dato che non li conoscevo prima, volevo sapere se i video che ho trovato su alcuni esercizi che mi sono stati consigliati mostrano il movimento corretto da effettuare:
Crunch alla stability ball
YouTube - Stability Ball Crunch - Better than Floor Crunches six pack
Cable crunches
YouTube - Cable Crunches for Abs
high cable chopper
Trunk Twist (Chopper) » Obliques » Exercise Encyclopedia » Videos » CoopersGuns Health, Fitness & BodyBuilding
plank
YouTube - Ab Exercise - The Plank
Crunch alla stability ball
YouTube - Stability Ball Crunch - Better than Floor Crunches six pack
Cable crunches
YouTube - Cable Crunches for Abs
high cable chopper
Trunk Twist (Chopper) » Obliques » Exercise Encyclopedia » Videos » CoopersGuns Health, Fitness & BodyBuilding
plank
YouTube - Ab Exercise - The Plank