The Nordic hamstring curl (NHC) is an exercise in which a person kneels with their feet fixed in position and lowers their body by extending the knee. It reduces hamstring injuries in athletes, and is commonly used as a form of injury prevention.[1][2] NHC increases strength of the hamstrings and length of the fascia,[3][4][5] sprint speed, and change of direction ability.[6] It is debated whether NHC is an open or closed chain exercise.[7] NHC has been compared to the razor hamstring curl.[5][4]
^Mjolsnes, Roald; Arnason, Arni; osthagen, Tor; Raastad, Truls; Bahr, Roald (2004). "A 10-week randomized trial comparing eccentric vs. concentric hamstring strength training in well-trained soccer players". Scandinavian Journal of Medicine and Science in Sports. 14 (5): 311–317. doi:10.1046/j.1600-0838.2003.367.x. PMID15387805. S2CID26691609.
^ abPollard, C.; Opar, D.; Williams, M.; Bourne, M.; Timmins, R. (2018). "Does intensity matter when using the Nordic hamstring exercise to improve strength and fascicle length? Or is the Razor hamstring curl a suitable alternative?". Journal of Science and Medicine in Sport. 21: S34. doi:10.1016/j.jsams.2018.09.078. S2CID80723914.