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ISSN : 2092-8475(Print)
ISSN : (Online)
Journal of International Academy of Physical Therapy Research Vol.12 No.4 pp.2479-2486

Immediate Effect of Reverse Nordic Hamstring Exercise and Static Stretching on Lumbar Flexibility, and Rectus Femoris Muscle Fascicle Length

Gawoon Lee, PT, MS, Junghyun Choi, PT, Prof., PhD
Department of Physical Therapy, Namseoul University, Cheonan, Republic of Korea


Background: Although rectus femoris (RF) eccentric training and static stretching (SS) have been reported effectively on lumbar flexibility, and muscle architecture, most studies are results using machines and long-term effects. Therefore, we want to investigate the effect of Reverse Nordic Hamstring Exercise (RNHE), a self-eccentric training, by immediately comparing it with SS.
Objectives: To compare the RNHE and SS of RF to show the effects of lumbar flexibility, and fascicle length (FL).
Design: Randomized controlled trial.
Methods: A total of 30 study subjects were randomly allocated into an experimental group(Reverse Nordic Hamstring Exercise) and a control group(Static Stretching). Before and after the intervention, the subject performed fingertip to floor test (FFT) to evaluate the flexibility of the lumbar spine and measured FL through the SONON 300L (Healcerion Inc., Seoul, South Korea).
Results: There was a significant effect on lumbar flexibility within both groups (P<.05), also there were clear results between the two groups (P<.05). FL showed a significant increase in RNHE (P<.05), but not in SS, and there was a no significant difference between the two groups.
Conclusion: RNHE is effective in improving lumbar flexibility, and FL of RF muscle.





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