<qa>  What is the mean and standard error of the difference between changes of KD group and PCDNext steps: An important reason for conducting this pilot study is to evaluate the feasibility and determine initial data for the primary outcomes, in order to perform a sample size calculation for a larger trial. The mean and the standard error of the difference between the changes of KD group and PCD group will be used for the sample size calculation to reach an 80 power. In addition, the study protocol, data collection questionnaires, randomization procedure, recruitment and consent, and acceptability of intervention will be evaluated. Findings and the testedimproved protocol of this study will support an R21R01 mechanism i.e., PAR-15-280PAR-15-282: Multidisciplinary Studies of HIV and Aging that will include and expand upon following specific aim and hypotheses: 