Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults.
<h4>Background</h4>The Figure-of-Eight Walk Test (F8WT) can assess straight- and curved-path walking ability, but the validity and reliability of automated measurement of the F8WT using digital device has not yet been studied. The aim of this study was to verify the validity (method comp...
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2025-01-01
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| Online Access: | https://doi.org/10.1371/journal.pone.0316612 |
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| author | Hyun-Ho Kong Kwangsoo Shin Dong-Seok Yang Hye-Young Gu Hyeon-Seong Joo Hyun-Chul Shon |
| author_facet | Hyun-Ho Kong Kwangsoo Shin Dong-Seok Yang Hye-Young Gu Hyeon-Seong Joo Hyun-Chul Shon |
| author_sort | Hyun-Ho Kong |
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| description | <h4>Background</h4>The Figure-of-Eight Walk Test (F8WT) can assess straight- and curved-path walking ability, but the validity and reliability of automated measurement of the F8WT using digital device has not yet been studied. The aim of this study was to verify the validity (method comparison) and test-retest reliability of the automated FW8T (aFW8T) using a digital device based on image analysis by comparing the results of the aF8WT with those of the manual F8WT (mF8WT).<h4>Methods</h4>Community-dwelling older adults underwent the mF8WT performed by a physiotherapist and the aF8WT using the Digital Senior Fitness Test system. To verify the test-retest reliability, the aF8WT was administered again to a randomly selected group of participants one week after the baseline test. The intraclass correlation coefficient (ICC) and Pearson's correlation analysis were used to verify the degree of agreement between the results of and correlation between the mF8WT and aF8WT, respectively. The 95% confidence interval (CI) of the limits of agreement (LoA) was obtained using Bland-Altman analysis.<h4>Results</h4>The analysis included 83 participants (mean age 71.6 ± 4.7 years). The participants' mF8WT and aF8WT results were 29.1 ± 4.9 and 29.8 ± 4.9 seconds, respectively. Pearson's correlation analysis showed a very strong correlation between the mF8WT and aF8WT results with r = 0.91 (p < 0.001), and the ICC between the mF8WT and aF8WT results was 0.95 (0.91-0.97), showing excellent agreement. The 95% CI of the LoA was -0.7 (-4.8 to 3.3) seconds in the Bland-Altman analysis. In an analysis of the test-retest reliability of the aF8WT, participants' aF8WT results were 30.9 ± 4.7 seconds (baseline) and 29.6 ± 4.9 seconds (retest), with an ICC of 0.94 (0.81-0.98, p < 0.001), indicating excellent reliability.<h4>Conclusion</h4>Automated measurement of the F8WT using a digital device showed excellent validity and reliability. The aF8WT can be used to assess and monitor the walking ability of community-dwelling older adults. |
| format | Article |
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| publishDate | 2025-01-01 |
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| spelling | doaj-art-4ba130f3ad294f3db9c7fbae26f0570c2025-08-20T03:48:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01202e031661210.1371/journal.pone.0316612Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults.Hyun-Ho KongKwangsoo ShinDong-Seok YangHye-Young GuHyeon-Seong JooHyun-Chul Shon<h4>Background</h4>The Figure-of-Eight Walk Test (F8WT) can assess straight- and curved-path walking ability, but the validity and reliability of automated measurement of the F8WT using digital device has not yet been studied. The aim of this study was to verify the validity (method comparison) and test-retest reliability of the automated FW8T (aFW8T) using a digital device based on image analysis by comparing the results of the aF8WT with those of the manual F8WT (mF8WT).<h4>Methods</h4>Community-dwelling older adults underwent the mF8WT performed by a physiotherapist and the aF8WT using the Digital Senior Fitness Test system. To verify the test-retest reliability, the aF8WT was administered again to a randomly selected group of participants one week after the baseline test. The intraclass correlation coefficient (ICC) and Pearson's correlation analysis were used to verify the degree of agreement between the results of and correlation between the mF8WT and aF8WT, respectively. The 95% confidence interval (CI) of the limits of agreement (LoA) was obtained using Bland-Altman analysis.<h4>Results</h4>The analysis included 83 participants (mean age 71.6 ± 4.7 years). The participants' mF8WT and aF8WT results were 29.1 ± 4.9 and 29.8 ± 4.9 seconds, respectively. Pearson's correlation analysis showed a very strong correlation between the mF8WT and aF8WT results with r = 0.91 (p < 0.001), and the ICC between the mF8WT and aF8WT results was 0.95 (0.91-0.97), showing excellent agreement. The 95% CI of the LoA was -0.7 (-4.8 to 3.3) seconds in the Bland-Altman analysis. In an analysis of the test-retest reliability of the aF8WT, participants' aF8WT results were 30.9 ± 4.7 seconds (baseline) and 29.6 ± 4.9 seconds (retest), with an ICC of 0.94 (0.81-0.98, p < 0.001), indicating excellent reliability.<h4>Conclusion</h4>Automated measurement of the F8WT using a digital device showed excellent validity and reliability. The aF8WT can be used to assess and monitor the walking ability of community-dwelling older adults.https://doi.org/10.1371/journal.pone.0316612 |
| spellingShingle | Hyun-Ho Kong Kwangsoo Shin Dong-Seok Yang Hye-Young Gu Hyeon-Seong Joo Hyun-Chul Shon Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. PLoS ONE |
| title | Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. |
| title_full | Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. |
| title_fullStr | Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. |
| title_full_unstemmed | Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. |
| title_short | Digital assessment of walking ability: Validity and reliability of the automated figure-of-eight walk test in older adults. |
| title_sort | digital assessment of walking ability validity and reliability of the automated figure of eight walk test in older adults |
| url | https://doi.org/10.1371/journal.pone.0316612 |
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