Effectiveness of post isometric relaxation versus jack knife technique on flexibility agility and dynamic balance in young healthy individuals with hamstring tightness pre-post experimental study

Effectiveness of post isometric relaxation versus jack knife technique on flexibility, agility and dynamic balance in young healthy individuals with hamstring tightness: pre-post experimental study.

1.1 Need of the study

Different Stretching techniques can be used for preventing tightness of hamstrings and complications associated with it. Since there are less evidence for PIR as well as jack knife individually, while there are no studies comparing the both PIR and jack knife technique hence this is significant to evaluate the effect of it. The purpose of this study is to compare out the effect of PIR and jack knife stretching technique on flexibility, agility and dynamic postural control in asymptomatic individuals with hamstring tightness.

1.2 Objective

1. To study the effectiveness of post isometric relaxation on individuals with asymptomatic hamstring tightness.

2. To study the effectiveness of Jack knife stretching technique on individuals with asymptomatic hamstring tightness.

3. To compare the effect of post isometric relaxation and Jack knife stretching on individuals with asymptomatic hamstring tightness.

1.3 Methodology

1 Study Design: Experimental study

2 Population: Bilateral asymptomatic hamstring tightness

3 Sample : Young healthy individuals aging between 18-25 years both male & female

4 Sampling Technique: Convenient sampling

1.4 Inclusion criteria

• Those who are willing to participate in the study.

• Age group between 18-25 years.

• Both male and female participants will be included.

• Subjects with asymptomatic bilateral hamstring tightness and in category ≤ “average” according YMCA’s normative value for sit and reach test.

1.5 Exclusion criteria

• Subjects unwilling to participate.

• History of any trauma , fractures or other soft tissue injury (past 1 year) of pelvis/hip/knee.

• surgical history of hip or knee in past 1 year.

• Radiating symptoms in the lower limb.

• Past history of any contusion or strain on either quadriceps or hamstring muscle in last 1 year.

• Subject having back pain.

• Subject with presence of any bleeding disorders.

• Inflammatory condition of hip or knee.

1.6 Procedure

The patient will be screened on the basis of inclusion and exclusion criteria and their demographic data will be taken by an assessment Performa. Prior to the commencement of the study, detailed procedure of the study will be explained to the patients and a signed informed consent form will be taken from them. Then the patient will be randomly assigned to a 4-week intervention protocol and allocated randomly to Group A and Group B. The subjects will be allocated to any of the two groups by random allocation using chit method. The therapist will assess for Sit and reach test, star excursion balance test and t agility test before the intervention on the first day of the treatment.

Description of the groups is given below:

Group A = Post isometric relaxation

Group B = Jack knife technique

On the first day of the first week, baseline measurements of sit and reach test, star excursion balance test and t agility test will be taken. Total treatment will be of 4 weeks with 3 sessions per week. Post assessment data of SR test, SEBT , t agility test will be taken at the end of 4 week.