| Abstract: |
Purpose: Despite the high incidence of hamstring strain injuries in several
popular sports, definitive research on their causation and prevention is
limited. Studies show fatigue and also hamstring eccentric weakness as causes
for hamstring injuries. It begs the question “which way may be the best to
train hamstrings to prevent injury. Methods: Eccentric hamstring peak torque
and angle of peak torque toque were measured using the Kin Com dynamometer at
60˚s-1/s (type, 125 AP, Chattanooga, TN, USA) before and after a modified
L.I.S.T fatigue protocol. Participants were divided into two groups and
underwent four weeks of eccentric hamstring training, then retested. The
strength group used Nordic Hamstring Curls and the endurance group used
Assisted Nordic Hamstring Curls. Results: The results showed a significant
difference in peak torque in both groups (strength- .00, Endurance- .01). Both
groups did not show a significant difference in angle of peak torque, however
the results showed an increase to longer muscle lengths of 18.28% and 26.95%
for endurance and strength groups respectively Conclusions: The strength
training intervention shows the greatest improvement on both peak torque and
angle of peak torque. |