Adaptivt hofteeksoskeleton til forbedring af slagtilfælde
Drevet hofteeksoskelet til slagtilfældeoverlevere med gangbesvær
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Aaron Young, Ph.D.
- Telefonnummer: 404-385-5306
- E-mail: aaron.young@me.gatech.edu
Undersøgelse Kontakt Backup
- Navn: Kinsey R Herrin, MSPO, C/LPO
- Telefonnummer: 470-578-7600
- E-mail: kinsey.herrin@me.gatech.edu
Studiesteder
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Georgia
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Atlanta, Georgia, Forenede Stater, 30332
- Exoskeleton and Prosthetic Intelligent Controls Lab
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
- Tidligere slagtilfælde med en læges godkendelse til sikkert at udføre de eksperimentelle aktiviteter.
- Slagtilfældet skal være indtruffet mindst 6 måneder før undersøgelsens involvering.
- I alderen 18-85 år.
- Score højere end 17 på mini-mental state eksamen (MMSE).
- Kan sidde ustøttet i minimum 30 sekunder.
- Kan følge en 3-trins kommando.
- Skal kunne gå uden støtte (en skinne efter behov er tilladt), med en ganghastighed på mindst 0,4 m/s (begrænset ambulatorisk hastighed i lokalsamfundet).
- Skal kunne gå i mindst 6 minutter.
- Skal være villig og i stand til at deltage i et 1-4 timers eksperiment, med pauser påkrævet regelmæssigt og efter behov.
- Skal kunne forflytte sig (sidde-til-stå og stå-til-siddende) uden ekstern støtte (armlænsstøtte tilladt).
- Skal kunne ambulere over små skråninger (3 grader) og få trin (6 trin).
Ekskluderingskriterier:
- Tab af følelse i benene, en komplet rygmarvsskade, historie med hjernerystelse inden for de sidste 6 måneder, historie med alvorlige kardiovaskulære tilstande, alvorlig gigt eller ortopædiske problemer, der ville begrænse fuld deltagelse i undersøgelsen.
- Diagnose af andre neurologiske lidelser såsom Parkinsons sygdom, amyotrofisk lateral sklerose (ALS), multipel sklerose (MS), demens, historie med hovedtraume, som ikke er fuldt løst (pr. deltagerrapport), amputation af underekstremiteter, ikke-helende sår i en underekstremitet, nyredialyse eller sluttilstandsleversygdom, juridisk blindhed eller alvorlig synsnedsættelse.
- Brug af en pacemaker eller have metalimplantater i hovedregionen eller medicin, der sænker anfaldstærsklerne.
- Til sidst, hvis du deltager i en anden klinisk undersøgelse og/eller din fysiske tilstand er begrænset til at udføre forskellige opgaver, vil du efter Principal Investigator (PI's opfattelse) sandsynligvis påvirke undersøgelsesresultatet eller forvirre resultaterne, vil du blive udelukket fra Studiet.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Eksperimentel: Hip Exoskeleton for Stroke Gait Assistance
This study will be conducted on a sample population of stroke subjects (single arm).
Subjects will be tested with the hip exoskeleton and baseline.
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The intervention is an experimental robotic hip exoskeleton in a powered state providing assistance to the user that has been previously developed by the team.
It is used to improve walking gait performance.
The intervention will serve as a baseline where participants will be asked to perform the tasks without wearing a hip exoskeleton.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Temporal Convolutional Network (TCN) Model Performance (Joint Moment Accuracy)
Tidsramme: 5 Days
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This outcome represents the error with which the deep learning model embedded into our hip exoskeleton's microprocessor predicts hip joint moments in stroke patients.
Specifically, the coefficient of determination (R²) is computed between the predicted hip joint moments and the ground truth measurements.
Ground truth measurements are obtained from a laboratory-grade force plate system and inverse dynamics calculations.
For these measures, higher R² values (closer to 1.0) indicate better correlation between predicted and actual hip joint moments.
This metric provides a comprehensive assessment of the exoskeleton's ability to accurately estimate hip joint moments in stroke patients during tasks, with improved outcomes representing better assistive capabilities for the user.
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5 Days
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Metabolic Cost for Level Ground Walking
Tidsramme: 5 days
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Metabolic energy expenditure will be quantified using an indirect calorimetry system (Parvo Medics, UT) that measures oxygen consumption (VO₂) and carbon dioxide production (VCO₂) during experimental tasks.
Measurements will be collected from each participant during a 5-minute baseline standing period followed by level ground walking trials under three conditions: without the exoskeleton, with the exoskeleton in a powered state, and with the exoskeleton in an unpowered state.
Metabolic cost will be calculated from respiratory gas exchange data using standard equations for energy expenditure.
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5 days
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Biological Joint Work - Level Walking
Tidsramme: 5 days
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Mechanical work performed by the lower limb joints during level walking will be quantified through biomechanical analysis of motion capture data.
Joint moments and angular velocities will be derived through inverse dynamics and kinematics, respectively.
