If You Can't Extend From Your Thoracic Spine, You're Squandering Power and Inviting Injury
RacquetFit instructor Jeff Salzenstein discusses the importance of spine mobility for durability in tennis and how you can assess your thoracic extension using the RacquetFit screen.
Leg Slide Test
By Dr. Greg Rose
A quick screen to see if your trunk has enough lateral flexion mobility to get into a great trophy position in your serve.