All good questions Sarah Without being in front of the person/body it's hard to pin-point exactly what that person would require, but typically it is due to a tight low back that compromises weak core/abs even more by not allowing the necessary pelvic tilt required to roll/peel the sacrum/lumbar spine off the mat. Indeed tight hamstrings effect the back as well. Bent knees assists in getting the low back to curl under (posterior tilt) and to control eccentrically on the 2nd phase of the exercise. Thanks for watching & hope that helps :)
Hi Lisa, this is very helpful!! thank you so much, i've been doing Pilates for 2 years and am always struggle with the roll up and down. At what point can we start doing it without any modification? Also, what would be the best stretching exercise or program you recommend to incorporate the roll up ? my instructor keeps sussing my flat back and tight spine and hip flexor that causing me not be able to do the roll up. thank you
Nora S Thank you so much for your kind words! It’s wonderful to hear that you’ve been practicing for 2 years. The Roll Up is challenging exercise, and many experience similar struggles, so you’re not alone. I had a very tight back when I began. The best advice is to continue your practice, and focus on spinal articulation that build strength and mobility, and stretches that open the hip flexors, seated forward folds, rolling exercises, and spine twists. I hope that was helpful! Thank you again 🩷