Effect of Spinal Exercises on H-reflex in subjects with Lumbosacral radiculopathy (L5-S1) Methodology: Single group pre and post design study aimed to recruit 40 subjects with L5-S1 lumbar radiculopathy confirmed by clinical and MRI findings. Subjects underwent H reflex testing, NPRS scoring, sit to stand test at the base line and after three weeks of exercise sessions. Control values were obtained from volunteers with no symptoms. Inter-side comparisons were made in patients with unilateral symptoms. Result: 40 patients have been recruited with unilateral Radiculopathy symptoms and have completed three weeks post exercise testing. Among them none of them had abnormal H reflex at baseline. NPRS score improved significantly in baseline versus post exercise comparison (P0.05). Conclusion: H reflex did not change with multiple sessions of McKenzie repeated spinal exercises in subjects with lumbosacral radiculopathies, But Improvement in with respect to reduction in Numerical pain score and improvement in capability of sit to Stand performance in this study.