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Top speed sprinting: Thigh angular motion and eccentric hamstring strength in faster vs. slower sprinters.

Tobias Alt1, Igor Komnik2, Laurence J Ryan3

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Human Movement Science
|September 19, 2024
PubMed
Summary

Fast thigh motion and strong eccentric hamstring function are crucial for sprinters to achieve peak velocity. This study found both factors significantly correlate with top sprint speed in male athletes.

Keywords:
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Area of Science:

  • Biomechanics
  • Sports Science
  • Human Movement

Background:

  • Sprinting at maximum velocity demands rapid thigh movements and robust hamstring function.
  • Optimal hamstring strength is vital for both athletic performance and preventing injuries during high-speed running.

Purpose of the Study:

  • To investigate the relationship between thigh angular motion, eccentric hamstring strength, and maximal sprint velocity.
  • To determine if faster sprinters exhibit distinct kinematic and strength profiles compared to slower sprinters.

Main Methods:

  • Collected thigh angular kinematics during maximal velocity sprinting in 21 male sprinters.
  • Measured eccentric hamstring strength using an isokinetic dynamometer.
  • Correlated kinematic and strength data with measured top sprint speeds.

Main Results:

  • Significant positive correlations were found between thigh angular motion rates, eccentric hamstring strength, and top sprint speed (r ≈ 0.5, p < 0.05).
  • Faster sprinters demonstrated significantly higher thigh angular acceleration (11% greater) and eccentric hamstring peak moment (14% greater) compared to slower sprinters.
  • These findings support the hypotheses regarding the importance of both factors in sprint performance.

Conclusions:

  • Fast thigh angular motion and high eccentric hamstring strength are key determinants of maximal sprint velocity.
  • These biomechanical and strength characteristics are essential for optimizing sprint performance and potentially reducing injury risk.