Objective: Objective of this experimental study was to compare the Q angle among females with or without isometric contraction in standing and supine position in both right and left leg. Materials &Methods: Study Design: Explorative study design; Sampling Technique: Simple random sampling; Sample Size: 50 participants were included in the study with the age group of 18-30 years; Measurement of Q angle: The right and left sided Q angles were measured with subjects barefooted and in both standing and supine position. Q angle were measured using the universal goniometer; Statstics: Data was analyzed using SPSS software 20.0 version and Z test was used to compare the outcome measure

Results: Result of present study showed that there was a significant difference in comparing Q angle with or without contraction of quadriceps in lying and erect body positions but Q angle was more in standing position as compared to supine position and Q angle decreases with the isometric contraction of quadriceps in both body positions. When we compared bilateral variability in standing and supine position result was non-significant.

Conclusion: The present study concluded that there was Q angle decrement with static quadriceps contraction in both standing and supine positions but there was no significant bilateral variability.