Optimization of Hip-exoskeleton Weight Attributes
Evaluating Optimal Weight Design Parameters of a Hip Exoskeleton Designed for Rehabilitation.
2 other identifiers
interventional
21
1 country
1
Brief Summary
The investigators are examining how weight distribution affects the way people walk, in terms of joint kinematics, kinetics, and muscle activity. The investigators are measuring these quantities while people walk while wearing a weighted belt. The investigators distribute the weights and walk for specified periods. They hypothesize that greater weight will have a greater effect on walking.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable healthy
Started Oct 2021
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 11, 2021
CompletedStudy Start
First participant enrolled
October 7, 2021
CompletedFirst Posted
Study publicly available on registry
November 15, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 6, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
May 6, 2022
CompletedResults Posted
Study results publicly available
November 29, 2023
CompletedNovember 29, 2023
November 1, 2023
7 months
June 11, 2021
July 28, 2023
November 6, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Pelvic Obliquity
Amount of pelvic obliquity in response to weighted belt measured using optical motion capture
One day
Secondary Outcomes (2)
Knee Flexion Angle During Swing Phase
One Day
Integrated Gastrocnemius Muscle Activity During Preswing Phase of Walking
One day
Study Arms (1)
Weight distribution and placement
EXPERIMENTALChanging where weight is distributed on belt around pelvis, specifically, bilaterally, 4th lumbar area, unilaterally on the left side. Also changing amount of weight at 0, 4, 6 and 8 kg.
Interventions
Wearing belt around waist with various weights attached.
Eligibility Criteria
You may qualify if:
- Willing to commit to the full experimental session
You may not qualify if:
- Functionally relevant lower limb musculoskeletal injury
- Functionally relevant osteoarthritis and weight bearing restrictions
- Severe respiratory problems that restrict the wearer from using a metabolic rate apparatus
- Patients with cardiac issues may be included, but the cardiac issue will be noted in the health history questionnaire
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of Texas at Austin
Austin, Texas, 78712, United States
Related Publications (1)
Normand MA, Lee J, Su H, Sulzer JS. The effect of hip exoskeleton weight on kinematics, kinetics, and electromyography during human walking. J Biomech. 2023 May;152:111552. doi: 10.1016/j.jbiomech.2023.111552. Epub 2023 Mar 22.
PMID: 37004392DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- James Sulzer
- Organization
- MetroHealth Hospital
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- BASIC SCIENCE
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 11, 2021
First Posted
November 15, 2021
Study Start
October 7, 2021
Primary Completion
May 6, 2022
Study Completion
May 6, 2022
Last Updated
November 29, 2023
Results First Posted
November 29, 2023
Record last verified: 2023-11