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Area of Science:

  • Sports Science
  • Biomechanics
  • Exercise Physiology

Background:

  • Force-velocity imbalance (FVimb) affects athletic performance.
  • Individualized training may optimize the force-velocity (F-v) profile.
  • Understanding adaptation and de-training kinetics is crucial for program design.

Purpose of the Study:

  • To analyze changes in force-velocity-power variables and jump performance.
  • To investigate individual adaptation kinetics to an optimal F-v profile.
  • To examine de-training kinetics following an individualized training program.

Main Methods:

  • Sixty subjects were grouped by initial force-deficit (FD) or velocity-deficit (VD).
  • Training continued until each individual reached their optimal F-v profile.
  • Mechanical and performance variables were measured periodically during and after training.

Main Results:

  • FD groups showed significant increases in maximal force and jump height.
  • VD groups demonstrated significant increases in maximal velocity and jump height.
  • Adaptation time correlated with initial FVimb magnitude; no significant de-training occurred over 3 weeks.

Conclusions:

  • Individualized training based on FVimb type and magnitude enhances jumping performance.
  • Tailored training prescription, monitoring, and periodization are key for effectiveness.
  • The optimal F-v profile is trainable, with sustained performance post-intervention.