DISCUSSION ON STATISTICAL ANALYSIS AND RESULTS; Statistical analysis, two independent sample tests compare the mean of the randomized case-control group. To find the significant difference between the two groups, the data collections are mean values, so t-test is the appropriate test to compare the mean value of the two groups in normal distributed data (Menz, 2004). The t-test result shows a significant p-value of body mass index 0.005 lower than 0.05 and the mean value of BMI in the case group higher than that in the control group. The null hypothesis rejected, there is a significant difference in the two groups in terms of body mass index. The foot posture index shows a p value of 0.004 less than 0.05 and again the average value of FPI in the case group higher than the control group. Also in this case the null hypotheses are rejected and show the significant difference between the two groups. Two independent samples t-tests show a larger significant difference, it indicates that two groups account for a difference in body mass and foot mass index. This supports the hypotheses tested by the researcher. Participants with chronic plantar heel pain should differ from the control group in terms of obesity and pronated foot to confirm that these two factors may be the risk factor for chronic plantar heel pain. The standing heel raise test shows a p-value of 0.050 greater than 0.05. the null hypothesis is accepted and there is no significant difference between the two groups regarding this test and shows the negativity of the hypothesis tested. The standing heel test indicates the endurance of the calf muscle, the test result shows that there is no difference in the calf muscle strength between the two groups. The research focused on data based on the limb most affected by pain but in the measured result...... middle of paper ......te the foot is pronated. The author justifies that the pronated foot will increase dorsiflexion. There is no linear relationship found between ankle dorsiflexion and chronic heel pain. This correlates foot posture and dorsiflexion range of motion, but in the chi-square test it shows the independence of the two variables. As a previous study found the association between ankle dorsiflexion and tension on the plantar fascia, the author determines that research requires finding an association with increased translation of the tibia stressing the plantar fascia. A randomized case-control study cannot be considered causal, the authors explain that the precision of the case analysis was low because more variables could be included. The authors suggest further research to determine other hypothesized causal factors in case accuracy. The author had no competing interests..