Group A will recieve standard treatment of post facilitation stretching and strengthening.

Strengthening will be divided into following phases

1. Warm up phase:
2. Strengthening phase:
3. Cool down phase:

Group B will receive surface EMG biofeedback(visual and auditary) in addition to standard treatment.

Group C will receive 3 types of feedbacks (electrical, visual and auditory) in addition to standard treatment

All participants will receive 4 weeks of intervention with a frequency of 3 times/week i.e. 10minutes of hot pack followed by post facilitation stretching and strengthening protocol.

The exercise protocol will be taught to the patient by an experienced physiotherapist and supervised on the subsequent sessions. The protocol will be gradually progressed as per the patient's tolerance.

It will be measured using a mobile application. One sensor will be placed at the T12-L1 and other at L5-S1 spinous processes. The two angles will be recorded and their sum will be considered as the lumber lordotic angle.

One sensor will be placed at T12-L1 and the other placed at L5-S1 simultaneously. Patient will be asked to flex and then extend maximally; his end ranges will be recorded. Within the middle range, therapist will decide the targeted angle for individualized patient. Patient will be asked to memorize the target position for 5seconds. The absolute error will measure by subtracting the actual angle and the target angle.

It will be measured on a numeric pain rating scale in which the subjects select a number ranging from 0-10 according to their intensity of pain. '0' score indicates no pain while '10' indicates worst pain experienced.

It will be measured using a Modified Oswestry lower back Disability Index. It is a 10item based questionnaire and each item is further divided into 6statements. The score of '0-4' indicated no disability while 35-50 indicate complete disability.