Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Age |
Years since birth |
baseline |
|
Other |
Sex |
Male or female |
baseline |
|
Other |
Montreal Cognitive Assessment |
A screening test to assess global cognition (0-30). Higher scores indicate better performance. |
baseline |
|
Other |
Shortened Iconographical Falls Efficacy Scale |
A 10-item scale to assess fear of falling. Each item is scored on a 4-point scale (1 = not at all concerned to 4 = very concerned). |
baseline |
|
Other |
Fall history |
Number of falls in the past month |
baseline |
|
Other |
Movement Disorder Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS) part I |
A 13-item rating scale to assess non-motor experiences of daily living (0-52). Higher scores indicate a worse outcome. |
baseline |
|
Other |
Movement Disorder Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS) part III |
An 18-item motor examination to assess motor symptoms (0-132). Higher scores indicate a worse outcome. |
baseline |
|
Other |
Movement Disorder Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS) part IV |
A 6-item rating scale to assess motor complications. Higher scores indicate a worse outcome. |
baseline |
|
Other |
Hoehn and Yahr scale |
A scale to assess disease severity/progression (0-5). Higher scores indicate more severe symptoms. |
baseline |
|
Other |
New Freezing of Gait Questionnaire |
A 9-item questionnaire to assess freezing of gait severity (0-28). Higher scores indicate more severe freezing of gait. |
baseline |
|
Other |
Time since diagnosis |
The number of days since the diagnosis of Parkinson's Disease |
baseline |
|
Other |
Blood pressure |
The ratio of systolic over diastolic blood pressure (mm Hg) |
baseline |
|
Other |
Medication |
Number, type and dose (mg) of medication |
baseline |
|
Primary |
Fall events |
Number of accidental falls documented using a daily fall diary with monthly telephone follow-ups. |
baseline to 6 months after baseline |
|
Secondary |
Walking speed |
Walking speed (meters/second) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Walking cadence |
Walking cadence (steps/minute) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Step length |
Step length (meters) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Hip, knee and ankle joint angle during walking |
Hip, knee and ankle joint angle during walking (°) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Hip, knee and ankle joint moment during walking |
Hip, knee and ankle joint moment during walking (Nm/kg) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Hip, knee and ankle joint power during walking |
Hip, knee and ankle joint moment during power (W/kg) measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Freezing of gait |
Number of freezing of gait events measured using the Gait Real-time Interactive Lab (GRAIL) system (Motekforce Link, The Netherlands). |
baseline during 6 min self-paced treadmill walking in a virtual environment |
|
Secondary |
Spontaneous speech production |
Audio recordings analyzed using PRAAT software to assess spontaneous speech production |
baseline; baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Spontaneous speech production |
Audio recordings analyzed using Motor Speech Profile software to assess spontaneous speech production |
baseline; baseline during 3 min self-paced treadmill walking; baseline during 3 min self-paced treadmill walking while answering semi-standardized questions; baseline during 3 min self-paced treadmill walking while describing a virtual environment |
|
Secondary |
Speech Handicap Index |
A 15-item self-reported questionnaire based on the Parole Handicap Index to evaluate the physical, functional and psychosocial impact of dysarthria (0-60). Higher scores indicate a higher level of speech-related problems. |
baseline |
|
Secondary |
Otoscopy |
A otoscopic test to examine the external auditory canal and the tympanic membrane |
baseline |
|
Secondary |
Tympanometry |
An auditory test to assess the middle-ear function |
baseline |
|
Secondary |
Pure tone audiometry |
An auditory test to assess hearing threshold levels |
baseline |
|
Secondary |
Otoacoustic Emissions Test |
An auditory test to measure cochlear outer hair cell function |
baseline |
|
Secondary |
Video Head Impuls Test |
A vestibular function test to objectify high frequency function of the horizontal and vertical semicircular canals |
baseline |
|
Secondary |
Cervical Vestibular Evoked Myogenic Potential Testing |
A vestibular function test to assess the saccular and inferior vestibular nerve function |
baseline |
|
Secondary |
Ocular Vestibular Evoked Myogenic Potential Testing |
A vestibular function test to assess the utricular and superior vestibular nerve function |
baseline |
|
Secondary |
Ocular Motor Testing |
A vestibular function test to evaluate oculomotor function |
baseline |
|
Secondary |
Dix-Hallpike Test |
A diagnostic maneuver to identify benign paroxysmal positional vertigo |
baseline |
|
Secondary |
Roll Test |
A diagnostic maneuver to identify benign paroxysmal positional vertigo |
baseline |
|
Secondary |
Static visual acuity |
Static visual acuity measured using a Snellen chart (static logMAR) |
baseline |
|
Secondary |
Dynamic visual acuity |
Visual acuity during head movement measured using a Snellen chart relative to static visual acuity (static logMAR - dynamic logMAR) |
baseline |
|
Secondary |
Dizziness Handicap Inventory |
A 25-item self-assessment inventory to evaluate self-perceived handicapping effects of dizziness (0-100). Higher scores indicate a greater perceived handicap due to dizziness. |
baseline |
|