Clinical Research Directory

Effect of Magnesium Supplementation on Sleep Quality and Cognitive Function in Saudi Adults

The goal of this clinical trial was to evaluate whether magnesium citrate supplementation improved sleep quality and cognitive function in healthy Saudi adults. It also assessed the effects of magnesium on selected blood markers. The main questions it aimed to answer were: Did magnesium supplementation improve sleep quality? Did magnesium supplementation improve cognitive function? Researchers compared participants who received magnesium citrate to a control group that did not receive any intervention to evaluate its effects. Participants: Took magnesium citrate (400 mg daily) for 90 days (two capsules: one in the afternoon and one 1-2 hours before bedtime) Visited Umm Al-Qura University twice (before and after the intervention) for: Sleep quality assessment Cognitive function assessment Blood sample collection to measure serum magnesium and HbA1c The control group did not receive any supplementation during the study period.

A Multicenter Interventional Study on the Use of a 3-Degree-of-Freedom (3DOF) Platform to Evaluate the Safety and Usability of the System and Its Impact on Balance, Proprioception, and Neurological Deficits in the Rehabilitation of Patients With Neurological Disorders.

This multicenter interventional study aims to evaluate a three-degrees-of-freedom dynamic platform (3DoF Platform) designed to support rehabilitation of balance, proprioception, and motor and cognitive functions in patients with neurological disorders. The device integrates a mobile platform capable of roll, pitch, and vertical translation movements, a markerless motion-capture system, and an interactive environment delivered through a monitor or virtual reality headset. Compared with conventional rehabilitation systems, it offers an additional vertical degree of freedom and increased proprioceptive stimulation, with the ability to customize exercises according to individual patient capabilities. The clinical conditions under investigation include Parkinson's disease, post-stroke motor impairment, amyotrophic lateral sclerosis, and mild cognitive impairment, all of which are associated with deficits in balance and proprioception. The novelty of this study lies in the combined use of the 3DoF platform, the markerless acquisition system, and exergames integrated with a mathematical model that adapts the platform's dynamic response in real time. The primary objective is to assess the usability, feasibility, and safety of the device. Secondary objectives include evaluating the impact of the intervention on balance, motor performance, cognitive functions, stress, fatigue, and quality of life, as well as comparing conventional rehabilitation with and without the addition of the device. The study involves 45 patients and 15 healthy volunteers and is structured into an initial phase of testing on healthy subjects and a subsequent randomized two-arm treatment phase for patients.

Prefrontal Neuroplasticity and Coping Strategies in Healthy Population

The current study serves as a pilot for the GRF project "Predicting illness trajectories in fully remitted major depression using concurrent TBS/fNIRS." The project examines whether intermittent theta-burst stimulation (iTBS) induces immediate changes in prefrontal excitability in healthy individuals, compared to sham stimulation. In this randomized, sham-controlled trial, investigators will assess several psychological measures-including the Perceived Stress Scale and the Coping Inventory for Stressful Situations-to explore how stress levels and coping strategies relate to immediate prefrontal cortex (PFC) activity changes following TBS.

Pharmacokinetic Characteristics, Safety, and Immunogenicity of HLX319 Compared With EU-Phesgo®

The study is being conducted to compare the pharmacokinetic (PK) parameters of HLX319 and EU-Phesgo® after a single subcutaneous administration in healthy male subjects in China, providing a basis for the design of subsequent clinical study protocols.

Eight-week Sports Injury Prevention Program

This study aims to find out whether an 8-week sports injury prevention program can improve lower-body performance-such as power, agility, and balance-among female college athletes in Saudi Arabia. Sports participation has increased among women in Saudi Arabia, but many injury-prevention programs were originally designed for male athletes and may not meet the specific needs of females. This study will help determine whether a tailored program can reduce injury risks and improve athletic performance. Female athletes aged 18-35 years who have been training and competing for at least one year can participate. Athletes with recent injuries, pregnancy, or chronic medical conditions that could affect performance will not be included. Participants will complete tests before and after the program, including jumping, balance, and agility assessments. The prevention program includes warm-up exercises, stretching, strengthening, jumping drills, balance work, and agility training. By comparing results before and after the program, the study will show whether this type of training can help female athletes stay safer and perform better.

