Plyometric Training in Volleyball Players With Chronic Knee Pain

Study Overview
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Brief Summary
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The study is randomized and single-blinded. Ethical approval is taken from ethical committee of Riphah Internatinal University, Lahore. Participants who meet the inclusion criteria will be enrolled and allocated in group A & B through random number generator by Non-probability Convenient random sampling technique. Subjects in Group A will receive plyometric training. Group B will receive general training.

Detailed Description
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The objective of the study is to determine the effects of plyometric training on vertical jumps and dynamic stability in volleyball players with chronic knee pain. The study is randomized and single-blinded. Ethical approval is taken from ethical committee of Riphah Internatinal University, Lahore. Participants who meet the inclusion criteria will be enrolled and allocated in group A & B through random number generator by Non-probability Convenient random sampling technique. Subjects in Group A will receive plyometric training. Group B will receive general training. The outcome measures will be assessed by Vertical jump test, Hop test and Y balance test The data will be analyzed by SPSS, version 25. Statistical significance is P= 0.05.

Official Title
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Effects of Plyometric Training on Vertical Jump and Dynamic Stability in Volleyball Players With Chronic Knee Pain

Conditions
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Chronic Knee Pain

Intervention / Treatment
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* Other: Plyometric training
* Other: General exercises


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Both genders. Age between 15 to 30 years ACR criteria for knee OA. BMI less than 30 Exclusion Criteria: Players with open wounds. Players with diabetes. Grade IV OA on kellergan Lawrence. Any traumatic condition that can hinder polymetric training. Ankle instability sprain/ strain.

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Plyometric training<br>Jumps in place. Standing jumps. Multiple hops and jumps. Box drills. Depth jumps. | Other: Plyometric training<br>* Jumps in place. Some examples include multiple vertical jumps while reaching an overhead object, squat jump, pike jump, or tuck jump. Standing jumps. Examples include the single leg jump, maximal vertical jump ,standing long jump or lateral long jump. Multiple hops and jumps. Examples would include multiple long jumps or cone hops performed in succession, such as 5 hops in a row Box drills. Examples of these drills include box jumps ,repeated box jumps, and single leg box jumps. Depth jumps. Examples include stepping off the box and landing, stepping off the box and jumping vertically immediately after landing, or stepping off the box, landing, and sprinting.<br>|
| Active Comparator: General exercises<br>Dumbbell Squat, Dumbbell Alternating Bench Press, Straight Arm Pulldowns, Dumbbell Front Raises, Reverse Flyes, Overhead Tricep Extensions, Dumbbell Bicep Curls, Jackknife Crunches, Oblique Crunches, External Rotation | Other: General exercises<br>* Dumbbell Squat: 3 sets of 15 reps, Dumbbell Alternating Bench Press: 3 sets of 15 reps, Straight Arm Pulldowns: 3 sets of 15 reps, Dumbbell Front Raises: 3 sets of 15 reps, Reverse Flyes: 3 sets of 15 reps, Overhead Tricep Extensions: 3 sets of 15 reps, Dumbbell Bicep Curls: 3 sets of 15 reps, Jackknife Crunches: 3 sets of 20 reps, Oblique Crunches: 3 sets of 20 reps, External Rotation: 3 sets of 15 reps<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Vertical Jump Test | The Vertical Jump test is designed to measure an athlete's lower body strength | 4 weeks | 
| Hop Test | In this test, the aim is to jump as far as possible on a single leg, without losing balance and landing firmly. | 4 weeks | 
| Y Balance Test | This is a portion of the Functional Movement Systems screen used to evaluate dynamic balance and functional symmetry in order to determine a person's risk for injury or return to sport readiness. | 4 weeks |