Background: Human Immunodeficiency Virus (HIV) infection has been known to impact both motor and cognitive systems and cause motor and cognitive alterations (MCAs). Transcranial direct current stimulation (tDCS), mainly when applied to the prefrontal cortex, has shown promising results in improving gait, balance, and executive functions in individuals with HIV. Previous studies suggest that integrating a task designed to stimulate higher cognitive centers in combination with tDCS could potentially enhance these effects. Purpose: The objective of this study was to investigate whether the combination of tDCS with a tracking task, when applied to the prefrontal cortex, effectively enhances reaction time and HIV dementia scale (HDS) scores (motor-cognitive) components in individuals living with HIV. Methods: The study involved nine female and one male participants living with HIV, with an average age of 58.9 ± 4.3 years. To assess the impact of tDCS on RT and motor cognition, each participant was evaluated both before and after the administration of tDCS with the HDS. Participants' primary goal for the reaction time components was to respond quickly and accurately to color changes by tapping the pod that lit up green. This task was performed while applying tDCS to the prefrontal cortex, allowing researchers to focus simultaneously on cognitive reaction speeds and the physical effects of neuromodulation. Results: Upon analysis, significant differences were noted between pre and post-tDCS of the HDS scores. The data further revealed substantial improvements in reaction time, hits, and strikes after the tDCS application. Conclusion: The results of this study demonstrated that tDCS can potentially improve neurocognitive and motor function in individuals with HIV. However, the study recommends that tDCS treatments be applied over a more extended period than in this study.

The purpose of this study is to explore the relationship between service quality and customer satisfaction at fitness facilities. This type of research is quantitative with a correlation method, sample selection using accidental sampling consisting of: 1) 64 respondents who train at the gym, 2) 114 respondents who train at a fitness studio (type of training: training zumba, pilates, yoga, calisthenics, poundfit, TRX, body combat), 3) 82 respondents who train at a swimming pool or sports field (type of training: soccer, fun football, futsal, badminton, basketball, tennis). The questionnaire on the indicators in Service Quality is Tangibility, Reliability, Responsiveness, Assurance, Empathy, then the indicators in Satisfaction are Complaints and Suggestions System, Comfort and Safety, Communication. The results of this study are that Service Quality has a positive effect on Satisfaction 0.000, then the correlation value is 1) facilities in the gym r = 0.636, 2) facilities in the fitness studio r = 0.687, 3) facilities in the swimming pool or sports field r = 0.504. The conclusion of this study confirms the importance of service quality in improving customer satisfaction in fitness facilities. For further research, it is recommended that the data collection time be extended. Then, broader research with a larger population is also needed to obtain more representative results.