Effects of NR Supplementation on Metabolic Flexibility in Zone 2 Training

Zone 2 training, a low-intensity endurance exercise performed at approximately 66-80% of VO₂max or near the first ventilatory threshold, has gained popularity for improving aerobic capacity, fat metabolism, and mitochondrial efficiency. It preserves glycogen stores and delays fatigue, making it an essential training method for both athletes and recreational exercisers. Nicotinamide adenine dinucleotide (NAD) is a vital metabolite that regulates cellular energy metabolism and redox homeostasis. It participates in oxidative reactions within the tricarboxylic acid cycle and electron transport chain, sustaining ATP synthesis and mitochondrial efficiency. Exercise influences multiple pathways of NAD metabolism, altering the NAD⁺/NADH ratio and thereby affecting energy production and fatigue resistance. Studies have shown that both aerobic exercise and NAD precursor supplementation (e.g., nicotinamide riboside \[NR\]) can elevate body NAD levels and enhance mitochondrial function, though findings remain inconsistent due to variations in dosage and participants' characteristics. This study aims to investigate how acute NR supplementation interacts with Zone 2 cycling training in adults. Specifically, it examines the temporal and dose-dependent effects of NR supplementation on metabolic flexibility and exercise performance. The results may clarify the potential synergistic benefits of combining NAD supplementation with low-intensity endurance training to improve aerobic adaptability.

A Muscle-brain Interplay Study in Neurological Disorders

Despite the improvements in life expectancy, neurodegenerative diseases (NDGs) have become the most dreaded disorders of older people. Aged brains show characteristic changes that are linked to neurodegeneration raising the question of whether these hallmarks represent the harbingers of NDGs. Lifestyle factors including, in particular physical exercise, have given particular attention to factors associated to movement issue as ones of the major factors in modulating the risk of developing NDGs, emphasizing the interest in the muscle-brain axis. Indeed, one of the crucial systems severely affected in several neuromuscular diseases is the loss of effective connection between muscle and nerve, and the neuromuscular junction (NMJ) represents the critical region at the level of which the two entities communicate. Even if controversy exists on whether pathological events beginning at the NMJ precede or follow loss of motor units, some recent data highlight as NGDs (e.g. Amyotrophic Lateral Sclerosis, Alzheimer's Disease, and Parkinson's Disease) and Aging share some common pathologic features such as the loss of fast-twich fiber, a decreased number of synaptic vesicles and sarcopenia giving evidence supports the notion that NMJ dismantlement can occur independently from motor neuron degeneration and may represent an early pathogenic signature of muscle-nerve communication defects. The M-Brain project is an observational, analytical case-control study that will apply a new approach to interpret data underling the NMJ dismantlement in NDGs patients by comparing their clinical and biological information with data obtained from people who have had a so called "good aging" and those who have had a "bad aging". The study will collect data useful to identify potential predisposing or risk factors for the subsequent development of a NDGs or able to predict the phenotype traiectories of selected pathologies with differerent movement levels. The combination of a muscular and neurological phenotyping and a biological characterization combining biomarkers, miRNA and extracellular vesicle (EV) assessments will allow to better identify the determinants of muscle-brain cross-talk that can then be used as potential indicators for the definition of critical morphological and functional components involved in aging and some NGDs. The project then will aim to identify phenotyope trajectories of patients giving particular attention to the brain-muscle axis and movement issues in order to provide information useful for future clinical strategies able to minimaze risk/predisponent Factors.

Movement Quality and Mechanical Properties of the Muscle

Movement quality is considered a comprehensive indicator of neuromuscular control, segmental stability, and efficient force transmission, and is recognized as an important determinant of musculoskeletal health and functional performance. Optimal movement patterns help distribute joint loading appropriately, whereas suboptimal movement strategies may contribute to increased biomechanical stress and the development of overuse injuries over time. In recent years, the passive mechanical properties of muscle (stiffness, tone, and elasticity) have been suggested to influence segmental stability and movement control; however, the relationship between these variables has not been sufficiently investigated in healthy populations. The aim of this study is to examine the association between movement quality and the passive mechanical properties of skeletal muscle in healthy adults. Healthy adult individuals will be included in the study. The sample size was determined based on a priori power analysis, and a total of 42 participants will be recruited. Movement quality will be assessed using the Functional Movement Screen (FMS). The FMS is a standardized screening tool consisting of seven fundamental movement tasks designed to evaluate basic movement patterns. Each task will be scored on a scale from 0 to 3, and the total score (0-21 points) will be used as an indicator of overall movement quality. The passive mechanical properties of muscle (stiffness, tone, and elasticity) will be measured using a portable and non-invasive device, the MyotonPRO 5, from the quadriceps, hamstring, gastrocnemius, tibialis anterior, and erector spinae muscles. Measurements will be performed at standardized anatomical reference points with the muscle in a relaxed position. The device probe will be placed perpendicular to the skin surface over the muscle, and the passive viscoelastic response of the tissue will be recorded. The relationship between variables will be analyzed using Pearson or Spearman correlation analysis, depending on data distribution characteristics.

