I've been doing pilates recently and we often do a lying leg raise, either with or without bent knees:
Doing a singular leg is fine for me, I have no issues. However doing a double leg raise and I start to really struggle and can't hold the position long (It's not painful, just difficult).
My lower back muscle has been known to be weak and prone to damage, so I'm aware it needs work on. Are there other exercises I compliment to help strengthen that muscle without doing the lying back raise?
I would like to be able to do the exercises as we do many repetitions with different things, like with a pilates ring between the legs, holding balls in our hands and moving our arms back and forth, and so on. Not being able to hold the position for a long time does make it difficult to keep up with the class.