What does everyone think about the use of isometrics for athletes? Lately I’ve been reading up alot about Jay Schroeder and DB Hammer, and while I don’t completely agree with alot of their stuff, I think the use of isometrics (not exclusively) is very interesting. Isometrics can be used to increase fascicle length in muscles and recruit fast-twitch muscle fibers (debatable), and I think the use of isometrics prior to plyometric / explosive / reactive training can be very beneficial.
Plyometric vs. isometric training influences on tendon properties and muscle output: https://www.find-health-articles.com/rec_pub_17685695-plyometric-vs-isometric-training-influences-tendon-properties-muscle.htm
Sprint performance is related to muscle fascicle length in male 100-m sprinters: https://jap.physiology.org/cgi/content/abstract/88/3/811
What does everyone think about the use of say squats, single-leg squats, lunges, split squats, and glute-ham raises performed isometrically?