Prospective Multicentre Study for the Application of Telomere Measurement Technology as a Tool for Lung Cancer Diagnosis

This research is a clinical performance study of in vitro diagnostic device (IVD), a prospective, multicentre, open-label, case-control clinical investigation aimed at constructing a predictive model that allows results to be classified as positive or negative in relation to the probability of having lung cancer.

A Phase Ia Single Ascending-Dose Study of Subcutaneous EB070 Injection in Healthy Volunteers

The goal of this Phase Ia clinical trial is to evaluate the safety, tolerability, and pharmacokinetics of EB070 injection following single ascending subcutaneous doses in healthy adult volunteers. The main questions it aims to answer are: Is EB070 injection safe and well tolerated at increasing single subcutaneous dose levels in healthy subjects? What are the pharmacokinetic characteristics of EB070 after single-dose administration? This is a single-center, randomized, double-blind, placebo-controlled, single ascending-dose (SAD) study. A total of 36 healthy volunteers will be enrolled and assigned to one of five dose cohorts (21 mg, 75 mg, 225 mg, 450 mg, or 600 mg). Subjects in each cohort will be randomized in a 3:1 ratio to receive a single subcutaneous injection of EB070 or placebo. A sentinel dosing strategy will be applied. In the 21 mg cohort, one subject will initially receive EB070. In the remaining cohorts, two sentinel subjects (one receiving EB070 and one receiving placebo) will be dosed first. Dose escalation and enrollment of the remaining subjects will proceed after evaluation of safety and tolerability within 48 hours after dosing. Participants will: Undergo screening assessments prior to dosing Receive a single subcutaneous injection of EB070 or placebo Stay in the Phase I unit for approximately 3 days for safety monitoring and pharmacokinetic and anti-drug antibody (ADA) sample collection Return for scheduled outpatient visits for PK, ADA, and safety assessments through Day 113 Safety will be assessed throughout the study by monitoring adverse events, vital signs, physical examinations, 12-lead ECGs, and laboratory tests. Pharmacokinetic parameters and anti-drug antibodies (ADA) will be evaluated as secondary outcomes.

Dihydroberberine Effects on Body Composition and Metabolic Health in Healthy Adults

The goal of this clinical trial is to evaluate whether dihydroberberine (DHB) supplementation can improve body composition, blood sugar control, energy levels, appetite, and mood in healthy adults with overweight or mild obesity. The study focuses on men and women aged 35-55 years with a BMI between 27.0 and 33.0 kg/m². The main questions it aims to answer are: Does daily DHB supplementation lead to greater reductions in body weight over 12 weeks compared to placebo? Does DHB improve glycemic responses, appetite regulation, energy levels, and mood, both acutely (short-term) and chronically (over 12 weeks)? Researchers will compare two groups-one receiving DHB (400 mg/day) and the other receiving a placebo-administered as two capsules twice daily for 12 weeks. Participants will: Attend three in-clinic visits over approximately 14 weeks (including screening, baseline, and week 12 visits) Undergo mixed-meal tolerance tests (MTTs) to assess glucose metabolism, appetite, and energy levels Complete body composition assessments (including DXA scans), blood tests (e.g., glucose, insulin, HbA1c), and mood questionnaires (POMS-2) Be monitored for safety throughout the study

French Military Firefighters to Assess Relationships Between Exposome and Health.

The aim of the study is to describe professional exposures and health events among French military firefighters (both active-duty personnel and veterans) and identify potential relationships between the exposome (the total history of occupational and personal exposures) and health status in these populations. The study is based on a self-administered questionnaire that collects retrospective and present information about exposures and health conditions.

