if this was the case, every NBA player would have a 48" vertical jump. Every 100m sprinter would be running sub 9.8 seconds. Speed and power is entirely genet

if this was the case, every NBA player would have a 48" vertical jump. Every 100m sprinter would be running sub 9.8 seconds. Speed and power is entirely genetic. you're either fast or not. you can either jump high or you can't. you can improve it but only by slim margins. Strength however, can be trained and improved greatly and well into middle age, which is why barbell training is so popular.