Joint power, calculated as the product of joint moment and angular velocity, will be integrated with respect to time using trapezoidal integration to determine mechanical work.
Positive work will be calculated by integrating positive joint powers, providing comprehensive quantification of joint energy generation at each joint during level walking.
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5 days
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Biological Joint Work - Incline Walking
Tidsramme: 5 days
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Mechanical work performed by the lower limb joints will be quantified during incline walking through biomechanical analysis of motion capture data.
Joint moments and angular velocities will be derived through inverse dynamics and kinematics, respectively.
Joint power, calculated as the product of joint moment and angular velocity, will be integrated with respect to time using trapezoidal integration to determine mechanical work.
Positive work will be calculated by integrating positive joint powers, providing comprehensive quantification of joint energy generation at each joint during the incline walking.
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5 days
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Biological Joint Work - Stair Ascent
Tidsramme: 5 days
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Mechanical work performed by the lower limb joints will be quantified during stair ascent through biomechanical analysis of motion capture data.
Joint moments and angular velocities will be derived through inverse dynamics and kinematics, respectively.
Joint power, calculated as the product of joint moment and angular velocity, will be integrated with respect to time using trapezoidal integration to determine mechanical work.
Positive work will be calculated by integrating positive joint powers, providing comprehensive quantification of joint energy generation at each joint during the stair ascent task.
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5 days
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Biological Joint Work - Sit to Stand
Tidsramme: 5 days
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Mechanical work performed by the lower limb joints will be quantified during sit to stand through biomechanical analysis of motion capture data.
Joint moments and angular velocities will be derived through inverse dynamics and kinematics, respectively.
Joint power, calculated as the product of joint moment and angular velocity, will be integrated with respect to time using trapezoidal integration to determine mechanical work.
Positive work will be calculated by integrating positive joint powers, providing comprehensive quantification of joint energy generation at each joint during the sit to stand task.
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5 days
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Biological Joint Work - go and Grab
Tidsramme: 5 days
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Mechanical work performed by the lower limb joints will be quantified during a go and grab task through biomechanical analysis of motion capture data.
In the go and grab task, participants take several steps, lean forward, and pick up a weighted object from a low surface just above ground level.
Joint moments and angular velocities will be derived through inverse dynamics and kinematics, respectively.
Joint power, calculated as the product of joint moment and angular velocity, will be integrated with respect to time using trapezoidal integration to determine mechanical work.
Positive work will be calculated by integrating positive joint powers, providing comprehensive quantification of joint energy generation at each joint during the go and grab task.
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5 days
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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10 Meter Walk Test (Self-selected)
Tidsramme: 5 days
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This will be measured as the participant walks a distance of 10 meters across a gait mat at their self-selected (or comfortable) walking speed.
This measure will be recorded in seconds with lower values indicating faster speed and higher values indicating slower speeds.
Self-selected walking speed is highly correlated with functional ability and dependence.
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5 days
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The Timed up and go (TUG)
Tidsramme: 5 days
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This will be measured as the time it takes a participant to rise from a chair, walk three meters at a self-selected pace, turn, walk back to the chair and sit down.
The total time taken will be measured in seconds with longer times indicating poorer physical performance.
This test assesses functional mobility and dynamic balance.
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5 days
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6 Minute Walk Test
Tidsramme: 5 days
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This is a measurement of endurance and functional ability that assesses the participants ability to walk a distance over a time period of 6 minutes.
It is measured in distance with greater distances indicating improved levels of endurance and functional ability.
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5 days
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Modified Stroke Impact Scale
Tidsramme: 5 days
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The Modified Stroke Impact Scale (SIS) is a self-report questionnaire that evaluates disability and health-related quality of life after stroke.
Each item is rated in a 5-point Likert scale in terms of the difficulty the patient has experienced in completing each item.
Scores are transformed to a 0-100 scale, with 0 indicating the poorest perceived health status and 100 indicating the best, across domains of disability and health-related quality of life.
Higher scores are indicative of improved quality of life.
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5 days
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Modified Activities-specific Balance Confidence
Tidsramme: 5 days
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The modified activities specific balance confidence is a self-report measure of balance confidence in performing various activities without losing balance or experiencing a sense of unsteadiness.
Confidence is rated for various activities on a scale from 0% to 100% for each activity, with 0% indicative of no confidence and 100% indicative of complete confidence.
Scores reflect balance confidence with higher scores indicative of improved balance confidence.
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5 days
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Fast Self-selected Walking Speed
Tidsramme: 5 days
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This will be measured as the participant walks on a treadmill at their fastest and safest walking speed.
This measure will be recorded in meters/seconds with higher values indicating faster speed and lower values indicating slower speeds.
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5 days
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Aaron Young, Ph.D., Georgia Institute of Technology
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- H18182
- R03HD097740 (U.S. NIH-bevilling/kontrakt)
- DP2HD111709 (U.S. NIH-bevilling/kontrakt)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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