Role of Post-Isometric Relaxation of Quadriceps and Core Stability Exercises in Vertical Jump Performance

Objective: To determine the role of post isometric relaxation of quadriceps and core stability exercises in vertical jump performance. Methods: A Randomized Clinical Trial, conducted in Islamic International University after having the ethical permission from Institutional review Board of Riphah International University Islamabad. Sampling technique was Non-probability convenience sampling with the sample size of 30 athletes, that were divided by sealed and envelop method into core stability exercise treated group (n=17) and Post isometric relaxation treated group (n= 13). Male Athletes within age range of 20-35 years and playing at the domestic level were included and athletes with history of sprain or strain in lower limbs within last 6 month, having neuromusculoskeletal and cardiovascular pathology were excluded from the study. Force plate was used to measure the different parameters of jump. Data were entered and analyzed through SPSS version 22. Results: The mean age of group A and B was 20.35 + 2.01 and 20.03 + 2.42 in years respectively. BMI of core stability exercise treated group and Post isometric relaxation treated group was 22.35 + 2.32, 22.58 + 1.95 respectively in kg/m2. Comparison between core stability exercise treated group and Post isometric relaxation treated group showed that there was no significant immediate effects (F= 1.235; p= 0.852) of treatment on three style of jumps. Conclusion: No significant immediate effects of treatment on three styles of jumps was found.