Aim: The aim of study was to find out the efficacy of swiss ball exercises versus floor exercises in mechanical low back pain patients. Methodology: The number of subjects was 30 (n=30) with both males and females and randomly divided into 2 groups (group A & group B). Intervention: Both the experimental groups (group A & group B) received a moist heat pack prior to the treatment with ergonomics care and strengthening exercises one group on swiss ball and another on floor for 4 weeks (3 days/week). Outcome measures: The pre & post readings of outcome measures Visual Analogue Scale (VAS), Oswestry Disabilty Index (ODI), Dynamic Extension Endurance Test (DEET), Dynamic Abdominal Endurance Test (DAET) & Multifidus Test (MT) was taken to find out the improvement in both the groups. Result: Comparison of values of both the groups showed a highly significant improvement in low back pain, endurance and decreasing in disability but there is no significant difference between both the groups. Conclusion: It is concluded that both the exercises (Swiss ball & Floor) are equally effective in reduction of low back pain, disability and increasing endurance.

Keywords: Mechanical Low Back Pain; Visual Analogue Scale (VAS); Oswestry Disability Index (ODI); Dynamic Abdominal Endurance Test (DAET); Dynamic Extension Endurance Test (DEET); Multifidus Test (MT).