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Category

Strength & Conditioning

Document Type

Paper

Abstract

The purpose of this study was to determine if the ability to perform the Nordic hamstring exercise (NHE) impacts upon the fascicle dynamics of the bicep femoris long head during the NHE performed flat, declined and inclined. 10 physically active individuals (8 males and 2 females, age 24.1±3.9 years, body mass 81.8±8.9kg, height 178.8±7.7cm) with a history of performing the NHE, were separated into two equal groups of high and low performers of the NHE via break point angle assessed using 3D motion capture. Dynamic ultrasound (US) videos were collected using a 10cm probe, while semi-automatic software analysed the dynamic US videos. Fascicle lengthening during the NHE is dependent on NHE performance ability, with likely differences (non- overlapping control limits) between high and low performers. While absolute fascicle change was greater in the incline NHE for low performers, greater FL change was observed in the flat NHE for high performers. This could be as a result of the high performers possessing greater resting fascicle length and eccentric hamstring strength.

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