SPEAKER_02 39:22–42:01
If I have to reduce the field of external rotation that I have available to me, which is representative of the amount of motion that I need to demonstrate ranges of motion or velocity, if I have to compress that to increase my force production, I have now again created an interference. So bilateral symmetrical exercises are well designed to increase my ability to produce a compressive strategy, which allows me to increase my peak forces at the right time. Hypertrophy is a byproduct of that. Hypertrophy by itself, again, to develop any significant amount of hypertrophy, there's going to be some compressive strategies associated, but it doesn't necessarily mean that it's interference. So again, the way that we figure this stuff out Andrew is that we train people and so we actually have to do things and we determine what is the best course of action and so we have to have some form of key performance indicator that is going to allow us to determine whether we're on the right path or not. So if I'm trying to improve someone's acceleration so let's say that I'm measuring their acceleration through a 10 meter sprint from a standing start I take them into the gym, I train them, I bring them back, and I retest that 10 meter sprint. And if that continues to improve, then my strategy in the weight room is good. And so if I'm using bilateral symmetrical activities to do that, great. But at some point in time, and maybe it happens and maybe it doesn't, at some point in time, it can become interference. The only way that you can tell whether this is going to happen is as you train them. And again, this is why we monitor key performance indicators. So if I increase force production, if I reduce my external rotation field, but I don't need that range of motion to perform my activity, then again, I'm not creating interference. So all of these activities are great activities. We use them all the time. We have to buy bigger trap bars because we have people that can pull so much weight that we don't have enough room to put the weights on. And so again, these are not bad things. Bilateral symmetrical activities are very, very useful at certain times for certain people in certain circumstances. What you have to do is you have to understand that this is always an N equals one experiment and we're talking about an individual here and then their response to training. So again, we've always got the expansion, compression, expansion on the table as a representation of movement. We superimpose force production on top of that to determine what is going to be the best course of action under a specific context. We don't know exactly where they are. We don't know how changeable they are. We don't know to what degree we need to make a change to get the influence that we want. So this becomes the experiment, but as long as you're following the principles, that's where you're safest in doing your work.
force productioncompressive strategiesbilateral symmetrical exercisesexternal rotationkey performance indicators