Influence of Hawthorne Effect and Dual-tasks on Gait in CP

Cerebral Palsy Clinical Trial

Official title:

Ecological Validity of Clinical Gait Analysis in Children With Cerebral Palsy: Influence of the Hawthorne Effect and Dual-tasks. A Pilot Study

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05417399
• Other study ID #: 2022-13822
• Status: Recruiting
• Start date: September 1, 2022
• Est. completion date: January 1, 2026

Study information

• Verified date: April 2024
• Source: Roessingh Research and Development
• Contact: Martin Oude Alink, Msc
• Phone: 0031534875454
• Email: m.oudealink[@]roessingh.nl
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

It is the clinical experience of the authors that some children with cerebral palsy who walk in crouch gait show sufficient knee extension during the clinical gait analysis, but walk in considerable knee flexion when they leave the gait laboratory. Possible differences between walking in a gait lab and walking in daily life may be caused by the effect of observational awareness in the lab (also known as the Hawthorne effect), and the lack of dual-tasks (DT) during the analysis (which are common during daily life walking). Since so far there is no technique to reliably measure gait kinematics in children with CP outside of the laboratory, the researchers aim to objectify the influence of both the Hawthorne effect and dual-tasks by introducing different conditions during a standard clinical 3D gait analysis.

Description:

Study design: Observational study Study population: Patients with cerebral palsy, bilateral spastic, knee flexion gait pattern, GMFCS classification I-III, age 4-16 years. Objective: To determine the effect of observational awareness (the Hawthorne effect) and dual-tasks on spatiotemporal and kinematic variables during a clinical 3D gait analysis. Primary research question: Does reduced observational awareness and/or introduction of a dual-task influence knee flexion in stance phase in children with spastic diplegie cerebral palsy and knee flexion gait? Secondary research questions: 1. Does reduced observational awareness and/or introduction of a dual-task increase toe walking in children with spastic diplegie cerebral palsy and knee flexion gait? 2. In children with spastic diplegic cerebral palsy and knee flexion gait, do spatiotemporal gait parameters change when observational awareness is reduced and/or a dual-task is introduced? Conditions in which gait data will be gathered: 1. With awareness of observation + without Dual-task 2. With awareness of observation + with Dual-task 3. Without awareness of observation + without Dual-task 4. Without awareness of observation + with Dual-task

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 15
• Est. completion date: January 1, 2026
• Est. primary completion date: January 1, 2026
• Accepts healthy volunteers: No
• Gender: All
• Age group: 4 Years to 16 Years

Eligibility

Inclusion Criteria:

• Cerebral palsy, bilateral spastic, GMFCS classification I-III
• Age <16 years
• Use of bilateral AFO's (rigid or ground reaction AFO's) to improve knee extension in stance

Exclusion Criteria:

• Behavioural issues or poor instructability which might affect participation in the protocol
• Significant visual disorders
• Other diagnoses influencing gait
• Not willing to sign informed consent before inclusion

Related Conditions & MeSH terms

• Cerebral Palsy
• Gait Disorders, Neurologic
• Kinematics
• Nervous System Diseases

Locations

Country	Name	City	State
Netherlands	Roessingh Research and Development	Enschede	Overijssel

Sponsors (1)

Lead Sponsor	Collaborator
Roessingh Research and Development

Country where clinical trial is conducted

Netherlands, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Minimal knee flexion during the single support phase	Minimal knee flexion during the single support phase	Day 1
Secondary	Foot to floor angle at initial contact		Day 1
Secondary	Knee flexion at initial contact		Day 1
Secondary	Foot to floor angle at moment of minimal knee flexion in single support phase		Day 1
Secondary	Variation of knee kinematics in stance phase	Calculated with the Winters-Waveform Coefficient of variation	Day 1
Secondary	Variation of ankle kinematics in stance phase	Calculated with the Winters-Waveform Coefficient of variation	Day 1
Secondary	Walking speed		Day 1
Secondary	Cadence		Day 1
Secondary	Step length		Day 1