Clinical Research Directory

Radicle Clarity DSTTM: A Study Assessing the Impact of Health and Wellness Products on Mental Clarity and Related Health Outcomes

Radicle Clarity DSTTM: A randomized, double-blind, placebo-controlled direct-to-consumer study assessing the impact of health and wellness products on mental clarity and related health outcomes.

Radicle Revive™: A Study Assessing the Impact of Health and Wellness Products on Menopausal-Related Health Issues Associated Health Outcomes and Related Health Outcomes

Radicle Revive™: A randomized, double-blind, placebo-controlled study assessing the impact of health and wellness products on menopausal-related health issues associated health outcomes.

Radicle Clarity CNM™: A Study Assessing the Impact of Health and Wellness Products on Cognitive Function and Related Health Outcomes Among E-Gamers

Radicle Clarity CNM™: A randomized, double-blind, placebo-controlled direct-to-consumer study assessing the impact of health and wellness products on cognitive function and related health outcomes among E-Gamers.

PACE Cognition Proof-of-Concept Study

This proof-of-concept study will evaluate whether physiologic pacemaker programming improves cognitive function and health status in patients with symptomatic bradycardia who require permanent pacemaker implantation. Participants will be randomized to either standard pacemaker programming at 60 beats per minute or individualized physiologic rate pacing between 60 and 90 beats per minute using the myPACE algorithm. Cognitive function and health status will be assessed before pacemaker implantation and again at the routine 3-month pacemaker clinic visit. The primary outcome is change in Montreal Cognitive Assessment total score. The secondary outcome is change in SF-36 mental component summary score.

Montessori-Based Interventions for Older Adults

The aim of this study is to evaluate the effect of Montessori-based interventions on cognitive function and activities of daily living in older adults.

A Clinical Trial to Evaluate the Effects of a Supplement on Cognitive Function and Energy Levels

This study evaluates the effects of Artah's Cellular Hydration electrolyte supplement on cognitive function and energy levels in healthy adults aged 25-60 who experience mild to moderate fatigue, brain fog, or related symptoms. The trial is a single-arm, unblinded, virtual study in which all 50 participants will use the test product daily for 4 weeks. Participants will complete self-reported questionnaires at Baseline, Week 1, Week 2, Week 3, and Week 4, and will undergo cognitive battery testing at Baseline and Week 4. The primary endpoint is change in cognitive performance scores as measured by a standardized cognitive battery. Secondary endpoints include participants' self-reported perceptions of mental clarity, alertness, mood, physical performance, overall energy levels, and frequency of food cravings.

Effects of Bicarbonate Spring Water Immersion on Cognitive Reliability and Post-Maximal Exercise Recovery in Adolescent Rowers During Altitude Training: A Sex-Stratified Three-Arm Randomized Controlled Trial

This randomized controlled trial aims to investigate the effects of hot spring bath therapy on cognitive function recovery, cerebral hemodynamics, and athletic performance in athletes undergoing altitude training. Participants will be randomly assigned to either a hot spring intervention group, a hot water control group, or a blank control group. The hot spring intervention group receives hot spring baths (38°C, 20 minutes) combined with altitude training; the hot water control group receives hot water baths (38°C, 20 minutes) combined with altitude training; and the blank control group receives standard recovery procedures combined with altitude training. Primary outcome measures include cognitive performance assessments (Stroop test, psychomotor vigilance test) and cerebral hemodynamic indicators (functional near-infrared spectroscopy, transcranial Doppler ultrasound). Secondary outcomes included exercise capacity (maximal oxygen uptake, triathlon performance, 500-meter test), blood lactate, and hematological parameters (white blood cells, neutrophils, platelets). These findings may provide evidence for non-pharmacological interventions to enhance cognitive recovery and brain adaptation during altitude training.

