The relationship between the frequency content of ground reaction forces in people with peroneitis while walking is one of the fields of interest for researchers. Therefore, the aim of the present study was to investigate the training protocol in water and the thera-band on the frequency spectrum of ground reaction forces in people with pronate during walking.

The present study was a clinical trial study that was conducted in a semi-experimental and laboratory manner. The statistical sample of the present study included 45 students of Mohaghegh Ardabili University, Ardabil, Iran, who had pronate and were selected purposefully and were placed randomly and equally in the three groups of thera-band, exercise in water, and control. Multivariate analysis of variance test was used to compare between groups. The significance level was considered as (P<0.05).

The results indicated that there was a significant increase in the frequency component with a power of 99.5% in the internal-external direction during the post-test compared to the pre-test (P=0.001). The results of the follow-up test showed that the frequency with a power of 99.5% in the internal-external direction during the post-test compared to the pre-test increased significantly, , for the groups of training in water, and the thera-band (Ps equal to 0.004 and 0.001, respectively). Based on paired t-test, the interactive effect of time-group on frequency with 99.5% power of ground reaction force in the anterior-posterior direction decreased by %22.19 (P=0.049). Also, in the vertical direction, the effect of the time factor on the mean frequency during the post-test was significant compared to the pre-test (P=0.044).

According to the results from the above research, it can be said that training in water and thera-band may probably be useful for improving balance and reducing walking fluctuations in people with pronate.