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Anonymous
Core balls are made for training all the small stabilizers, especially in your back.
If you have back pain, not because of heavy lifts, but because you dont use your back so much, then these are very well.
i have no core ball, but i did have back pain until i started making some fagget looking exercises (:
artikle is here : http://www.t-nation.com/free_online_article/sports_body_training_performance/making_gains_with_pain
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