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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05890755
Other study ID # 2023-00213
Secondary ID
Status Recruiting
Phase
First received
Last updated
Start date June 6, 2023
Est. completion date February 28, 2025

Study information

Verified date June 2023
Source University of Zurich
Contact Linard Filli, Dr.
Phone +41 44 510 72 12
Email linard.filli@balgrist.ch
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Healthy subjects will be invited to fill out a questionnaire regarding falls and balance skills followed by normal walking trials on a treadmill at 9 different speeds (0.28-1.4 m/s). Key gait parameters for the normative database will be collected. During the perturbation trials, the subjects will walk at a constant speed (1.2 m/s). The treadmill belts are ac, - or decelerated during the perturbations according to three different perturbation algorithms with varying perturbation onset. Movements will be analyzed by 3D motion capture, force plates, surface electromyography and IMU sensors. All methods are non-invasive and commonly used in the field of biomechanics.


Recruitment information / eligibility

Status Recruiting
Enrollment 44
Est. completion date February 28, 2025
Est. primary completion date February 28, 2025
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: - Healthy subjects aged 18-40 years and 60-80 years - Ability to walk at minimum 30 minutes at a regular pace without assistance or breaks - Written informed consent as documented by signature (see informed consent form) Exclusion Criteria: - Women who are pregnant or breast feeding - Current neurological problems affecting walking function and balance - Current orthopedic problems affecting upper and lower extremity movements - History of alcohol abuse or the intake of psychotropic drugs - History of major cardiac condition (e.g., infarction, insufficiency (NYHA II-IV)) - History of major pulmonary condition (e.g., chronic obstructive pulmonary disease (GOLD II-IV)) - Current major depression or psychosis - Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia - Fever of unknown origin

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Mechanical pertubation
Acceleration or deacceleration of one treadmill gait belt.

Locations

Country Name City State
Switzerland Balgrist Campus Zurich

Sponsors (1)

Lead Sponsor Collaborator
University of Zurich

Country where clinical trial is conducted

Switzerland, 

Outcome

Type Measure Description Time frame Safety issue
Primary Calculation of Margins of Stability (MoS) in anterior-posterior direction at foot contact Difference between base of support and interpolated center of mass (mm), based on 3D motion capture. Once during visit 1
Primary Step length at baseline, before (Pre) and after (Recovery step 1-10) perturbation Once during visit 1
Secondary Step width at foot contact of baseline, before (Pre) and Recovery steps 1-10 Once during visit 1
Secondary Calculation of Margin of stability medial-lateral direction at foot contact of baseline, before (Pre) and Recovery steps 1-10 Difference between base of support and interpolated center of mass (mm), based on 3D motion capture. Once during visit 1
Secondary Maximal trunk velocity during gait cycle at of baseline, before (Pre) and Recovery steps 1-10 to detect fast trunk movement to gain balance Optical markers are placed on the upper body of the subjects and will be used for calculation (distance over time) of the trunk velocity. Once during visit 1
Secondary 3D kinematic gait profiles to analyze detailed movement patterns/strategies The optical markers are placed according to the Plug-in gait marker set in Vicon Nexus (motion capture system). Hip, knee, ankle and trunk angles are calculated from this marker set. Once during visit 1
Secondary EMG analysis to detect reaction time and activity patterns of different leg muscles Once during visit 1
Secondary Questionnaire regarding the incidence of falls in the last six months Contains questions how often und the reason why the subject falls Once during visit 1
Secondary Activities specific Balance Confidence scale (ABC scale) Contains 16 questions rating the balance confidence between 0-100%. 100% means absolutely confident in doing some activity Once during visit 1
Secondary Questionnaire regarding the perceived intensities of the three perturbation algorithms Judging the three pertubation algorithms according to their intensity, inconvenience and how realistic the slipping felt. Scale ranges from 0-10, whereas 10 is the most intense Once during visit 1
Secondary Functional Gait Assessment (FGA) as a clinical balance test Assess the dynamic stability during different walking tasks. In total, 30 points are possible, at 22 points is the cut off score to classify the fall risk in older adults in predicting falls. Once during visit 1
Secondary A set of kinematic parameters Measurement of hip, knee, ankle and spine angles during walking in degrees (°). Once during visit 1
Secondary A set of kinetic parameters Ground reaction forces measured by force plates in Newton (N). Once during visit 1
Secondary A set of spatiotemporal parameters Stance time, double stance time in seconds (s). Once during visit 1
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