Quote:
Originally Posted by igetjokes
Closed-chain exercises put the joint in a far more stable position than open-chain. There's significantly less chance of injury with close-chain.
The Wikipedia article has a good definition:
http://en.wikipedia.org/wiki/Closed_...hain_exercises
Quote:
Closed kinetic chain exercises or closed chain exercises (CKC) are physical exercises performed where the hand (for arm movement) or foot (for leg movement) is fixed and cannot move. The hand/foot remains in constant contact with the surface, usually the ground or the base of a machine. These exercises are typically weight bearing exercises, where an exerciser uses one's own body weight and/ or external weight.
The opposite of CKC exercises are open kinetic chain exercises (OKC). Closed chain exercises are considered safer and more functional compared to open chain exercises.
Per the article, upper body closed chain exercises include push-ups and their derivatives, pull-ups or chin-ups, and dips, which concentrate on a co-contraction of the triceps, biceps, deltoids, pectorals, lats, abdominals and lower back for stabilization in various ratios depending upon angle and leverage. For lower body, closed chain exercises include squats, deadlifts, lunges, power cleans. These concentrate on a co-contraction of the quadriceps, hamstrings, hip flexors, soleus, and gastrocnemius muscles. The joints of movement include the knee, hip, and ankle.