The Bushnell Speedster Radar Gun, besides being one of the most cost-effective radar guns used in baseball, tennis, and soccer, is also utilized in the field of muscular research.In 2006, the Journal of Athletic Training published a study that investigated shoulder muscle fatigue and its relationship with injury risks in baseball players.Twenty players were tested on their ability to counteract an internal rotation of the arm in various situations.One group went right into the test, while the other group threw pitches, measured by the Speedster Radar Gun from Bushnell, until they were fatigued.