Binaural Beats for Cognitive Function in Older Adults With Mild Cognitive Impairment in Nursing Homes

This study will evaluate whether binaural beats can improve cognitive function in older adults with mild cognitive impairment living in nursing homes. Participants will listen to 10-Hz alpha-frequency binaural beats through headphones once daily for 30 minutes for 14 consecutive days. Cognitive function, sleep quality, anxiety, and depressive symptoms will be assessed before the intervention, after the intervention, and at a 2-week follow-up after the intervention. The study aims to determine whether binaural beats are a safe, simple, and non-drug approach to support cognitive health in older adults with mild cognitive impairment.

Comparative Effects of Kinesthetic Motor Imagery and Dual-Task Training on Balance and Cognitive Function in Young Adults: Randomized Controlled Trial

The goal of this clinical trial is to investigate the effects of kinesthetic motor imagery training and dual-task training on cognitive and motor functions in healthy young people. The main question\[s\] it aims to answer are: * Kinesthetic motor imagery training and dual-task training do not affect cognitive and motor functions in healthy young people. * Kinesthetic motor imagery training and dual-task training affect cognitive and motor functions in healthy youth. * In healthy young people, kinesthetic motor imagery training is more effective on cognitive functions than dual-task training. * In healthy young people, dual task training is more effective on motor functions than kinesthetic motor imagery training. Participants will be divided into 3 groups, taking into account the inclusion and exclusion criteria. Participants in each group will be asked to fill out the sociodemographic form before starting the training. Then, initial assessments were the Motion Image Questionnaire-3 to measure motor imagery ability, and the Box and Block Test for mental stopwatch; Stroop Test to measure cognitive functions; In order to evaluate the dual-task performance, the measurement of the dual-task effect and the Berg Balance scale, which evaluates balance as a motor function, and the Y test, which is frequently used in healthy individuals, will be applied. In the balance exercises group, the participants will do the determined balance exercises 3 days a week for 6 weeks, accompanied by a physiotherapist. In the double-task training group, the participants will perform the cognitive tasks in addition to the determined balance exercises, 3 days a week for 6 weeks, accompanied by a physiotherapist. In kinesthetic motor imagery group, the participants will do the physically determined balance exercises in the first session. Participants will participate in imagery exercises, 3 sessions a week for 6 weeks. Visualization studies will be performed in a quiet environment with the eyes closed, accompanied by a physiotherapist, and whether the participants perform a real motor imagery will be examined by evaluating their autonomic functions. At the end of 6 weeks, initial evaluations will be repeated in all groups. The investigators will compare dual-task training group, kinesthetic motor imagery training group and balance exercises group to see if changes in cognitive and motor function.

Effect of Daily Mixed Spice Consumption on Memory Function

The aging process entails a multitude of structural and functional alterations within the brain, culminating in a gradual and progressive decline in cognitive function. Recent research has indicated that various spices may hold the key to enhancing brain health and combating the effects of aging on cognitive abilities. The hypothesis is that a mixture of spices, acknowledged for their reported memory protection potential, may yield a more potent beneficial effect on memory function than a single spice. The spice mixture will be used at culinary dose, and therefore side effects are anticipated. In this study, the effects of spice mixture will be evaluated, as well as their anti-oxidant, and anti-inflammatory properties. The proposed pilot study will include 50 adults (ages 50-80), exhibiting typical age-related mild cognitive decline, excluding dementia or major neurocognitive disorders. They will be randomized 1:1 assigned into a daily intake of either 4.00 g spice mixture capsules or 4.00 g maltodextrin capsules over 3 months, and explore the sustainable effect over 3 additional months. The changes in symptoms of cognition, fatigue, and mood symptoms of the spice group vs. placebo group will be compared. The outcome of the investigation of the effects of mixed spice consumption will provide important novel information on dietary recommendation of spice to preserve cognitive function in aging population.

