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 neuro-musculoskeletal 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.