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Current thresholds for high-speed running (HSR) and sprinting in field sports may underestimate actual demands. Researchers found that common HSR definitions align with jogging and striding speeds, not true sprinting paces.

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Area of Science:

  • Sports Science
  • Biomechanics
  • Exercise Physiology

Background:

  • Accurate quantification of high-speed running (HSR) and sprinting is crucial for training and performance in field sports.
  • Existing speed thresholds used to define HSR and sprinting may not accurately reflect the biomechanical demands experienced by athletes.

Purpose of the Study:

  • To determine the percentage of maximum speed (%Vmax) associated with distinct running gaits.
  • To clarify if commonly used HSR thresholds align with actual sprinting speeds in field sport athletes.

Main Methods:

  • Fifteen amateur field sport athletes performed 55-meter running trials at prescribed speeds corresponding to five gaits: jogging, running, striding, near maximum sprint, and sprint.
  • Running speeds were measured using Global Positioning Systems (GPS).
  • Running kinematics, including contact time, stride angle, and knee angle, were analyzed from high-speed (240 fps) video footage.

Main Results:

  • Specific speeds were identified for each gait: jogging (56%Vmax), running (66%Vmax), striding (78%Vmax), near maximum sprinting (87%Vmax), and sprinting (100%Vmax).
  • Increasing running speed led to significant increases in stride angle and significant decreases in contact time and midstance free-leg knee angle.
  • Commonly applied HSR thresholds likely correspond to jogging and striding speeds, not true sprinting.

Conclusions:

  • Current definitions of high-speed running and sprinting in field sports may underestimate the actual speeds athletes achieve.
  • Revised, higher speed thresholds are recommended to more accurately define HSR and sprinting demands in field sports.
  • This re-evaluation can lead to more precise training load monitoring and performance analysis.