- Produce Force (Hop)
- Absorb Force (Leap)
- Evaluate any Asymmetries in both catagories
The test is also completely relative to the individual as the formula to for scoring is based on the individual's height. A asymmetry score of 0-5 is ideal and between 6-10 is okay. Any symmetry score greater than 10 is considered a red zone and that athlete is at much greater risk for injury in a non-contact situation. For more information check out the Lower Body Performance DVD.
Below are the results and team trends:
- 18 female college soccer players were tested
- Hop Test (force production)
No statistical difference b/t right and left legs
However, there was a percentage difference (L=78% R=73%)
Team Avg= 76% so this is what the minimum should be for passing the screen for force production
8 out of 18 players were in double digits for asymmetry - Leap (force absorption)
Extremely high statistical significance between both legs
Onto L= 120 Onto R=107
14 out of 18 players were in double digits and 3 of the 14 were above a score of 20 asymmetrically
Summary of Data
- Yet again these team results show the importance of addressing force absorption in a training and injury prevention program. There are a handful of players that are at great risk of suffering a non-contact lower extremity injury due to lack of symmetry in both force production and force absorption
- Including plyometrics such as 'hop and stick' or 'jump and stick ' under one second along with some basic force production exercises (lunges, step-ups, split squats) at the end of practice will help improve these test scores during the beginning of this season
I will be posting much more data here in the near future as well as some additional plug-in screens that I have included in use with the Hop & Stop Test.