Lecture Notes: Blake Leeper and the Debate on Prosthetic Advantages

Introduction to Blake Leeper

• Who is Blake Leeper?
  • 33-year-old US athlete
  • Born without fibulas, leading to amputation below the knees
  • Started using prostheses at 9 months old

Achievements

• Paralympic Success:
  • 8-time medalist in Paralympic Games
  • Holds US and World Paralympic records
• 2019 Milestone:
  • Ran 400m in 44.42 seconds, fastest time for an athlete with prosthetics
  • Qualified for Olympic Games but was denied participation

Controversy Over Fairness

• World Athletics' Decision:
  • Claimed Leeper had an unfair advantage due to his prosthetics
  • Raises ethical questions: How can someone born without legs be deemed to have an unfair advantage?

Biomechanics Perspective

• Presenter's Expertise:
  • Scientist and professor of biomechanics
  • Over 40 years of running experience
  • Consulted with multiple athletics organizations (US Paralympic team, NCAA, etc.)

Research Methodology

• Challenges in Study:
  • Difficult to compare athletes effectively due to ethical considerations
• Current Research:
  • Compared Blake Leeper's performance against elite non-amputee (N/A) sprinters
• Focus Areas:
  • Analyze acceleration, maximum speed, biomechanics, effort required, and fatigue rate

Study Setup

• Testing Blake:
  • Conducted in a lab at the University of Colorado Boulder
  • Employed various tools (cameras, force plates, radar guns) to measure performance

Key Findings

• Acceleration Out of Blocks:
  • Blakes's acceleration was 23% slower than non-amputees
• Timing:
  • Time to run 20m was 40% slower than sub-elite N/A sprinters
• Maximum Speed:
  • Maximum speed for Blake was 25.5 mph, slower than some N/A sprinters
  • Running prostheses result in 9% less ground force applied
  • Slower limb repositioning at maximum speed
• Curve Running:
  • Athletes with prosthetic legs demonstrated slower maximum curve running speed
• Effort and Fatigue:
  • Comparable or worse for athletes with prosthetic legs than for N/A athletes

Height Advantage Discussion

• Tall vs. Short Athletes:
  • Taller athletes generally have longer step lengths but slower step frequency due to the weight of their limbs
  • Not necessarily an advantage in maximum speed

Conclusion

• Summary of Findings:
  • Athletes with prosthetic legs do not have an advantage in several key performance metrics
• Scientific Support:
  • Research has been utilized to support inclusion of prosthetic athletes in various competitions, but biases remain
• Forward-Looking Statements:
  • Belief in the potential for prosthetics to outperform biological limbs, but current data suggest more research is needed
• Addressing Biases:
  • Encourage a fair and equitable approach in sports and life

Thank You

• Closing Thoughts:
  • Emphasized need for scientific data to combat biases and ensure fair treatment in athletics