concentric muscle contraction definition
Concentric contractions: A concentric contraction is a type of muscle contraction where the length of the muscles shorten while undergoing tension. For example, when you pick up a curl bar and perform a biceps curl, the length of your biceps muscles shorten.Your hands start down by your sides, and ends with your hands up by your shoulders.nd it is these three different types of muscular tensions that are used to define the three different types of muscular âcontractionsâ. The three different types of muscular contractions, therefore, are: 1  Concentric contractions (shorten), 2  Eccentric contractions (lengthen). 3  Isometric contractions (remain the same).