The validity and reliability of the OneStep smartphone application under various gait conditions in healthy adults with feasibility in clinical practice

The validity and reliability of the OneStep smartphone application under various gait conditions in healthy adults with feasibility in clinical practice

Abstract Objective Primary purpose of this study was to determine the validity and reliability of the OneStep smartphone application in healthy adults. Secondary purpose was to determine the feasibility of measuring gait dysfunction, limitation in spatiotemporal characteristics, longitudinally in pa...

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Bibliographic Details
Published in:Journal of orthopaedic surgery and research Vol. 17; no. 1; pp. 1 - 417
Main Authors: Christensen, Jesse C, Stanley, Ethan C, Oro, Evan G, Carlson, Hunter B, Naveh, Yuval Y, Shalita, Rotem, Teitz, Levi S
Format: Journal Article
Language:English
Published: London BioMed Central Ltd 14-09-2022
BioMed Central
BMC
Subjects:
Adults
Agreement
Arthroplasty (hip)
Arthroplasty (knee)
Body mass index
Clinical medicine
Computer software industry
Data collection
Feasibility
Fitness equipment
Gait
Hip
Laboratories
Motion analysis system
Motion capture
Older people
Orthopedics
Patients
Reliability
Sample size
Smart phones
Smartphone application
Smartphones
Validity
Walking
United Kingdom
Israel
United Kingdom > UK
Tel Aviv Israel
United States > US
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Summary:Abstract Objective Primary purpose of this study was to determine the validity and reliability of the OneStep smartphone application in healthy adults. Secondary purpose was to determine the feasibility of measuring gait dysfunction, limitation in spatiotemporal characteristics, longitudinally in patients following total hip or knee arthroplasty. Methods First objective, 20 healthy adults (mean age, 42.3 ± 19.7 years; 60% males; mean body mass index, 29.0 ± 5.2 kg/m 2 ) underwent gait analysis under four gait conditions (self-selected gait speed, fixed gait speed at 0.8 m/s, fixed gait speed at 2.0 m/s and self-selected gait speed with dual task) for the validity and reliability of the smartphone to the motion laboratory. Reliability was determined by intraclass correlation coefficients. Validity was determined by Pearson correlations. Agreement was assessed by the Bland–Altman method. Second objective, 12 additional patients with total hip or knee arthroplasty (mean age, 58.7 ± 6.5 years; 58% males; mean body mass index, 28.9 ± 5.8 kg/m 2 ) were measured at 2- and 10 weeks postoperatively. The smartphone application was used to evaluate change in gait dysfunction over time within the patients’ own environment using paired t test. Results The smartphone application demonstrated moderate-to-excellent intraclass correlation coefficients for reliability between-system (ICC range, 0.56–0.99), -limb (ICC range, 0.62–0.99) and -device (ICC range, 0.61–0.96) for gait analysis of healthy adults. Pearson correlations were low-to-very high between methods ( r range, 0.45–0.99). Bland–Altman analysis revealed relative underestimation of spatiotemporal variables by the smartphone application compared to the motion system. For patients following total hip or knee arthroplasty, gait analysis using the OneStep application demonstrated significant improvement ( p  < 0.001, Cohen’s d  > 0.95) in gait dysfunction between 2- and 10 weeks postoperatively. Conclusion The smartphone application can be a valid, reliable and feasible alternative to motion laboratories in evaluating deficits in gait dysfunction in various environments and clinical settings.
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ISSN:1749-799X
1749-799X
DOI:10.1186/s13018-022-03300-4