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Background and Aim: In today sports such as volleyball and basketball, Vertical Jump is considered as important component that enhance the performance of athlete. The aim of this study was to determine the effect of muscle energy technique on vertical jump performance in volleyball and basketball players. Methodology: This Randomized Clinical Trial was conducted at Islamic International University Islamabad. Twenty-nine athletes of age 18 – 35 playing basketball and volley as part time/domestic level were included. Post isometric relaxation technique was applied on group A (n=15) and static stretching was applied on group B (n=14). Surface electromyography activity of quadriceps and abdominal muscle was recorded, Stable time, airtime and vertical jump height were measured using two-axis force platform and vertical jump height was measured by motion sensor. Measurements were taken at baseline and immediately after applying interventions to both groups. Data entry and analysis were done by using software SPSS version 22. Results: Of the 29 athletes, 15 were in the group A and 14 were in the group B. Immediate assessment of vertical jump height was not significantly improved by post-isometric relaxation relative to static stretching (p=0.594). Muscle recruitment, ground reaction and vertical jump height improved apparently after post isometric relaxation but not significantly. Conclusion: It appears that post isometric relaxation and static stretching of quadriceps shows no significant difference in vertical jump height.

Background and Aim: Hemiplegic cerebral palsy children presented with wide variations of lower limb kinematics. The normal limb in children with spastic hemiplegic cerebral palsy shows variations in Q angle. So, this study aimed to determine the different values of Q angle from both legs among hemiplegic cerebral palsy children having age between the 7 to 12 years. Methodology: An observational cross-sectional study was conducted by using non-probability convenience sampling technique. 71 diagnosed cases with unilateral cerebral palsy in Mobility Quest clinic Lahore and Children Hospital Lahore were enrolled in the study during the duration of six months from September 2019 to March 2020. The consent was taken from those subjects who fulfill the inclusion criteria (n=71) and assessed by the Goniometer that is used to measure the Q angle in hemiplegic Cerebral palsy. Data entry and analysis was done by using SPSS version 25. Descriptive measures of mean and standard deviation were used to summarize data collection. Results: The study included 71 children diagnosed with unilateral cerebral palsy. The Mean Q angle for hemiplegic CP children in right leg is 14.65 ± 2.8 (Normal Range: 11.71-16.98) and in left leg it is 15.09 ± 3.4(Normal Range: 11.47 -18.33) but it differs with the distribution pattern of hemiplegia. Out of 71 children 39 kids were experienced with right sided weakness while 32 were with left sided weakness. Conclusion: Mean Q angles are higher in the affected leg as compared with the unaffected leg in hemiplegic CP. Q angle increase with age and more in female subjects as compared to male subjects.