PMID- 38537274 OWN - NLM STAT- Publisher LR - 20240327 IS - 1538-6724 (Electronic) IS - 0031-9023 (Linking) DP - 2024 Mar 27 TI - Concurrent Validity and Reliability of Video-Based Approach to Assess Physical Function in Adults with Knee Osteoarthritis. LID - pzae039 [pii] LID - 10.1093/ptj/pzae039 [doi] AB - OBJECTIVES: The aim of this study was to determine the concurrent validity and reliability of the Osteoarthritis Research Society International recommended performance-based tests delivered by video-based in adults with knee osteoarthritis. METHODS: Thirty-two participants (aged 40 to 70 years; 15 men) undertook assessments of 4 performance-based tests via both video-based (real-time and recorded) and face-to-face approaches, on the same day. Outcome measures were performance-based test and the number of technical issues encountered. The performance-based tests included the 40-Meter Fast-Paced Walk Test (velocity, m/s), the 30-Second Chair Stand Test (number of repetitions), the Stair Climb Test (time, seconds), and the Timed "Up & Go" Test (TUG; time, seconds). The Bland-Altman limit of agreement measures, standard error of measurement (SEM), coefficient of variation (CV), minimal detectable changes (MDCs), and bias (mean difference) were employed to analyse the concurrent validity between video-based and face-to-face approaches of the performance-based tests. Reliability was measured using intraclass correlation coefficients (ICC), CV, and SEM. RESULTS: A high degree of concurrent validity for the TUG (bias = -0.22), the 30-Second Chair Stand Test (bias = -0.22), the Stair Climb Test (bias = -0.31), and the 40-Meter Fast-Paced Walk Test (bias = -0.06) was found. SEM and CV values were within the acceptable level for concurrent validity. There was a high degree of reliability demonstrated for all tests analysed. ICC measures ranged from 0.95 to 1.00 for intrarater reliability, and from 0.95 to 0.99 for interrater reliability. CONCLUSIONS: Video-based assessment of physical performance tests is a valid and reliable tool for measuring physical function among adults with knee osteoarthritis via Microsoft Teams (Microsoft Corp, Redmond, WA, USA). IMPACT: Video-based assessment is a promising public health tool to measure physical function in adults with knee osteoarthritis. CI - (c) 2024 American Physical Therapy Association. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Aily, Jessica B AU - Aily JB AUID- ORCID: 0000-0001-8618-2148 AD - Department of Physical Therapy, Universidade Federal de Sao Carlos, Sao Carlos, Sao Paulo, Brazil. FAU - da Silva, Alyssa Conte AU - da Silva AC AD - Department of Physical Therapy, Universidade Federal de Sao Carlos, Sao Carlos, Sao Paulo, Brazil. FAU - de Noronha, Marcos AU - de Noronha M AD - Community and Allied Health, La Trobe University, Bendigo Campus, Bendigo, Victoria, Australia. FAU - White, Daniel K AU - White DK AD - Department of Physical Therapy, University of Delaware, Newark, Delaware, United States of America (USA). FAU - Mattiello, Stela M AU - Mattiello SM AUID- ORCID: 0000-0001-9484-8026 AD - Department of Physical Therapy, Universidade Federal de Sao Carlos, Sao Carlos, Sao Paulo, Brazil. LA - eng PT - Journal Article DEP - 20240327 PL - United States TA - Phys Ther JT - Physical therapy JID - 0022623 SB - IM OTO - NOTNLM OT - Digital Technology OT - Knee Osteoarthritis OT - Video-Based Assessment OT - Virtual Rehabilitation EDAT- 2024/03/28 00:45 MHDA- 2024/03/28 00:45 CRDT- 2024/03/27 18:33 PHST- 2023/02/05 00:00 [received] PHST- 2023/11/04 00:00 [revised] PHST- 2024/03/28 00:45 [medline] PHST- 2024/03/28 00:45 [pubmed] PHST- 2024/03/27 18:33 [entrez] AID - 7636240 [pii] AID - 10.1093/ptj/pzae039 [doi] PST - aheadofprint SO - Phys Ther. 2024 Mar 27:pzae039. doi: 10.1093/ptj/pzae039.