Yes, it is a thing. In fact it is much more valuable to establish a higher box jump 1rm than it is to ALWAYS jump for reps or for time. But why? Well the same reason we look to increase our 1rm on certain lifts. If we want to get stronger and faster another great measure to seek to improve is our ability to jump.
When we improve our overall strength by increasing our front squat, other movements that involve the front squat get easier. An example of this is the thruster. The more that you can front squat then the higher a 95lb. thruster feels! The same goes with jumping even though we don’t often consider this. If I can jump onto a 50 inch box, it is extremely easy for me to repetitively jump onto a 24inch box. But think about the poor chap who can only jump to a 30 inch box on his best day, should he be jumping also to 24inches like I am? If he tries he will sadly be left in the dust, and with good reason.
How about safety? When we think about safety of jumping this also plays a role. This is why scaling is so important even when its not weights that we are adjusting! If my 50 inch box jump leaves 24 inches seeming easy thats because it is less than 50% of my 1rm. If my peer can only, at his best jump to 30 inches, that leaves him jumping to 80% of his highest jump for multiple reps. Imagine trying to go head to head with someone in a workout that they were only asked to squat 50% of their max and you were still trying to squat 80% of yours…..this turns into a completely different workout! Consider these things as we just discussed scaling as we go through the week and even into movements that don’t consider “loading”. Coach’s same to you, most coaches are blind to this importance and severity when it comes to safety. Better to scale box jump volume or height in a WOD for those less vertically inclined than to simply have them just go for it!
Build to highest Box jump possible on a single leg! (each leg)
14 Pull Ups
7x Box Jumps (30/24)
7 rounds for time!