Plantar Flexors

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Changes in the Force-Velocity Mechanical Profile After Short Resistance Training Programs Differing in Set

Eliseo Iglesias-Soler1, Miguel Fernández-Del-Olmo1, Xián Mayo1

  • 11 University of A Coruna.

Journal of Applied Biomechanics
|December 6, 2016
PubMed
Summary
This summary is machine-generated.

This study found that resistance training set configuration impacts mean velocity but not strength adaptations. Focusing on maximum intended velocity, not actual velocity, is key for short-term strength gains.

Keywords:
kineticsknee extensionpower outputstrength

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Area of Science:

  • Biomechanics
  • Exercise Physiology
  • Sports Science

Background:

  • Understanding the impact of resistance training set configurations on mechanical force-velocity profiles is crucial for optimizing training outcomes.
  • Previous research has explored various training variables, but the specific effects of set configuration on force-velocity dynamics require further investigation.

Purpose of the Study:

  • To analyze the effect of two distinct resistance training set configurations (traditional vs. interrepetition rest) on mechanical force-velocity profiles.
  • To determine if differences in training velocity between configurations influence strength adaptations.

Main Methods:

  • Thirteen participants completed a 5-week unilateral knee extension program with randomized set configurations: traditional (4x8 reps) or interrepetition rest (32x1 rep).
  • Repetition velocity was recorded throughout, and individual linear force-velocity relationships were calculated pre- and post-training.
  • Key parameters analyzed included force/velocity intercepts, slope, and estimated maximum power.

Main Results:

  • Interrepetition rest resulted in higher mean training velocity compared to the traditional configuration (P < .001).
  • Both protocols led to significant increases in force and velocity intercepts and a steeper negative slope (P < .001).
  • No significant differences in adaptations were observed between the training configurations.

Conclusions:

  • Short-term resistance training adaptations are not significantly affected by differences in set configuration velocity.
  • Maximizing intended velocity, rather than actual velocity, appears to be the critical factor for modulating strength adaptations in the short term.