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Optimization of Hip-exoskeleton Weight Attributes

NCT ID: NCT05120115

Last Updated: 2023-11-29

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

21 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-10-07

Study Completion Date

2022-05-06

Brief Summary

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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.

Detailed Description

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The purpose of this study is to examine how the amount and distribution of weight on the pelvis affects how people walk. The investigators two factors, weight and placement. They are examining how these factors affect muscle activation, joint motions and foot forces. The investigators plan to recruit 40 healthy adult individuals. Each of the 20 experimental conditions (3x3 factorial and one control condition with no weight) will be recorded immediately in a single session. The investigators hypothesize that weight amount, gait speed and weight distribution will all affect how people walk, which will lead towards optimized design of hip exoskeletons.

Conditions

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Healthy Gait, Frontal

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Weight distribution and placement

Changing 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.

Group Type EXPERIMENTAL

Weight belt

Intervention Type OTHER

Wearing belt around waist with various weights attached.

Interventions

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Weight belt

Wearing belt around waist with various weights attached.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Willing to commit to the full experimental session

Exclusion Criteria

* 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
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

NIH

Sponsor Role collaborator

University of Texas at Austin

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Texas at Austin

Austin, Texas, United States

Site Status

Countries

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United States

References

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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.

Reference Type DERIVED
PMID: 37004392 (View on PubMed)

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

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R01HD100416

Identifier Type: NIH

Identifier Source: secondary_id

View Link

STUDY00001245

Identifier Type: -

Identifier Source: org_study_id