Athletic Profile Calculator

NSCA sport performance literature identifies five primary physical qualities: strength (maximum force production), power (rate of force development), endurance (sustained aerobic capacity), speed (maximum velocity), and flexibility (range of motion). Together these qualities describe the athletic profile of any competitor.

Different sports demand vastly different physical quality combinations. A marathon runner needs exceptional endurance and moderate flexibility but minimal peak strength. A weightlifter needs exceptional strength and power but minimal endurance. Profiling identifies which qualities are limiting performance and guides training priority allocation.

Athletic power is measured through field tests such as the countermovement vertical jump, standing broad jump, medicine ball throw, or sprint acceleration. Laboratory measures include isokinetic dynamometry and force-velocity profiling on a force plate. The Sayers equation converts vertical jump height to estimated peak power output in watts.

Each physical quality responds to specific training stimuli. Strength: heavy compound resistance training (1-6 reps at 80-95% 1RM). Power: Olympic lifts, plyometrics, ballistic training. Endurance: progressive aerobic volume. Speed: sprint-specific neuromuscular training, resisted and assisted sprints. Flexibility: systematic stretching program.

No individual can simultaneously optimise all five qualities, as some create physiological interference. The most well-rounded elite athletes (decathletes, CrossFit competitors, rugby players) achieve high but not maximal levels in all qualities. Sport-specific training deliberately emphasises the qualities most valuable to competitive performance.