Crunch on a flat bench with hips flexed to 90 degrees and feet in suspension

Edited by Dr. Massimo Bonazzelli

Synonyms

The flat bench press crunch exercise with hips flexed to 90 degrees and feet in suspension is also known as a crunch

Type of Exercise

Crunch on a flat bench with hips flexed to 90 degrees and feet in suspension is a monoarticular exercise

Variants

• Crunch on the ground
• Crunch with hips flexed to 90 degrees and feet supported on elevation
• Crunch with hips flexed to 90 degrees and feet in suspension
• Crunch on a flat bench with hips flexed to 90 degrees and feet supported on a rise

Crunch on a flat bench with hips flexed to 90 degrees and feet in suspension: Execution

The starting position sees the athlete lying supine on a bench with the hips flexed at 90 ° and the legs in suspension. The angle at the level of the hips must remain constant for the entire duration of the exercise. The portion of the body initially at contact with the bench goes from the lower angle of the shoulder blades (variable subject to the anthropometric characteristics of the athlete) to the buttocks, while the shoulder blades and head are suspended and tilted downwards in order to fully stretch the rectus abdominis. The hands can be held. along the hips, crossed on the chest, on the sides of the head at the height of the temples, or behind the head with the shoulders fully flexed and the elbows extended. The list has been written in ascending order of difficulty. Once established where to place the limbs, it is no longer possible to change this parameter except as a cheating technique or to lighten the load during a series in "stripping". The execution consists when performing a spine flexion, taking care to keep the lower back in contact with the bench for the entire duration of the exercise. The distance between the chin and the sternum should remain as constant as possible. The range of motion is reduced, as lifting the back too much will also flex the hip, turning the crunch into a sit-up. In case the lower back comes off the bench during the exercise, despite the " athlete undertakes to avoid it, it is necessary to switch to a less demanding variant of crunch. To emphasize the work of the oblique abdominals, it is possible to perform the concentric phase of the movement by twisting the torso towards the right side; in this movement the work of the external obliques of the left side and of the internal obliques of the right side is maximized. The movement is one-sided and the description refers to the right side. Repeat in a mirror image for the left side.

Muscles involved in bench press crunch exercise with hips flexed to 90 degrees and feet in suspension

Group 0

• Rectus abdominis
• External obliques
• Internal obliques

Function of the stabilizing muscles: Stability of the spine and hips and knees

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