5 Clinical Trials for Various Conditions
This study is being done to gather data on whether oral supplementation of CoQ10 is enriched in the blood and muscles in older adults with sarcopenia. This study involves 28 consecutive days of oral CoQ10 supplementation to explore changes in muscle strength, aerobic capacity and physical function with CoQ10 supplementation.
Skeletal muscle metabolic health is critical for mobility and an underrecognized target of metabolic acidosis in chronic kidney disease. Impaired muscle mitochondrial metabolism underlies poor physical endurance increasing the risk of mobility disability. The proposed project will use precise in vivo tools to study the pathophysiology of poor physical endurance in a clinical trial treating metabolic acidosis among persons living with chronic kidney disease.
The overall aim of this pilot study is to investigate the effects of exercise training on skeletal muscle and adipose tissue insulin resistance in subjects with Type 2 Diabetes (T2D).
Skeletal muscle dysfunction (sarcopenia) is an under-recognized target organ complication of CKD with substantial adverse clinical consequences of disability, hospitalization, and death. Sarcopenia in this proposal is defined by impaired metabolism and physical function associated with decreased skeletal muscle mass or function. Skeletal muscle tissue relies on mitochondria to efficiently utilize oxygen to generate ATP. Impaired mitochondrial energetics is a central mechanism of sarcopenia in CKD. The investigators propose a series of studies designed to shed light on the pathophysiology of sarcopenia in persons with CKD not treated with dialysis. Investigators will conduct a randomized-controlled intervention trial of combined resistance training and aerobic exercise vs. health education to assess changes in skeletal muscle mitochondrial function, metabolism and physical function. Investigators hypothesize that exercise improves mitochondrial function and physical function in persons with CKD. If successful, these experiments will identify novel pathophysiologic mechanisms for CKD-associated sarcopenia. The proposed study will provide useful insight into benefits associated with exercise among patients with CKD and investigate mechanisms associated with improved metabolism, muscle function and physical function in population.
Goal: The investigators propose to test the feasibility of giving the supplement coenzyme Q10 (Q10) improves symptoms and subjective health in an aging population. Rationale: Direct empirical evidence has supported benefit of Q10 to many symptoms such as fatigue, muscle pain, and cognition. In addition, Q10 has also been reported to benefit other symptoms including headaches, sleep disturbances, and breathing problems. This provides a strong rationale for testing whether Q10 will have similar benefit to these symptoms in an aging population. Method: 44 aging subjects will participate. The design is a 9 month, randomized, double-blind, placebo-controlled crossover study. Each subject will be "crossed over" between high dose Q10 (300mg), low dose Q10 (100mg), and placebo, receiving each agent for 3 month periods. Neither subjects nor investigators will know which substance each subject is receiving in which phase. Subjects will be randomly assigned to one of six arms. Assessments: Assessments will include feasibility of study, subjective quality of life, energy, and metabolic and lipid panels. Analyses will show whether Q10 led to improvements when compared to placebo; whether higher Q10 doses improved outcomes more than lower doses; and whether people with certain symptoms or characteristics get more benefit than people with other symptoms or characteristics.