Integrated exercise physiology showing muscle fibers, metabolism, heart rate, and VO2 max

How Energy Systems, Heart Rate, and VO2 Max Shape Athletic Training

Connect muscle fibers, biomechanics, energy systems, heart rate, VO2 max, and resistance-training variables into one exercise-science framework.

Biomechanics illustration showing eccentric, concentric, and isometric movement

Understanding Biomechanics: Improve Strength, Stability, and Performance

Learn the basics of biomechanics, including muscle actions, forces, range of motion, neurological strength gains, and movement analysis.