Ab Flexion on Precor: Fast, Heavy, Short Arc

Using the Precor Ab Flexion machine with body supine, hand on handles

and feet anchored in foot locks: heavy reisistance at 30 to 35 lbs and

fast short arc repetitions of about 10 to 15 degrees.

Care taken to avoid neck compression and cheating with forward head

action or cervical flexion.

Short arc ab flexion is supposed to be a primary action of rectus

abdominis; however, lower obliques near iliac crests seem to be sore

from this exercise.

— mb