SPEAKER_06 8:08–10:50
Right. Okay. So, here's going to be the difference. The longer I stretch the band, this is a change in acceleration. If I'm at the top of a squat and the band is pulling downward, at the very top of the squat, acceleration is actually increasing, but it's a negative acceleration. Acceleration is described as positive or negative. So what people call deceleration is actually just acceleration in the opposing direction. So acceleration is increasing in a negative manner, which means that velocity is dropping at the top. As I go down in the squat and the band is compressing, velocity increases as I go down. I can actually go down faster than the guts on the inside if I can do it faster. As I accelerate my way downward and the guts are floating, then they come down and land on the bottom of the pelvis at the bottom of the squat where I actually have to come to a stop. And then they hit, they land on the guts. Depending on how fast that entire system takes place determines what the behavior will be as I hit the bottom of the squat. It's like, do I distribute this load through the connected tissues? So I expand, I yield, and then that helps me to snap myself back up. Or is the tension so high that I hit and it becomes very, very stiff? Again, there's a sweet spot. This is why you'll see people, when they're squatting with band resistance, the weight on the bar tends to be well below what they would lift for a maximum load. The better the power lifter, the lower the bar weight tends to be with a band-resisted squat because they're trying to create the yielding action. They're trying to emphasize the yielding action at the bottom of the squat so they can absorb the energy and use that to make the turnaround, kind of like we were talking about with the weight releaser, so they can create a faster impulse upward.
band resistanceacceleration physicsenergy absorptionyielding actionpowerlifting