NCT06142448

Brief Summary

Gait disturbances are disabling and common in Parkinson's disease (PD). Patients use many different, and typically self-developed, strategies to compensate for their walking abnormalities. There is a wide variety of compensatory strategies, of which external and internal cueing are the most commonly known. External cueing refers to externally produced predictive stimuli such as a metronome, whereas internal cueing refers to a movement reference generated internally, such as counting while walking. The efficacy of external and internal cueing varies dramatically across patients, and some patients can even be identified as 'non-responders' to a particular cue. Consequently, a one-size-fits-all approach simply does not suffice, which increases the need for better understanding of the key mechanisms behind these compensation strategies. Furthermore, it is still unknown how the efficacy of compensation strategies changes longitudinally. The goal of the UNITE-PD project is to address these questions. The investigators aim to investigate whether the efficacy of internal and external cueing changes over time, and whether it is differentially affected in responders and non-responders. In order to work towards a more personalized treatment for patients with PD, the investigators also aim to identify potential patient characteristics that can mediate the actual use of compensation strategies in daily life. The multicenter UNITE-PD project is divided in a joint package and individual site-specific packages. All partners will investigate the neural working mechanisms of compensation strategies in PD from different angles in the site-specific packages. The joint package focusses on the long-term effect of the compensation strategies and the potential patient characteristics that can influence the efficacy of the compensation strategies. In this project, the investigators will define responders and non-responders to external and/or internal cueing. With the use of extensive clinimetrics, the aim is to identify patient characteristics that might influence the efficacy. With the use of a custom made cueing app (which will be applied during a follow up period of six months), the long-term effect of cueing in the responders can be investigated. Together, all centers aim to include a total of 384 participants (Netherlands N = 104, Belgium N =90, Israel N = 75, Italy N = 115). Importantly, this sample size is not based on the joint workpackage described here, but on the numbers needed for the individual site-specific work packages.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
384

participants targeted

Target at P75+ for not_applicable parkinson-disease

Timeline
7mo left

Started Dec 2023

Typical duration for not_applicable parkinson-disease

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress81%
Dec 2023Dec 2026

First Submitted

Initial submission to the registry

November 16, 2023

Completed
5 days until next milestone

First Posted

Study publicly available on registry

November 21, 2023

Completed
10 days until next milestone

Study Start

First participant enrolled

December 1, 2023

Completed
3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

July 25, 2025

Status Verified

March 1, 2025

Enrollment Period

3 years

First QC Date

November 16, 2023

Last Update Submit

July 22, 2025

Conditions

Keywords

RehabilitationGait ImpairmentPersonalized treatmentCompensation strategies

Outcome Measures

Primary Outcomes (1)

  • Gait Variability

    Gait variability defined as the coefficient of variation of stride time. We will compare gait variability between the baseline condition, and the cueing conditions.

    Six months

Secondary Outcomes (1)

  • Gait speed

    Six months

Study Arms (2)

Responders

EXPERIMENTAL
Device: Cueing app

Non-responders

NO INTERVENTION

Interventions

All participants that are included come to the movement lab for the baseline measurement. The baseline measurement consists out of extensive clinimetrics (for example MDS-UPDRS) to identify patient characteristics. With the use of an objective gait assessment, the effectiveness of both internal and external cueing is determined. This will divide the participants in three groups; responders, non-responders and in between. Participants who clearly respond to either internal or external cueing (determined as the responders) are asked to apply the working form of cueing in daily life during the six-month follow-up. During this period the participants will use a mobile application that can provide them with a rhythmic auditory stimulus and records the use of this application. After 6 months, both the responders and non-responders are asked to return to the lab for the follow up measurement in which the baseline measurement is repeated to evaluate the effect of long-term cueing.

Responders

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Men and women of age \> 18 years with idiopathic Parkinson's disease;
  • Written informed consent.

You may not qualify if:

  • Daily usage of compensation strategies for the past month;
  • Presence of deep brain stimulation (DBS);
  • Presence of severe co-morbidity limiting ambulation (e.g. stroke, orthopaedic problems);
  • Inability to walk unaided (with the exception of a customary cane);
  • Inability to walk for \> 3 minutes consecutively;
  • Severe auditory impairments, hampering perception of auditory cues;
  • Severe cognitive impairment (MMSE \< 21)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Radboudumc

Nijmegen, Netherlands

RECRUITING

MeSH Terms

Conditions

Parkinson Disease

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 16, 2023

First Posted

November 21, 2023

Study Start

December 1, 2023

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

July 25, 2025

Record last verified: 2025-03

Locations