Study: NCT04440033

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Locomotor assessments
Description: First, 9 anthropometric measurements will be taken, 39 reflective markers will be placed, and a 6-min practice walking session will be conducted to familiarize participants with self-paced treadmill walking (SPTW). Thereafter, participants will partake in 7 experimental conditions in a (semi-)randomized order:~* 3 min standing~* 3 min standing while answering semi-standardized questions~* 3 min SPTW~* 3 min SPTW while answering semi-standardized questions (SPTW-Q)~* 3 min SPTW while verbally describing a VR environment (SPTW-VR1)~* 6 min SPTW in a VR environment containing freezing of gait provoking elements (SPTW-VR2)

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Locomotor assessments
Description: First, 9 anthropometric measurements will be taken, 39 reflective markers will be placed, and a 6-min practice walking session will be conducted to familiarize participants with self-paced treadmill walking (SPTW). Thereafter, participants will partake in 7 experimental conditions in a (semi-)randomized order:~* 3 min standing~* 3 min standing while answering semi-standardized questions~* 3 min SPTW~* 3 min SPTW while answering semi-standardized questions (SPTW-Q)~* 3 min SPTW while verbally describing a VR environment (SPTW-VR1)~* 6 min SPTW in a VR environment containing freezing of gait provoking elements (SPTW-VR2)

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Speech assessments
Description: * Acoustic analysis (including voice reports and formant analysis), video recording and motor speech profile (including analysis of diadochokinesis, voice, standard syllabic rate, intonation and second formant (F2)).~* Spontaneous speech production will be assessed by answering semi-standardized questions based on the Aachen Aphasia Test and by describing a VR environment projected on a 180-degree cylindrical screen~* The Speech Handicap Index (a 15-item self-reported questionnaire)

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Speech assessments
Description: * Acoustic analysis (including voice reports and formant analysis), video recording and motor speech profile (including analysis of diadochokinesis, voice, standard syllabic rate, intonation and second formant (F2)).~* Spontaneous speech production will be assessed by answering semi-standardized questions based on the Aachen Aphasia Test and by describing a VR environment projected on a 180-degree cylindrical screen~* The Speech Handicap Index (a 15-item self-reported questionnaire)

Intervention type: OTHER
Group type: ACTIVE_COMPARATOR
Intervention: Audiology assessments
Description: * Otoscopy~* Tympanometry~* Pure tone audiometry~* Otoacoustic emissions~* Video Head Impuls Test~* Cervical Vestibular Evoked Myogenic Potentials~* Ocular Vestibular Evoked Myogenic Potentials~* Oculomotor function testing~* Positional testing~* Static visual acuity test~* Dynamic visual acuity test~* Dizziness Handicap Inventory (a 25-item self-assessment inventory)

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Audiology assessments
Description: * Otoscopy~* Tympanometry~* Pure tone audiometry~* Otoacoustic emissions~* Video Head Impuls Test~* Cervical Vestibular Evoked Myogenic Potentials~* Ocular Vestibular Evoked Myogenic Potentials~* Oculomotor function testing~* Positional testing~* Static visual acuity test~* Dynamic visual acuity test~* Dizziness Handicap Inventory (a 25-item self-assessment inventory)