A recently published study that used an inertial measurement unit sensor and sleeve identified an association between shoulder flexibility, arm speed and elbow varus torque in professional baseball pitchers.
Brittany Dowling, MS
, and colleagues recorded arm slot, arm speed, arm rotation and elbow varus torque with a motusBASEBALL sensor and sleeve (Motus Global) during 82,000 throws performed by 81 professional pitchers.
Results showed a significant relationship between arm slot, arm speed and arm rotation with elbow varus torque. Researchers found a 1-Nm increase in elbow varus torque within individual athletes was associated with a 13° decrease in arm slot, a 116° per second increase in arm speed and an 8° increase in arm rotation.
“Novel, wearable technology was used to determine the relationship between elbow varus torque and several throwing metrics in professional baseball pitchers,” Dowling told Healio.com/Orthopedics. “After assessing 82,000 throws, it was found that arm rotation, arm speed and elbow varus torque (and likely injury risk) are interrelated and should be considered collectively when treating pitchers. Unlike motion capture systems set up in laboratories, this wearable technology shows promise as a practical method for assessing the real time, on-field activity of pitchers as they progress through their normal throwing routines.” – by Casey Tingle
Disclosures: Dowling reports she is employed by Motus Global. Please see the full study for a list of all other authors’ relevant financial disclosures.