{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Lee PA"],"funding":["NIA NIH HHS","NCI NIH HHS"],"pagination":["257"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10968134"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["11(3)"],"pubmed_abstract":["The four-meter gait speed (4MGS) is a recommended physical performance test in older adults but is challenging to implement clinically. We developed a smartphone application (App) with a four-meter ribbon for remote 4MGS testing at home. This study aimed to assess the validity and reliability of this smartphone App-based assessment of the home 4MGS. We assessed the validity of the smartphone App by comparing it against a gold standard video assessment of the 4MGS conducted by study staff visiting community-dwelling older adults and against the stopwatch-based measurement. Moreover, we assessed the test-retest reliability in two supervised sessions and three additional sessions performed by the participants independently, without staff supervision. The 4MGS measured by the smartphone App was highly correlated with video-based 4MGS (r = 0.94), with minimal differences (mean = 0.07 m/s, ± 1.96 SD = 0.12) across a range of gait speeds. The test-retest reliability for the smartphone App 4MGS was high (ICC values: 0.75 to 0.93). The home 4MGS in older adults can be measured accurately and reliably using a smartphone in the pants pocket and a four-meter strip of ribbon. Leveraging existing technology carried by a significant portion of the older adult population could overcome barriers in busy clinical settings for this well-established objective mobility test."],"journal":["Bioengineering (Basel, Switzerland)"],"pubmed_title":["Validity and Reliability of a Smartphone Application for Home Measurement of Four-Meter Gait Speed in Older Adults."],"pmcid":["PMC10968134"],"funding_grant_id":["K01 AG075252","P30 AG031679","P50 CA100707"],"pubmed_authors":["Abel G","Testa MA","Kim D","Lo OY","Manor B","Yu W","Travison T","Lee PA","Ask L","DuMontier C","Zhou J"],"additional_accession":[]},"is_claimable":false,"name":"Validity and Reliability of a Smartphone Application for Home Measurement of Four-Meter Gait Speed in Older Adults.","description":"The four-meter gait speed (4MGS) is a recommended physical performance test in older adults but is challenging to implement clinically. We developed a smartphone application (App) with a four-meter ribbon for remote 4MGS testing at home. This study aimed to assess the validity and reliability of this smartphone App-based assessment of the home 4MGS. We assessed the validity of the smartphone App by comparing it against a gold standard video assessment of the 4MGS conducted by study staff visiting community-dwelling older adults and against the stopwatch-based measurement. Moreover, we assessed the test-retest reliability in two supervised sessions and three additional sessions performed by the participants independently, without staff supervision. The 4MGS measured by the smartphone App was highly correlated with video-based 4MGS (r = 0.94), with minimal differences (mean = 0.07 m/s, ± 1.96 SD = 0.12) across a range of gait speeds. The test-retest reliability for the smartphone App 4MGS was high (ICC values: 0.75 to 0.93). The home 4MGS in older adults can be measured accurately and reliably using a smartphone in the pants pocket and a four-meter strip of ribbon. Leveraging existing technology carried by a significant portion of the older adult population could overcome barriers in busy clinical settings for this well-established objective mobility test.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2025-04-04T23:52:46.904Z","creation":"2025-04-04T23:52:46.904Z"},"accession":"S-EPMC10968134","cross_references":{"pubmed":["38534531"],"doi":["10.3390/bioengineering11030257"]}}