M. Tech. / Purpose: To determine whether there was any improvement in proprioception by influencing the proprioceptive receptors through either manual manipulation of the Sacroiliac joint or subjecting the participants to whole body vibration by means of Powerplate training. A combination of the two was also used. Methods: This study included 45 participants divided into 3 groups of equal size. All participants were symptomatic with regard to Sacroiliac Joint pain and\or restriction and fell within the different activity categories according to the Internat ional Physical Activity Questionnaire. Participants in Group 1 were subjected to Sacroiliac Joint adjustment and Powerplate training, Group 2’s participants were subjected only to Sacroiliac Joint adjustment, and participants in Group 3 were only asked to perform training sessions on the Powerplate. The study design consisted of six consultations with intervention applied at each consultation and objective readings taken at the beginning, after the 3rd intervention and after the last intervention. Objective data was obtained by the Biodex Stability System. The initial effect of the intervention was represented by the initial Biodex Stability System reading compared to the second reading, and the short term effect was represented by the initial reading compared to the Biodex Stability System reading at the end of the six consultations. Results: Objective results from comparing intergroup Biodex Overall Stability Index readings showed that Group 3, the group that received only Powerplate training, had the most significant ef fect (p=0.016). This was followed by Group 1 (Powerplate and Chiropractic Spinal Adjustive therapy) with p=0.098. During intragroup comparison, it was found that the initial treatment , from the first Biodex reading to the second, had the biggest effect (p=0.005). iv Conclusion: Although the group that only received Powerplate training showed a significant effect especially with initial treatment, some effect was also seen at the group that received both Powerplate training and Chiropractic Spinal Adjustive therapy and the group that only received Chiropractic Spinal Adjustive therapy. Although there was an initial worsening of balance between sessions 1 and 2 in the Powerplate group, the overall effect showed an improvement in balance in this Group.