KNES 351 Lecture Notes - Lecture 14: One-Repetition Maximum, Correlation Does Not Imply Causation, Systematic Chaos
Document Summary
Athletic stance (bent over: knees and hip flexed but hamstring and glutes are stretched): stretch enhances force production, acute stretch: the faster you put a muscle on stretch, you increase force production. Constant motion overcomes inertia: it is easier to move something when it is already moving, even if the motion is in the wrong direction. Force velocity curve: as force goes up, velocity slows down; the heavier something is, the slower you can move it, power can be plotted against a force velocity curve; power intersects with force around 30% 1rm. This is where peak power typically occurs. Below 30%, tension is high but velocity is low; above. 30%, velocity is high but tension is low. Does not work for complex human movements however: peak power can shift to the right through 3 mechanisms. You get stronger (i. e. your 1 rm increases). Your peak power percentage relative to 1 rm shifts to the right as you get stronger.
