Document Type: Original Article
Department of Physical Therapy, Faculty of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
Baqiyatallah Research Center for gastroenterology and Liver Diseases (BRCGL), Baqiyatallah University of Medical Sciences, Tehran, Iran
Department of Epidemiology and Biostatistics, Faculty of Health, Baqiyatallah University of Medical Sciences, Tehran, Iran
Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Background: For decades, static stretching has been the standard benchmark for training programs, because it has been shown to increase flexibility compared with other methods of stretching.
Objective: The current study investigated and compared the effects of active dynamic stretching and passive static stretching on hamstring tightness.
Methods: For this experiment, 64 female students were enrolled and randomly assigned to active dynamic or passive static stretching groups (n = 32 each). The first and second experimental groups were trained with repetitive dynamic stretching and static stretching exercises, respectively. Exercises were performed 10 times per limb, 3 times per day, 5 days per week for 4 weeks. Hamstring muscle length measurements were repeated in weeks 2 and 4. Statistical analysis of the results was performed by t-test and repeated measures ANOVA using SPSS 15.
Results: Both experimental groups showed significant improvements in the active knee extension range of motion during the intervention (P < 0.001). However, active stretching showed better results and had a greater effect on range of motion in comparison with static stretching.
Conclusion: Active dynamic training can be considered a suitable method for increasing the flexibility of the hamstring muscle and, consequently, reducing the complications and problems associated with hamstring tightness.