Ab Coaster or Abdominal Crunch Machine, a specialized piece of fitness equipment designed to target the core through a bottom-up motion.
Unlike traditional crunches that work from the top down, this machine helps you perform "reverse crunches" with more stability and less neck strain.
Key Functional Features
Bottom-Up Core Motion: The primary feature is the curved track that guides your lower body upward. This specifically targets the lower abdominals, which are often the hardest part of the core to engage.
3-in-1 Workout Capability:
Straight Crunch: Targets the central rectus abdominis.
Oblique Twist: The knee pad usually pivots/rotates, allowing you to slide side-to-side to target your "love handles" or obliques.
Freestyle: Allows for fluid movement between both types.