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World 6 · Your Heart in a Race · 10 min · PRO

Heart rate, stroke volume and cardiac output

Q = HR × SV

PRO · Sports Science Lab

World 6: Your Heart in a Race is part of PRO

The first world of Sports Science Lab is free. PRO opens the other 23 lessons in 6 worlds — simulations, quizzes and all.

  • Three energy systems
  • VO₂ max and the Fick equation
  • Lactate, burning legs and sore muscles
  • Friction on rock
  • Hips in: body position and torque
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

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