Thread: Cardio Cardio Cardio Cardio
9/15/2008 5:05pm, #61
Originally Posted by Fighting Cephalopod
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Btw for my hanging leg lifts I hold a 10 pound medicine ball between my knees and raise it as high as possible, I do not straighten my legs at a 90 degree angle, maybe it works because I'm focusing on my abdomen and making an effort to raise it that way, or maybe it's just natural, but I have no doubt that it does work.
9/15/2008 5:30pm, #62Originally Posted by Quija
The Iliopsoas, particularly the Psoas portion, happens to lie deep below the lower portion of the Rectus Abdominous.
-You perform a certain exercise (the hanging leg lifts, if I recall correctly)
-You feel the burn in a certain region of your body (your front lower abdomen)
-You look at an anatomic image (like the one in this post) and see a muscle that overlaps with the area of the burn
-You assume that the burn is in the overlapping portion of the muscle in question, and thus the exercise works that portion of the muscle
The problem with this reasoning is in the third step - namely, the rectus abdominus overlaps with the iliopsoas, which is the muscle that's actually "burning".
Originally Posted by Quija
9/15/2008 5:32pm, #63
Undisputed KING OF ASSHOLES.
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9/15/2008 5:49pm, #64
Addendum: Lockridge's statement depends on the fact that the muscle fibers of the rectus abdominus run uninterrupted from the ribcage to the pelvis. What confused me initially was the presence of the tendinous intersections - all the diagrams I'd seen implied that these intersections ended one muscle fiber and started another. This appears to not be the case:
The anterior layer of the rectus sheath is firmly attached to the rectus muscle at three or more tendinous intersections. When this muscle is tensed in muscular persons, each stretch of muscle between the tendinous intersections is indicated by grooves in the skin between the muscle bulges.