Clinical Research Directory

Group Exercise Program Supported By Audiovisual Media During Hemodialysis

People with chronic kidney disease (CKD) undergoing hemodialysis (HD) experience muscular complications, such as sarcopenia, which worsen their functional capacity and increase mortality. Exercise programs during HD are an effective strategy to combat sedentary behavior, and implementing them through innovative technologies could facilitate their adoption in clinics, benefiting more patients. Therefore, the study's objectives are to assess the feasibility and safety of a group exercise program supported by audiovisual media conducted during HD sessions. Additionally, it will analyze factors influencing adherence, identify potential causes for interruptions or failure to perform the prescribed exercise, and evaluate the risk and prevalence of sarcopenia, its association with low muscle strength, poor muscle quality, and physical inactivity.

Acute Mental Fatigue and Muscle Strength

This study will investigate the acute effects of mental fatigue on lower-extremity muscle strength and limb symmetry in healthy young adults. Participants will complete lower-extremity strength testing before and after a standardized computer-based mental fatigue protocol involving tasks of attention, reaction time, concentration, and working memory. Muscle strength and limb symmetry will be assessed using isokinetic dynamometry, with muscle activity measured using surface electromyography. Participants will also complete subjective measures of mental fatigue, sleepiness, mental effort, and perceived physical exertion. Heart rate will be monitored throughout the study, and brain activity may be assessed during cognitive tasks. The study will determine whether acute mental fatigue is associated with changes in muscle strength, limb symmetry, and neuromuscular performance.