Backed by research
Learn the science behind each test we do and the potential impact on your arm
Internal Rotation Strength
Both velocity and accuracy decrease when the internal rotators become fatigued.
External Rotation Strength
The brakes for your arm…weak external rotators are linked to arm injuries.
Scaption Strength
Preseason scaption weakness increases your risk of throwing related injury.
Internal Rotation ROM
Loss of IR range of motion can alter shoulder biomechanics and increase the risk of injury.
External Rotation ROM
Change in ER range of motion can be early signs of an injury, fatigue, or a response to muscle tightness.
Flexion ROM
Limited or asymmetrical shoulder flexion is linked with an increased risk of elbow injury in pitchers.