Clinical Research Directory
Browse clinical research sites, groups, and studies.
4 clinical studies listed.
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Tundra lists 4 Health Adults clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07460687
Westlake Frequent-sampling Cohort
This intensive longitudinal study investigates the day-to-day stability and natural fluctuations of the gut microbiome in healthy adults over a 15-day period. While the human gut microbiome is a complex ecosystem, its baseline stability in the absence of disease or medical intervention remains insufficiently characterized due to low sampling frequency in prior research. By recruiting healthy volunteers for continuous daily sampling, this study aims to map temporal community structures and evaluate the stability of core microbiota. Additionally, the research utilizes Continuous Glucose Monitoring (CGM) to explore the potential relationships between microbiome dynamics, daily dietary intake, and host glycemic stability.
Gender: All
Ages: 18 Years - 40 Years
Updated: 2026-03-10
1 state
NCT07179848
Safety and Feasibility of Temporal Interference Brain Stimulation for Treatment in Psychiatric Disorders
The goal of this clinical trial is to validate if temporal interference brain stimulation (TIBS) is safe in healthy volunteers aged 20 to 65. The main questions it aims to answer are: * Is it safe to apply TIBS intervention to the left hippocampus in healthy participants? * Is it safe to apply TIBS intervention to the left insula in healthy participants? * Is it safe to apply TIBS intervention to the left anterior cingulate cortex in healthy participants? * Is it safe to apply TIBS intervention to the right inferior frontal cortex in healthy participants? Participants will: * Be Randomly allocated to either sham-first group or treat first-group, stratified by stimulated brain region, following a crossover-controlled experimental design * Complete baseline cognitive evaluations and mental status assessments, and undergo a baseline MRI scan on the same day * Receive stimulation for 5 consecutive days, followed by a 2-days washout period, then complete the remaining 5 days of stimulation. * Complete post-intervention cognitive evaluations and mental status assessments, and undergo a post-intervention MRI scan on the same day
Gender: All
Ages: 20 Years - 65 Years
Updated: 2026-02-09
NCT07260318
Acute Effects of Cricket Fast Bowling on Bone Turnover and Signaling Markers
The goal of this study is to investigate the acute effects of cricket fast bowling on the bone turnover and signaling markers in healthy young males. The main question aims to answer: • Does a single bout acute fast bowling change serum C-terminal telopeptide of type I collagen (CTX-I) and other bone turnover and signaling markers levels? Participants complete both the bowling and control trials, with a minimum washout period of one week between trials. During each trial, blood samples are collected at three time points: pre-, immediately post, and 2-hour post bowling/rest.
Gender: MALE
Ages: 18 Years - 30 Years
Updated: 2025-12-03
1 state
NCT07245225
Acute Effects of High Impact Exercise on Bone Metabolism
The goal of this study is to investigate the acute effects of drop-landing exercise on the bone metabolism biomarkers and extracellular vesicles in healthy young males, in order to gain a deeper understanding of the mechanotransduction mechanisms involved in bone metabolism. The main question aims to answer: • Does a single bout acute drop-landing exercise change serum sclerostin, other bone signaling markers, and circulating extracellular vesicles levels? Participants complete both the drop-landing and control trials in a randomized order, with a minimum washout period of one week between trials. During each trial, blood samples are collected at three time points: pre-, immediately post, and 1-hour post drop-landing/control exercise.
Gender: MALE
Ages: 18 Years - 35 Years
Updated: 2025-11-24
1 state