These data were collected from the 2018 Youth National Championships in Michigan and permission for sharing results was granted by USAW. The file below contains data from countermovement jumps (CMJ) performed on a jump mat.
Study Description: The CMJ testing was conducted with a jump mat (Probotics Inc., Huntsville, AL USA). Each weightlifter provided two trials with maximum effort while holding a PVC pipe on the back of the shoulders. Countermovement jump heights (CMJH) from the two trials were then averaged as a performance score for each weightlifter.
ICC (two-way mixed with absolute agreement for single measurement) = 0.983
Standard error of measurement = 1.36cm
1/31/2019 04:54:25 am
My son perticipated in the above study U13. One thing that i noted in the study was his inconsistent performance between the 5 different jumps he performed with the bar on his back. After he was done he mentioned the bar hit a vertebra when he landed on a early jump which kept him from trying hard during the actual test. U13 athletes have less back musculature to act as padding and may influence the results if the bar “tags” them in process. You may want to consider useing a pad with this group of athletes as I doubt he was the only one to experience this.
8/13/2019 06:15:15 pm
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