Whole-Body Vibration in Parkinson Disease

The aim of this study is to evaluate the effects of different frequencies of Whole Body Vibration (WBV) application on balance, gait, cognitive functions, and dual-task performance in patients with Parkinson's disease. Study Hypotheses: H0.1 - There is no effect of different frequencies of WBV application on balance performance in patients with Parkinson's disease. H1.1 - There is an effect of different frequencies of WBV application on balance performance in patients with Parkinson's disease. H0.2 - There is no effect of different frequencies of WBV application on gait performance in patients with Parkinson's disease. H1.2 - There is an effect of different frequencies of WBV application on gait performance in patients with Parkinson's disease. H0.3 - There is no effect of different frequencies of WBV application on cognitive functions in patients with Parkinson's disease. H1.3 - There is an effect of different frequencies of WBV application on cognitive functions in patients with Parkinson's disease. H0.4 - There is no effect of different frequencies of WBV application on dual-task performance in patients with Parkinson's disease. H1.4 - There is an effect of different frequencies of WBV application on dual-task performance in patients with Parkinson's disease. H0.5 - There is no effect of different frequencies of WBV application on reaction time in patients with Parkinson's disease. H1.5 - There is an effect of different frequencies of WBV application on reaction time in patients with Parkinson's disease. H0.6 - There is no significant difference between medium-frequency and low-frequency WBV in terms of balance performance in patients with Parkinson's disease. H1.6 - There is a significant difference between medium-frequency and low-frequency WBV in terms of balance performance in patients with Parkinson's disease. H0.7 - There is no significant difference between medium-frequency and low-frequency WBV in terms of gait performance in patients with Parkinson's disease. H1.7 - There is a significant difference between medium-frequency and low-frequency WBV in terms of gait performance in patients with Parkinson's disease. H0.8 - There is no significant difference between medium-frequency and low-frequency WBV in terms of cognitive functions in patients with Parkinson's disease. H1.8 - There is a significant difference between medium-frequency and low-frequency WBV in terms of cognitive functions in patients with Parkinson's disease. H0.9 - There is no significant difference between medium-frequency and low-frequency WBV in terms of dual-task performance in patients with Parkinson's disease. H1.9 - There is a significant difference between medium-frequency and low-frequency WBV in terms of dual-task performance in patients with Parkinson's disease. H0.10 - There is no significant difference between medium-frequency and low-frequency WBV in terms of reaction time in patients with Parkinson's disease. H1.10 - There is a significant difference between medium-frequency and low-frequency WBV in terms of reaction time in patients with Parkinson's disease.

A Clinical Trial to Assess the Efficacy of a Single-dose of AlphaWave® L-Theanine on Cognitive Function in Healthy Adults With Moderate Stress

The goal of this clinical trial is to to assess the efficacy AlphaWave® L-Theanine on mental acuity/cognitive function and stress relief in healthy adults with moderate stress. The main question it aims to answer is: Is there a difference in change in mental acuity from pre- to post-dose between AlphaWave® L-Theanine and placebo? Participants will asked to provided a single dose of one capsule of a single dose of one capsule of AlphaWave® L-Theanine or one placebo capsule with 250 ml of room temperature water, and asked to complete tasks to assess cognitive function.

Brain Health in Breast Cancer Survivors

Endocrine therapy (ET) is widely used to treat hormone receptor positive breast cancer and prevent recurrence by downregulating estrogen function. However, ETs readily cross the blood brain barrier and interfere with the action of estrogen in the brain. Estrogen supports cognition and menopausal status is closely linked to cognitive health in women. This has raised concern that anti-estrogen ETs may affect cognition and brain health in breast cancer survivors. However, evidence across existing studies is inconsistent and these effects remain poorly understood. The incomplete understanding of the effects of ET are likely due to limitations of earlier studies - namely, the under-appreciation of the role of menopausal status and insensitivity of standard cognitive measures. This research project will address these earlier limitations by specifically comparing ET effects by menopausal status, and using highly sensitive, task-related functional magnetic resonance imaging (fMRI) measures to assess the effects of ET on brain function.

A Virtual Clinical Trial to Examine the Effect of Magnesium Choline Citrate on Cognitive Function and Anxiety in Healthy Adolescents and Adults

The goal of this clinical trial is to examine the effect of Magnesium Choline Citrate on cognitive function and anxiety in healthy adolescents and adults. The main questions it aims to answer are: * What is the change in cognitive function, as assessed by the PROMIS Cognitive Function- Short Form 8a (≥18 years old) from baseline to Day 84 between Magnesium Choline Citrate and placebo? * What is the change in cognitive function, as assessed by the Pediatric Cognitive Function - Short Form 7a (8 - 17 years old) from baseline to Day 84 between Magnesium Choline Citrate and placebo? Researchers will compare Magnesium Choline Citrate with placebo to evaluate its effects on cognitive function and anxiety symptoms. Participants will be asked to: * Consume either Magnesium Choline Citrate or placebo for 84 days * Complete questionnaires (PROMIS Cognitive Function- Short Form 8a/Pediatric Cognitive Function - Short Form 7a, and PROMIS Emotional Distress - Anxiety - Short Form 8a/Pediatric Anxiety - Short Form 8a) * Complete a study diary weekly

A Clinical Trial to Investigate the Safety and Efficacy of AP-Brain on Cognitive Function at Varying Dosages in Healthy Younger Adults With Self-reported Attention Problems

The goal of this clinical trial is to investigate the safety and efficacy of AP-Brain on cognitive function at varying dosages in healthy younger adults with self-reported attention problems. The main question it aims to answer is what Change from baseline to Day 56 between AP-Brain (1g, 3g, or 5g) and placebo in cognitive function, as assessed by the CNS VS Neurocognitive Index (NCI) score and complex attention. Participants will be asked to consume AP-Brain at 1 g, 3 g, or 5g, or Placebo and asked to complete memory assessment questionnaires.

Effects of New Zealand Blackcurrant Supplementation on Exercise and Cognitive Performance in Resistance-Trained Adults

New Zealand blackcurrant (NZBC) is a supplement made from a berry naturally rich in plant compounds called anthocyanins. Researchers have studied these compounds for years and found that they may help the body by improving blood flow, reducing post-exercise stress on the body, and supporting energy production. Most of that research, however, has focused on endurance athletes like runners and cyclists. Almost nothing was known about whether NZBC could benefit people who do strength training. That is what this study was designed to find out. Twenty healthy, resistance-trained men and women between the ages of 18 and 40 were recruited. Each participant completed four different conditions over the course of the study: taking no supplement at all, taking a placebo (a dummy capsule with no active ingredient), taking a low dose of NZBC (250 mg per day for seven days), and taking a higher dose of NZBC (600 mg per day for seven days). Neither the participants nor the researchers evaluating them knew which capsule was being taken at any given time, a design that helps ensure the results are as reliable as possible. At the end of each seven-day period, participants came into the lab and completed a full battery of tests. Measurements included how much weight could be lifted for one maximum effort on the bench press and leg press, how much total volume could be completed across multiple sets, and how fast and powerfully the bar could be moved. Participants also completed a 30-second all-out cycling sprint to test anaerobic fitness, and a paper-and-pencil color-word test to measure focus and mental sharpness. Strength increased noticeably. After taking either dose of NZBC, participants were able to lift more weight on both the bench press and leg press than when taking the placebo or no supplement. The lower dose had a particularly striking effect on leg training: participants pushed through roughly 38% more total volume in their leg press sets. For bar speed and explosive power on the bench press, the higher dose had the edge. Cognitive performance followed a similar pattern. The lower dose sharpened mental performance across several parts of the color-word test, while the higher dose made a more modest but still meaningful difference on one section. The sprint cycling test showed no differences between conditions. Importantly, both doses were safe and well-tolerated, with no meaningful side effects reported throughout the study. One week of supplementation was sufficient to produce real differences in strength, power, and mental sharpness, and neither dose raised any safety concerns.

The Effect of Arterial Carbon Dioxide Levels on Cerebral Blood Flow and Cerebral Autoregulation in the Steep Trendelenburg Position During Robot-assisted Prostatectomy, and Its Effect on Postoperative Cognition

Patients scheduled for robot-assisted prostatectomy will be randomized to either high or low concentrations of carbon dioxide in the blood. This will be managed by applying different ventilation strategies during anesthesia.The levels will be distinctly different. The investigators will assess whether different concentrations of carbon dioxide in blood results in different brain blood flow levels and different intracranial pressure during laparascopic surgery in the head-down tilted position. The investigators also will assess if different carbon dioxide level will manifest in different cognitive abilities in the two study groups, measured on day 1 post-surgery.

Exploring Virtual Reality Adventure Training Exergaming

The current project aims to design and implement an 8-week Virtual Reality Adventure Therapy Exergaming (V-RATE) intervention focused on women veterans. A randomized controlled trial using a repeated measure design with a 1-month follow-up assessment will be employed to examine effects on physical and mental health outcomes.

Radicle Clarity™ RBB: A Study Assessing the Impact of Health and Wellness Products on Cognitive Function and Related Health Outcomes

A Randomized, Double-Blind, Placebo-Controlled Study Assessing the Impact of Health and Wellness Products on Cognitive Function and Related Health Outcomes

Effects of Exercise Board Games on Cognitive Function in Older Adults

This study aims to evaluate the effects of an exercise-based board game intervention on cognitive function, physical function, and health promotion among community-dwelling older adults. Participants will take part in a structured program that combines physical activity with board game activities. The intervention is designed to promote cognitive engagement, social interaction, and physical movement in older adults. Outcome measures will be collected before and after the intervention to examine changes in cognitive and physical function.

Long-term Follow-up of Dexmedetomidine-esketamine and tDCS for Neurocognitive Complications After Surgery

Neurocognitive complications, mainly delirium and neurocognitive disorders, are common cerebral complications in older patients after surgery and associated with worse long-term outcomes. An ongoing 2×2 factorial trial conducted by the investigators plan to test the effects of perioperative dexmedetomidine-esketamine combination and transcranial direct current stimulation (tDCS) on postoperative neurocognitive complications in older patients. This long-term follow-up of the ongoing trial aims to investigate the effects of perioperative dexmedetomidine-esketamine combination and tDCS on long-term outcomes in older patients after noncardiac surgery.

The Effects of a Novel Mitochondrial Substrate Supplement on Exercise Performance and Cognitive Function

The goal of this clinical trial is to compare the effects of taking a new supplement for 16 days on cognitive function and exercise performance, compared to a placebo (a supplement that looks and tastes the same, but doesn't have the same ingredients) in 40 healthy individuals - 20 young individuals (aged 18-30) and 20 older individuals (aged 50-65). The main questions it aims to answer are: * If taking the supplement for 16 days improves exercise performance, or the speed with which the body responds to the commencement of exercise. * If taking the supplement improves cognitive function. Participants will visit the lab on 5 separate occasions to: * complete some cognitive tests * complete exercise performance tests * provide blood samples All exercise tests will be on an exercise bike. After 28 (or 46 for pre-menopausal females) days to make sure the supplement has left the body fully, participants will consume the opposite supplement and repeat the tests.

Effects of Aerobic-Based Virtual Reality Exercise Training and Traditional Aerobic Exercise Training on Physical Fitness, Functional Capacity and Cognitive Function in Individuals With Down Syndrome

This study aims to investigate the effectiveness of aerobic-based virtual reality exercise training and traditional aerobic exercise training on physical fitness, functional capacity, cognitive functions and quality of life in individuals with Down syndrome.

Visual Training Effects in Esports Players

This randomized controlled study aims to investigate the acute effects of a single session of web-based visual training on balance, reaction time, and cognitive function in professional e-sports players. Participants will be randomly assigned to either a web-based visual training group or a control group. The intervention group will receive a single approximately 25-minute session including eye relaxation, eye movement exercises, convergence-divergence, accommodation, figure-ground perception, and visual attention exercises. The control group will receive no intervention. Balance, reaction time, and cognitive function will be assessed at baseline and immediately after the intervention.