Parth Mehta , G. ., Babu K., V. . ., Akshata and Kumar N., S. . . . (2015) “COMBINED EFFECT OF PNF STRETCHING WITH CHEST MOBILITY EXERCISES ON CHEST EXPANSION AND PULMONARY FUNCTIONS FOR ELDERLY”, International Journal of Physiotherapy, 2(3), pp. 563–671. doi: 10.15621/ijphy/2015/v2i3/67032.