2092 Aging is characterized by a pronounced decrease in musculoskeletal strength, which ultimately affects the biomechanics of physical-task performance. The purpose of this study was to determine the effects of a weighted vest on knee extensor strength, peak total support moment, and peak hip, knee, and ankle moments during normal walking in older adults. In this study we collected pre and post measurements for seven adults between the ages of 63 and 76 (5 female, 2 male). At each visit, measures of knee strength were obtained using a Kin-Com isokinetic dynomometer. Kinematic data were obtained using a cine camera, and kinetic data were recorded by a Kistler force plate. The exercise intervention consisted of each subject wearing a vest weighing 4-5% of his or her own body weight for eight weeks. Subjects wore their vests for 2-3 hours per day, four days per week. Modest increases in knee extensor strength (+9.34%, left; +12.18%, right) and peak support moment (+1.92%, left; +8.96%, right) were not statistically significant, but may be of clinical importance. The intervention did result in an overall increase in total weekly exercise time (p=0.01), as reported by each subject. The weighted vest provides older individuals with an easy-to-use method of participating in a weight bearing exercise program to improve strength and functional performance. The potential of the vest intervention to change limb dynamics may allow increased gait velocity, improved balance, and consequently, a decreased fall risk. Modifications of the current protocol are necessary to increase the effectiveness of the intervention. Supported by the NIA OAIC: AG10415-04