I saw this version of the ab wheel roll out performed by strength coach Eric Cressey awhile back. I finally decided to give it a shot. Roll outs are an excellent exercise as part of your core training since they train the rectus abdominus through it’s primary movement which is anti-extension of the spine. And if you’re searching for that abdominal soreness, you’re going to get it through roll outs because of the eccentric nature of the exercise. But I must warn you. This is not a version of the roll out you should jump right into unless you’re aiming for some low back soreness also. If you’re not doing any roll outs presently, work on the stability ball version first then move onto the ab wheel and then may be this resisted version.