Concentric – muscle shortens
Eccentric – muscle lengthens
Isometric – muscle length remains the same
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The majority of strength routines focus on concentric and isometric/static contractions.  Those familiar with gym or fitness center strength training mostly utilize concentric exercise.
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At MyoZone, we utilize all 3 aspects of muscle contraction but we specializes in eccentric loading.  We have the ONLY system in Jacksonville that provides true eccentric resistance/loading  capable of delivering a therapeutic level of resistance during BOTH the concentric phase and the more beneficial eccentric phase.