TAKE PART IN RESEARCH
Research explained in everyday language. Explore what teams around the world are trying to learn, who can take part and how to get in touch.
See worldwide coverage and update dates ↓Studies with early results appear under “Results reported” even if recruitment continues.
Registry records retrieved 2026-10-11 (UTC). Individual records may have older updates. Recruitment and eligibility must be confirmed with the study team.
A location is a starting point. Ask the team whether that site is accepting people and whether you can take part from where you live.
Introductions are AI-written from the registry in everyday language and have not been independently checked by a clinician. Open any study for its full name, original description and participation rules.
Studies name Parkinson’s or a related condition. Some include other conditions or healthy volunteers. Country filters use sites with matching or unreported status. A country recorded by WHO does not confirm an open local site.
Turkey
Researchers measure breathing function, breathing-muscle strength and physical fitness in people with Parkinson’s.
Learning by observing or collecting information
Ages 50 years to 80 years · Also accepts healthy volunteers
Taiwan
Researchers study connections between thinking abilities, brain activity and walking while doing another task in Parkinson’s.
Learning by observing or collecting information
Ages 40 years to 80 years · Also accepts healthy volunteers
Brazil
Researchers compare stimulation at the neck and upper back when combined with magnetic brain stimulation, measuring everyday mobility in Parkinson’s.
Testing a treatment or activity
Age 40 years and over · Does not accept healthy volunteers
France
Researchers study continuous apomorphine delivery under the skin as part of care for people with Parkinson’s near the end of life.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Canada
Researchers compare a study diet with a standard diet over time, checking practicality and effects in people with Parkinson’s.
Testing a treatment or activity
Ages 40 years to 80 years · Does not accept healthy volunteers
Canada
Researchers study a music-based approach for apathy, which can involve reduced interest or motivation in Parkinson’s.
Testing a treatment or activity
Ages 40 years to 85 years · Does not accept healthy volunteers
Belgium
Researchers examine whether signals recorded in deep brain areas can help select stimulation contacts for people with Parkinson’s.
Learning by observing or collecting information
Age 18 years and over · Does not accept healthy volunteers
Taiwan
Researchers compare an online programme with task-focused training at a clinic for people with early Parkinson’s.
Testing a treatment or activity
Ages 45 years to 70 years · Does not accept healthy volunteers
Japan, United States
Researchers collect safety and treatment outcomes after an ultrasound procedure targeting one side of the brain for advanced Parkinson’s movement complications.
Learning by observing or collecting information
Ages 30 years to 99 years · Does not accept healthy volunteers
United Kingdom, United States
Researchers collect longer-term safety and effectiveness information after an ultrasound procedure for shaking not adequately controlled by medicine.
Learning by observing or collecting information
Ages 30 years to 99 years · Does not accept healthy volunteers
United States
Researchers study how the body’s balance system and brain activity contribute to starting or changing movement in Parkinson’s.
Testing a treatment or activity
Ages 21 years to 80 years · Also accepts healthy volunteers
United States
Researchers study whether stimulation of the cerebellum, a part of the brain, affects thinking and mood across several neurological and mental-health conditions.
Testing a treatment or activity
Ages 18 years to 90 years · Also accepts healthy volunteers
United States
Researchers make additional measurements during planned brain stimulation surgery to understand a movement-related pathway in Parkinson’s.
Testing a treatment or activity
Ages 21 years to 75 years · Does not accept healthy volunteers
Netherlands
Researchers compare a device that detects freezing and provides walking cues with usual care, including an assessment of costs.
Testing a treatment or activity
Age range not listed · Does not accept healthy volunteers
United States
Researchers study an imaging approach in people whose nervous system has difficulty regulating functions such as blood pressure.
Testing a treatment or activity
Age 18 years and over · Also accepts healthy volunteers
Canada
Researchers compare aerobic, strength and combined exercise programmes to study their effects on sleep in Parkinson’s.
Testing a treatment or activity
Age 40 years and over · Does not accept healthy volunteers
Italy
Researchers study approaches to diagnosis and treatment tailored to individual differences in Parkinson’s and Alzheimer’s disease.
Learning by observing or collecting information
Age 18 years and over · Also accepts healthy volunteers
Denmark
Researchers test a programme that brings together different exercise approaches in people with moderate to advanced Parkinson’s.
Testing a treatment or activity
Age 18 years and over · Does not accept healthy volunteers
United States
Researchers study stimulation delivered through the skin over the spinal cord, focusing on walking and body-control problems in Parkinson’s.
Testing a treatment or activity
Ages 18 years to 80 years · Does not accept healthy volunteers
China
Researchers collect information across centres to understand causes, patterns and outcomes of episodes when people cannot keep walking.
Learning by observing or collecting information
Ages 30 years to 85 years · Does not accept healthy volunteers
WORLDWIDE COVERAGE
Studies are imported from ClinicalTrials.gov, WHO’s international collection and the European CTIS registry. WHO brings together national and regional registries, including records from Asia, Africa and Latin America. Recruiting and upcoming listings have English introductions; older records awaiting an introduction show their registry title.
We aim for broad worldwide coverage, but no registry includes every study. Unregistered studies, reporting delays and missing translations can leave gaps. A missing paper does not mean that no results exist.
Import available
Last complete check: 2026-10-11
4689 related source records before matching duplicates
Update needs attention; retaining the last complete import
Last complete check: 2026-10-11
4384 related source records before matching duplicates
Import available
Last complete check: 2026-10-11
73 related source records before matching duplicates
These dates show when WHO processed a registry’s data, not when every study was last updated. WHO’s “not recruiting” label does not distinguish planned, completed and follow-up studies.
Source attribution: WHO ICTRP ↗. The source records and processing dates remain available on each study page. English registration fields are preferred; original descriptions may include local-language material. Registry imports and paper matching run daily. New or changed descriptions enter an editorial queue.