Biceps Femoris Long Head Muscle Fascicles Actively Lengthen During the Nordic Hamstring Exercise.

ABSTRACT: Current debate exists around whether a presumed eccentric exercise, the Nordic hamstring exercise (NHE), actually causes active hamstring muscle lengthening. This is because of the decoupling that can occur between the muscle fascicle and muscle-tendon unit (MTU) length changes in relatively compliant human lower-limb MTUs, which results in MTU lengthening not necessarily causing muscle fascicle lengthening. This missing knowledge complicates the interpretation of why the NHE is effective at reducing running-related hamstring muscle injury risk in athletes previously unfamiliar with performing this exercise. The purpose of the study was therefore to investigate if the most-commonly injured hamstring muscle, the biceps femoris long head (BF), exhibits active muscle lengthening (i.e. an ecce

SUBMITTER: Raiteri BJ 

PROVIDER: S-EPMC8219857 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature