Crunches
Yes
While performing a hanging leg raise one of the intended actions of the primary muscle, the iliopsoas, is to flex the thigh and the trunk during the exercise. Other primary muscles include the rectus femoris, tensor fascia lata, and adductors.
it works your abs
trunk flexion
The typical range of motion for a straight leg raise exercise is between 30 to 70 degrees.
To effectively perform a hamstring raise exercise, lie face down on a bench with your legs hanging off the edge. Keep your upper body stable and slowly lift your legs up towards the ceiling using your hamstrings. Lower them back down with control. Repeat for desired reps to strengthen your leg muscles.
trunk flexion lateral trunk flexion
it works your abs
Recus Abdominals. "Abs"
Some alternative exercises to the glute ham raise include Romanian deadlifts, hip thrusts, and single-leg hip bridges.
you can use the traditional leg raise movements like hanging leg raises or leg raises on inclined board or leg raises on flat surface or leg tucks you can also do crunching movements like floor crunch, cable crunch or crunches on inclined board other than this you can also do a third movement - twisting or side bend movement to hit your obliques
To perform a supine straight leg raise exercise, lie on your back with legs straight. Slowly lift one leg up, keeping it straight, until you feel a stretch in your hamstring. Hold for a few seconds, then lower the leg back down. Repeat on the other leg. Make sure to keep your back flat on the ground and avoid lifting your leg too high to prevent straining your lower back.