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Anthropometry-driven block setting improves starting block performance in sprinters.

Valentina Cavedon1, Marco Sandri1, Mariola Pirlo2

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An anthropometry-driven block setting (AS) improves sprint start performance compared to the usual block setting (US). This effect is most pronounced in metricormic sprinters, suggesting personalized settings enhance athletic outcomes.

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Area of Science:

  • Sports Science
  • Biomechanics
  • Athletic Performance

Background:

  • Optimizing sprint start technique is crucial for athletic performance.
  • Traditional block settings may not cater to individual biomechanical differences.

Purpose of the Study:

  • To compare the effects of a usual block setting (US) and an anthropometry-driven block setting (AS) on sprint start kinematics and kinetics.
  • To investigate if the sprinter's Cormic Index (trunk and lower limb proportions) influences the effectiveness of AS.

Main Methods:

  • Forty-two sprinters performed maximal 10 m sprints under US and AS conditions.
  • Force, velocity, and timing parameters were measured using dynamometric blocks and photocells.
  • Sprinters were categorized into brachycormic, metricormic, and macrocormic groups based on their Cormic Index.

Main Results:

  • The anthropometry-driven block setting (AS) significantly improved key kinematic and kinetic parameters, including block velocity, force, impulse, and step lengths, compared to the usual block setting (US).
  • AS demonstrated a significant increase in rear peak force and rear force impulse for metricormic and brachycormic sprinters.
  • A relationship was observed between rear block kinetic variables and the adjustment in front block/starting line distance between US and AS.

Conclusions:

  • The anthropometry-driven block setting (AS) enhances sprint start performance over the usual block setting (US).
  • AS appears most beneficial for metricormic sprinters, highlighting the potential for individualized equipment setup.
  • Further research is needed to fully understand the relationship between block setting, Cormic Index, and sprint start dynamics.