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URL: http://rehabilitationj.uswr.ac.ir/article-1-934-en.html
1, Ali Ashraf Jamshidi2 , Leila Abbasi3 , Saeedeh Seyyed-Mohseni4 , Mohammad Kamali4
2- Department of Physical Therapy, Rehabilitation Research Center, Faculty of Rehabilitation, Tehran University of Medical Sciences, Faculty of Rehabilitation., Tehran University of Medical Sciences, Shahid Shahnazari st., Madar sq., Mirdamad Blvd., Tehran., Iran.
3- School of Rehabilitation Sciences, Shiraz University of Medical Sciences., School of Rehabilitation., Abiverdi Yek., Chamran Blvd., Shiraz., Iran.
4- Rehabilitation Research Center, Faculty of Rehabilitation, Tehran University of Medical Sciences, Faculty of Rehabilitation., Tehran University of Medical Sciences, Shahid Shahnazari st., Madar sq., Mirdamad Blvd., Tehran., Iran.
Objective: In this research the effect of perturbation training on correlation index of detrended fluctuation analysis index (&alpha) of anterior cruciate ligament deficient (ACL) patients was evaluated using nonlinear dynamic methods.
Materials & Methods: The study was done on ten male athletes with at least 6 months elapse after their ACL lesions. Subjects were selected using non-probability sampling technique. Stride time for about 270 gait cycles for each patient was recorded and used for detrended fluctuation analysis.
Results: Analysis showed difference in values of &alpha between primary and shuffled data which indicates a non-trivial trend of data structure. According to the range of &alpha (0.5>&alpha>1), long time correlation between gait cycles was found. Also, the results showed no significant difference on &alpha before and after training (P=0.515).
Conclusion: The results showed persistent patterns in time series which are similar to slow/ speed walking patterns. Also, it can be concluded that, according to their correlation values, ACL deficient patients had a similar behavior to healthy people.
Received: 31/10/2011 | Accepted: 2/04/2012 | Published: 15/10/2015
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