yes ive incorporated them into my training. they are best with a combination of isotonic. your first 2 sets you be isotonic 6-12 reps then the third set should be an isometric hold exerting as much tension and force possible
I work in physical therapy, and I am very fond of eccentric muscle contractions for strength, slow and controlled
Proud Bangmaid since August 2009
I like them and find they're effective and offer interesting variety and a different mental challenge along with the physical.
“If I didn't define myself for myself, I would be crunched into other people's fantasies for me and eaten alive.” --Audre Lorde
Check out Bud Jeffries' stuff on isometrics - Bud Jeffries Strongman Training | MMA Strength & Conditioning