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Background and Objective: The shoulder joint is continuously under various pressures. Shoulder impingement syndrome is the most common problem. Stability of the shoulder is due to the interaction between static and dynamic stability which is caused through mediation of sensorimotor system (proprioception). This study was investigated to determine the effect of 6 weeks resistance training with elastic-band on proprioception in male athletes with shoulder impingement syndrome. Method: In this quasi-experimental study, 30 adult males with shoulder syndrome divided into control and interventional groups. Subjects in interventional group were received resistance exercises with elastic-band for six weeks. The shoulder joint proprioception, perior and at the end of study in 0, 45 and 90 angle were measured using isokinetic, Biodex System 3. Results: Significant improvement in the shoulder joint proprioception in 0, 45 and 90 angle were observed in interventional group in comparision with controls (P<0.05). Conclusion: Six weeks of resistance training with elastic-band improved shoulder joint proprioception of males with impingement syndrome.

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Background and Objective: There are relations between rate of loading, osteoarthritis and genu varum result in osteoarthritis. This study was done to compare the peak vertical ground reaction forces and the rate of loading during single leg drop landing between men with genu varum deformity and normal knee from three heights. Methods: This quasi-experimental studywas carried out on 20 male students with genu varum deformity and 20 male students with normal knee. Genu varum deformity was measured and recorded by collis and goniometer. Subjects performed single-leg landing dropping from three heights (20, 40, 60 Centimeter) on a force platform. Results: The peak vertical ground reaction force in calcaneus contact and the rate of loading between groups significantly were different (P<0.05). No significant difference was found in the peak vertical ground reaction during toe contact. Conclusion: Frontal knee angle affect on loading rate. Maybe one of the reasons for higher injury risk and knee arthritis in genu varum population might be due to higher ground reaction forces and the rate of high loading.