with regard to the incline gait task, the older adults demonstrated post in comparison to pre-intervention a lower magnitude of the external knee adduction joint movement in the initial and mid parts of the support phase. Furthermore, the older adults examined showed an approximately 20% reduction in the external knee adduction angular impulse during the stance phase post-intervention. In the literature. the external adduction moment and angular impulse at the knee has been noted for its potential role in the initiation and progression of medial compartment knee OA in the elderly .Amin and Miyazaki for example, showed that greater adduction moment at the knee during locomotion contributes to the development of future chronic knee pain and is a valid predictor of radiographic disease progression in the medial compartment in the elderly. The current significant difference in the external knee adduction moment and knee adduction impulse was further analyzed in terms of effect size, which was concluded to be practically relevant (Cohen's d from 0.7 to 1.0). The identified changes in ambulatory knee joint mechanics and MTU mechanical properties, therefore, suggest that the examined older adults showed post 14 week exercise intervention, enhanced leg-extensor