[1]. Russell T. Nelson A comparison of the immediate effects of eccentric training vs static stretch on hamstring flexibility in high school and college athletes 2006; 1(2):56-61
[2]. Amit Kumar singh, Sibbala Nagaraj, Rakesh Man Palikhe and Bikram Neupane Neurodynamic slididng versus PNF stretching on hamstring flexibility in collegiate students: A comparative study 2017;4(1):29-33
[3]. Emililo J Puentedura, Peter A Hujibregts, Shelley Celeste , Dale Edwarsd, Alastair In, Merrill R Landers, Cesar Fernandez-de-Ias- Penas 2011 Physical therapy in sports 12(3) , 122-126Immediate effect of quantified hamstring stretching: hold relax proprioceptive neuromuscular facilitation versus static stretching
[4]. Bandy wb, irion JM, briggler M. The effect of time and frequency of static stretching on flexibility of hamstring muscles.phys ther.1997; 77:1090-1096(PubMed)
[5]. Jeffrey Forman,, Lisbeth Geertsen, MS,cmt, Michale E Rogers Effect of deep stripping massage alone or with eccentric resistance on hamstring length and strength. 2013 ,1-6.