Aim: Immediate effect of Post-Isometric Relaxation (PIR) V/S Reciprocal Inhibition (RI) on tendoachilles tightness. Background: Tendoachilles tightness affects its efficiency thus restricting ankle dorsiflexion in normal individuals. Muscle Energy Techniques is a method for soft tissues involving isometric and/or isotonic contractions of a muscle i.e. using a muscle’s own energy for best results. Thus MET is known to play a vital role in improving muscle tightness. Also very scarce literature is present on the effect of MET for increasing ankle dorsiflexion by improving tendoachilles tightness. Methodology: Randomized clinical trial 60 subjects between 18-30 years of age were included and randomly divided into 2 groups of PIR and RI. Each group consisted of 30 subjects. Tendoachilles tightness was assessed using squat screening test. Ankle dorsiflexion range was measured using a universal full scale goniometer pre and post-intervention. Results: There was significant improvement in tendoachilles flexibility in both PIR and RI groups. Statistically when compared PIR showed greater improvement than RI. Conclusions: PIR and RI were both found to be effective in improving tendoachilles tightness, but PIR was more effective than RI.
