Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Smartphone Accelerometry for Gait Analysis in Children With Unilateral Spastic Cerebral Palsy

24. juli 2026 opdateret af: Deraya University

Concurrent Validity and Test-Retest Reliability of Smartphone-Embedded Accelerometry for Spatiotemporal Gait Analysis in Children With Unilateral Spastic Cerebral Palsy

This observational study will evaluate whether a smartphone's built-in accelerometer can provide accurate and repeatable measurements of walking in children with unilateral spastic cerebral palsy.

Thirty-five children aged 6 to 12 years will complete two walking trials along a 10-meter indoor walkway at their usual comfortable speed. During each trial, a smartphone will be secured over the lower back at the L4-L5 level to record body acceleration using the Phyphox application. At the same time, a video camera will record the child's walking for analysis using Kinovea software.

Measurements obtained from the smartphone will be compared with measurements obtained from video analysis. The study will assess walking velocity, cadence, stride timing, and gait asymmetry. The two repeated walking trials will also be used to determine whether the smartphone measurements are consistent when the test is repeated during the same session.

The study does not involve any treatment or change to the child's usual medical or physical therapy care. The purpose is to determine whether smartphone-based gait assessment may be a practical, low-cost method for evaluating walking in children with unilateral spastic cerebral palsy.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Children with unilateral spastic cerebral palsy may have differences in walking speed, step timing, cadence, and symmetry between the affected and unaffected lower limbs. Instrumented gait laboratories can provide detailed gait measurements, but they may be expensive, time-consuming, or unavailable in many clinical settings. Smartphones contain built-in motion sensors that may offer a simpler and more accessible method of measuring gait.

This methodological validation study will examine the concurrent validity and intra-session test-retest reliability of smartphone-embedded linear accelerometry for the assessment of spatiotemporal gait parameters in children with unilateral spastic cerebral palsy.

A convenience sample of 35 children will be recruited from the Deraya University outpatient clinic. Eligible participants will be 6 to 12 years of age, have a clinical diagnosis of unilateral spastic cerebral palsy, and be classified as Gross Motor Function Classification System level I or II.

Each participant will attend one assessment session. A Samsung Galaxy A7 smartphone will be secured horizontally over the lower back at the L4-L5 vertebral level using an adjustable waist belt. This location is intended to approximate the body's center of mass. The smartphone's internal linear accelerometer will record movement data using the Phyphox application.

Participants will walk at a comfortable, self-selected speed along a flat, unobstructed 10-meter indoor walkway. At the same time, a high-definition video camera mounted on a stable tripod will record the walking trial from a perpendicular distance of approximately 3 meters. The video recordings will be analyzed frame by frame using Kinovea software and will serve as the reference method.

Each child will complete two identical walking trials during the same session. The trials will be separated by a seated rest period of approximately 5 to 10 minutes to reduce fatigue. No therapeutic intervention will be administered, and the child's usual medical or physical therapy care will not be changed.

Data obtained from the smartphone accelerometer and the video analysis will be used to calculate walking velocity, cadence, stride timing, and gait asymmetry. Smartphone-derived measurements will be compared with the corresponding Kinovea-derived measurements to evaluate concurrent validity. Measurements from the first and second walking trials will also be compared to evaluate intra-session test-retest reliability.

The study is intended to determine whether smartphone-based accelerometry can provide valid and repeatable gait measurements that may be useful as a practical, non-invasive, and low-cost clinical assessment method for children with unilateral spastic cerebral palsy.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

35

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Menia Governorate
      • Minya, Menia Governorate, Egypten
        • Rekruttering
        • Deraya university, faculty of pharmacy
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn

Tager imod sunde frivillige

Ingen

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

A convenience sample of children aged 6 to 12 years with a clinical diagnosis of unilateral spastic cerebral palsy will be recruited from the Deraya University outpatient clinic. Eligible participants will be classified as Gross Motor Function Classification System level I or II and must be able to walk independently for 10 meters without physical assistance or handheld mobility aids. Participants must also be able to understand and follow simple verbal instructions required for gait assessment.

Beskrivelse

Inclusion criteria:

  1. Clinical diagnosis of unilateral spastic cerebral palsy.
  2. Chronological age ranging from 6 to 12 years.
  3. Gross Motor Function Classification System (GMFCS) Level I or II (capable of walking 10 meters independently without physical support or handheld mobility aids).
  4. Ability to comprehend and execute simple verbal instructions during clinical evaluation.

Exclusion criteria:

  1. History of lower extremity corrective orthopedic surgery or joint casting within the preceding 12 months.
  2. Botulinum Toxin Type A injections administered to the lower limbs within the past 6 months.
  3. Fixed structural bony deformities or rigid joint contractures in the lower extremities.
  4. Severe, uncorrected visual or auditory deficits that threaten safety or test execution

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Children With Unilateral Spastic Cerebral Palsy
A convenience sample of 35 children aged 6 to 12 years with unilateral spastic cerebral palsy and Gross Motor Function Classification System levels I or II. All participants will complete two 10-meter walking trials while smartphone accelerometry and simultaneous 2-dimensional video gait analysis are performed. No treatment will be assigned or modified.
A Samsung Galaxy A7 smartphone will be secured horizontally over the participant's lower back at the L4-L5 vertebral level using an adjustable waist belt. The smartphone's built-in linear accelerometer and the Phyphox application will record movement during two 10-meter walking trials performed at a comfortable, self-selected speed. Simultaneous video recordings will be analyzed using Kinovea software as the reference method. Walking velocity, cadence, stride timing, and gait asymmetry will be calculated. The two trials will be separated by a seated rest period of 5 to 10 minutes.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Walking Velocity Measured by Smartphone Accelerometry
Tidsramme: Baseline
Walking velocity, expressed in meters per second, will be calculated by dividing the 10-meter walking distance by the time required to complete the walkway. Velocity derived from smartphone linear accelerometry using the Phyphox application will be compared with velocity obtained from frame-by-frame 2-dimensional video analysis using Kinovea software.
Baseline
Cadence Measured by Smartphone Accelerometry
Tidsramme: Baseline
Cadence, expressed as steps per minute, will be calculated from acceleration peak intervals recorded by the smartphone using the Phyphox application. Smartphone-derived cadence will be compared with cadence determined by visual frame-by-frame analysis of the simultaneous Kinovea video recording.
Baseline
Gait Asymmetry Index
Tidsramme: Baseline
The Gait Asymmetry Index will be calculated using temporal gait data from the affected and unaffected lower limbs. The index will quantify the degree of asymmetry between the two sides. Smartphone-derived asymmetry values will be compared with values obtained from the simultaneous Kinovea video analysis. Higher values indicate greater gait asymmetry.
Baseline

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. juli 2026

Primær færdiggørelse (Anslået)

1. november 2026

Studieafslutning (Anslået)

1. december 2026

Datoer for studieregistrering

Først indsendt

16. juli 2026

Først indsendt, der opfyldte QC-kriterier

24. juli 2026

Først opslået (Faktiske)

28. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

28. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • PT-USCP-GAIT-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .