Rather than dangerous a better term is questionable. For me these exercises are questionable regardless of the context. This is my list (probably not all inclusive, just off the top of my head) :
- Leg Extension & Leg Curls
- Preacher Curls
- Seated or Standing behind the neck press with a bar
- Behind the neck Pulldowns
- RDL’s
- Good Morning
- Seated Leg Press
- Ham/Glute Raise
- Back Hyperextensions
- Straight Leg Hook
- Lying Sit-ups
Now that I look at this list I realize that at sometime in my career I have had a negative experience with these exercises at one time or another.