Reply To: KPI Test Results!

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John Zombro

Dr. B,

That’s great jump work! I salute you!

I used a 15-inch box and got 20 jumps in 17 seconds. Best broad jump so far was 66-1/2 inches but I’m determined to beat that later this week. The differences are interesting. The repeat broad jumps are all about timing and elasticity, and once you get in a rhythm you just roll. But the SBJ is a true test of concentric power, which I want to get more of.

Thanks for sharing and I can’t wait to see what happens later in the week for both of us as well as the rest of the group!

Coach JZ