To observe the effects of isotonic and isometric exercises with conservative therapy on core muscle in patients with low back pain.

Twenty participants, 10 male and 10 female aged between 30 and 50 years suffering from low back pain were taken. Sample was divided into two groups, group A isometric exercises and group B isotonic exercises, both the group received conservative therapy of transcutaneous electrical neuromuscular stimulation and hot pack. Outcomes measure Visual Analog Scale (VAS) and Modified Oswestry Disability Index (MODI) were used the pre-treatment and at the end of 4 weeks.

There was no significant differences for the demographic data between the groups. Both group were comparable in term of age, height, weight, and BMI. Intergroup analysis of VAS score was done using Mann–Whitney test. Pre interventional analysis showed no significant differences between group A and group B (P=0.6469) and also post-intervention analysis showed no significant difference between group A and group B (P=0.3525). Analysis of MODI score was done using Mann–Whitney test, there was significant difference between group A (mean=9.90, SD=5.87) and group B (mean=19.39, SD=7.27) in their posttest measurements (P=0.002). Experiment of results showed isotonic and isometric exercises were effective in all measured variables (pain intensity and functional disability) in treatment of patients with low back pain.

There was no difference between the use isotonic and isometric in decrease pain intensity, but there were significant differences in improvement functional disability where isometric exercises allow a greater improvement in functional disability than isotonic in low back pain.