Women’s volleyball is considered a high-risk sport for lower extremity, non-contact musculoskeletal injuries. As a ballistic sport, volleyball strength and conditioning coaches often use vertical jump and clean and jerk as performance measures to assess an athlete’s progress as well as performance. Research indicates both of these measures are directly impacted by lower kinetic chain biomechanics.
- Determine if assessing athletes with the ViPerform AMI™ and assigning them to a level of the ACL Play It Safe based on the results would have a measurable impact on injury rates at the end of the season
- Determine if performing the ACL Play It Safe would have an impact on the performance of the ViPerform AMI™
- If athletes improved on ViPerform AMI™ scores, was there a correlation to improvements in the vertical jump and clean & jerk?
All volleyball players on the women’s team were assessed using the ViPerform AMI™ at the beginning and end of the season. Based on the results of the test, each player was assigned to a level on the ACL Play It Safe program which they performed three days per week throughout the season and during the offseason. Analysis included:
- Comparison of injury data from the previous three years to current intervention period
- Comparison of individual player’s pre-intervention ViPerform AMI™ scores to post-intervention scores
- Comparison of individual player’s pre-intervention performance measures to post-intervention performance measures
Results for this group were as follows:
- Non-contact lower kinetic chain injuries (foot, ankle, knee, hip, and low back) were reduced by 60%.
- Players experienced an average of 41 point improvement on the ViPerform AMI™ after performing the ACL Play It Safe 3 days per week with an independent t-test P<.001 (sig @ P<.05). Improvements ranged from 21 to 54 points.
- Players experienced an average of 1.18-inch increase in VJ from stance (P<.02) and a 30 pound average increase in clean and jerk (P<.01)
To read Trent Nessler’s in-depth analysis of these studies, click here.