Hamstring mechanical adaptations to eccentric training. (IMAGE)
Caption
Adaptations in the hamstring muscle-tendon unit following a 9-week eccentric training program. The results demonstrate that while training allows muscle fibers to operate over significantly longer active lengths (top right), the estimated active sarcomere lengths remain near their optimal range for force production (bottom right). This suggests that the muscle adapts to the high demands of the Nordic hamstring exercise by increasing serial sarcomere number, effectively allowing the muscle to reach greater lengths without overstretching its individual functional units.
Credit
Dr. Max Andrews from The University of Queensland Image Source Link: https://doi.org/10.1016/j.jshs.2026.101134
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CC BY-NC-ND