Correlation of Diaphragm Shear-Wave Elastography With Transdiaphragmatic Pressure in Healthy Adults: a Feasibility Study

Changes in intrapleural pressure after lung volume reduction in Chronic Obstructive Pulmonary disease (COPD) patients can lead to complications, including an increased risk of pneumothorax. This procedure, intended to improve lung function, may disturb the pressure balance within the pleural space, potentially precipitating pneumothorax. Careful monitoring of intrapleural pressure could help predict patients at risk. However, intrapleural pressure can currently only be measured invasively. Diaphragm shear-wave elastography (SWE) has been shown to reflect transdiaphragmatic pressure during isovolumetric inspiratory efforts and ventilation against inspiratory loading, and therefore may serve as a non-invasive surrogate for intrapleural pressure. This project outlines a stepwise study plan to evaluate SWE as a tool for intrapleural pressure monitoring (Figure 1). The project only moves to the next phase is the study previous phase was achieved successfully. The current protocol involves the first phase: to validate diaphragm SWE against transdiaphragmatic pressure and assess measurement reliability for local ultrasound systems in healthy adults.This prospective, single-centre, observational validation study will include twelve healthy adult volunteers. During a single study session, participants will perform standardized inspiratory efforts while simultaneous measurements of diaphragm SWE, transdiaphragmatic pressure (via esophageal and gastric balloon catheters), and mouth pressures are obtained. These methods are routinely applied in physiological research and carry minimal risk. Apart from brief nasal or throat discomfort during catheter placement, no significant adverse effects are expected. By establishing the relationship between diaphragm SWE, transdiaphragmatic pressure, and mouth pressures, this study aims to provide the essential validation step for future clinical research in COPD patients following lung volume reduction.

Acute Effects of Aerobic Exercise and High-intensity Interval Exercise With Immersive Virtual Reality

This study aims to compare the acute effects at the cardiovascular (heart rate, blood pressure) and physiological (lactate) levels, as well as the perception of effort and fatigue, of four exercise modalities, one based on the traditional aerobic training methodology, another based on high-intensity interval training (HIIT), another consisting of aerobic exercise performed in conjunction with an immersive virtual reality (VR) application, and a last one consisting of exercise with HIIT-type parameters but also performed in conjunction with an immersive VR application. All participants will complete one session of each of the four exercise modalities, analyzing the variables studied in each for subsequent analysis and comparison.

Assessment of Pressure Pain Threshold (PPT) and Conditioned Pain Modulation (CPM) After Effect in Patients With and Without Tennis Elbow (TE)

This study at Hashemite University looks at how people with and without tennis elbow (AKA lateral elbow tendinopathy) feel pressure pain and how their bodies briefly "turn down" pain after a cold stimulus. Participants complete brief questionnaires (basic demographics without names, a tennis-elbow symptom form, and a physical-activity form) and then have their pressure-pain threshold (PPT) tested with a handheld device that slowly increases pressure on standard spots near the elbow and wrist; they say when it first becomes painful. To test the body's built-in anti-pain system (conditioned pain modulation, CPM), one hand is placed in ice water (the cold-pressor task) and PPT is measured again at set times (before, during, and after the cold stimulus) to see how much pain sensitivity changes and how long that change lasts. Both PPT reliability and CPM after effect are measured in this study. The study findings may help improve future assessment and treatment of musculoskeletal pain conditions.

A Trial to Investigate the New Caulis Pro® Low Air Loss (LAL) System

Investigation of biomechanical and physiological functions of laying on a new mattress in healthy volunteers.

A Study to Evaluate the Safety, Immunogenicity, and Pharmacokinetics of GR2303 in Healthy Adult

he goal this clinical trail is to evaluate the safety、Pharmacokinetic and immunogenicity of GR2303 injection。 Subjects will be enrolled in different groups in sequential order, and within each group will be randomly assigned to receive either GR2303 injection or placebo administration, with each Subjects will be enrolled in only one of these groups

Mindfulness Intervention for Maltreatment-Related Cognitive Decline

The goal of this clinical trial is to examine whether an online mindfulness-based training program can help improve cognitive function including attention, emotional regulation, and mental health (such as depression and anxiety) in young adults (ages 19 to 40) who have experienced maltreatment. The main questions it aims to answer are: * Can a 4-week online mindfulness program improve cognitive function including attention in adults with a history of maltreatment? * Does the program reduce symptoms of depression and anxiety compared to a control group? Researchers will compare a mindfulness training group with a waiting-list control group to see if the intervention leads to improvements in psychological and cognitive functioning. Participants will: * Complete psychological and cognitive assessments before and after the 4-week period * Watch weekly online educational and mindfulness practice videos (e.g., breathing, body scan, walking meditation) * Perform weekly mindfulness-based assignments through a study website * Engage in optional interaction via a chat channel