RussianAbout this machine
This machine lets you work the trunk from a fixed position, making it easier to control the movement without pulling with the arms. Use it for a controlled curl or rotation, not for maximum load. Reduce the load if it makes you pull with the neck or arch the lower back.
Muscles worked
- Main load: Core.
- Stabilization: trunk muscles help hold position.
- Should not hurt: joints or lower back. If they do, reduce load and check setup.
How to set up
- For the Pure Kraft Rotating Abdominal Crunch, first check its source-listed detail: uses handles for a stable working position.
- Adjust the seat, roller, or chest support for your height.
- Secure the pelvis and feet so the movement comes from the trunk.
- Choose a range that does not irritate the lower back.
- Start with a load you can control on the return.
How to perform
Main exercise: rotating abdominal curl.
- On the Pure Kraft Rotating Abdominal Crunch, move smoothly through this model's working path.
- Do not pull with the arms when the handles are only for support.
- Pause briefly at the working end of the range.
- Return slowly while keeping trunk tension.
Common mistakes
- Jerking the torso instead of controlling the contraction.
- Using a range that causes lower-back discomfort.
- Pulling with the arms instead of the trunk.
- Losing pelvis or foot fixation.
- Ignoring this model-specific detail: uses handles for a stable working position.
Technique video
Sources: gym80.de product page for 4342N; gym80.de image saved locally; video embedded from the original YouTube source. PDF data: page 62, printed page 60.