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Browse 47,334 clinical trials for rheumatoid arthritis. Find studies that match your criteria and connect with research centers.
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NCT07384754
The goal of this clinical trial is to learn whether different foot-strengthening strategies can improve foot strength, balance, walking ability, and fall-related outcomes in middle-aged and older adults (ages 45-85 years). The main questions it aims to answer are: * Does foot strength change from baseline after an 8-week foot-strengthening intervention? * Do balance, gait, and physical function improve following different foot-strengthening approaches? Researchers will compare minimalist footwear use, a foot exercise program, a foot-strengthening device (ToePro), and no intervention to see if these interventions lead to greater improvements in foot strength, balance, gait, and fall-related outcomes than no intervention. Participants will: * Complete baseline and post-intervention laboratory testing of foot strength, balance, physical function, and walking gait * Perform foot strengthening exercises or wear minimalist footwear (if applicable) five days/week for eight weeks * Complete daily logs to record intervention compliance
NCT07335614
The goal of this clinical trial is to evaluate the effect of protein loading on the measurement of renal reserve using the MediBeacon Transdermal glomerular filtration rate (tGFR) system. Adults with estimated glomerular filtration rate (eGFR) \>30 ml/min/1.73 m\^2 will be recruited to join the study. This is a potential new use for the tGFR for the assessment of renal reserve. Renal reserve is the increase in GFR that occurs in response to various stimuli, such as when one kidney is removed. The remaining kidney will often show an increase in GFR to compensate. Renal reserve is typically measured after a high protein meal and requires a reproducible stimulus and a repeated measurement of GFR. The main questions it aims to answer are: * To characterize the effect of protein loading on GFR (dose response curve) as assessed by the MediBeacon Transdermal GFR System * To determine Renal Reserve in participants with chronic kidney disease (CKD) using the MediBeacon Transdermal GFR System * To demonstrate whether any change in GFR following the protein stimulus is associated with a change in cardiac output using non-invasive bioimpedance (NICaS) Participants will participate in a Screening visit that will take place within 28 days of the scheduled administration of Lumitrace. On dosing day, participants will have the tGFR reusable sensor with disposable adhesive ring placed on their chest, and the MediBeacon Transdermal GFR System initiated to collect background fluorescence. Following an injection of Lumitrace and the initiation of GFR assessments, participants will ingest a high protein meal over 15-20 minutes. They will be followed at the study center for up to 6-8 hours following administration of Lumitrace. All participants will participate in a follow-up phone call approximately 7 days after the last exposure to Lumitrace. Researchers will analyze the results to see if there is a detectable difference in fluorescence clearance rate following the high protein meal.