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Good morning. USC coaches rave about Director of Performance Trumain Carroll's impact in his first true offseason, a new Korean speed training device, and research showing tongue position affects hamstring strength by 30%. Let's get into it...
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💪 USC Coaches Rave About Trumain Carroll's First True Offseason
USC assistant coaches are praising the impact of strength coach Trumain Carroll in his first true offseason with the program. Carroll was hired from Kansas State last May, bringing two decades of experience. "Culture wise, the guy's as good as it gets. Those guys are scared to death of him in a great way," said linebackers coach Mike Ekeler. "They're gonna toe that line. They've got discipline, they got toughness, they got accountability. He demands all that, and he loves those guys, and they know it."
When the Trojans began spring practice in early March, they were noticeably bigger — redshirt freshman Alex Graham, cornerback RJ Sermons, linebacker Elijah Newby, and running back King Miller all stood out. Running backs coach Anthony Jones credits the holistic approach: "Coach Tru is one of the best in the country in his profession. We have a great line of assistants, as well as the nutrition staff, as well as the medical staff."Read More
🏃 New Korean Speed Training Equipment: HyperDrive
The HyperDrive is a new Korean invention for building speed that's going viral on X. It's unique for allowing incremental loading for both the carriage and the lever — the resistance gets heavier the further up the track you go. The progressive loading system means athletes face increasing resistance as they accelerate, which could help develop both initial acceleration and speed endurance in a single movement.
👅 Tongue Position Increases Hamstring Strength by ~30% in Isokinetic Testing
A 2014 study is going viral on X for its surprising findings. Research published in Muscles, Ligaments and Tendons Journal found that pressing the tongue to the roof of the mouth (palatine spot) increased knee flexion peak torque by approximately 30% compared to a neutral tongue position during isokinetic testing at both 90°/s and 180°/s.
Researchers tested 18 subjects with three tongue positions: middle (behind front teeth), lying on lower arch, and extended to palatine spot. The upper position showed significant improvements in hamstring performance but not knee extension. The mechanism isn't fully understood, but researchers speculate it involves CNS pathways linked to phasic muscle activity. Read More
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