B1214N said:Matt JC said:B1214N said:You are right that too much tightness is bad for sprinters, but having extreme flexibility like a gymnast is detrimental for sprinters. There is a an amount of flexibility that is optimal, but not at extreme flexibility like in the case of the manna. I'm not confused with static stretching pre-workout and post-workout, but thanks for the reply anyways.Considering how fast I have seen gymnast sprint down a vault run way, I really doubt this is true. I have no data, but I would say our matured gymnastic athletes are easily running around a speed of 12 flat or less for a 100m. Which would be quite well considering they don't directly train for a sprinting event.
It may look fast, but it is not optimal. 12 flat in the 100m is a big difference from sub 10 or even sub 11. Even a couple tenths of a second is quite a big gap. You may be able to still get to sub 11 with extreme flexibilty, but you will not reach your potential with that much flexibility in the hamstrings and hips. In sprinting, you want every help you can get to get from point A to point B that comply with the rules and having some tightness or stiffness in the hamstrings is beneficial because it makes your tendons/hamstrings springy which would make it easier to sprint faster. So for sprinters you want enough stiffness that doesn't inhibit ROM and posture.
Just a quick point, but in adults tendons don't get longer. The muscles do.
The following is hypothetical in nature but based in well established science regarding intrinsic muscle force production. What probably happens with something like sprinting, which is a sport where you want peak actin-myosin overlap to occur in the range of motion where you are actually exerting force on the ground, is that if you stretch the hamstrings to the point where they get too long you will no longer have optimal overlap... the muscle can get too long and you won't quite have the ideal force production in the muscle itself. There are other issues that deal with passive tension, but it is unlikely that this plays a significant role.