TY - JOUR
T1 - Predictivity of daily gait speed using tri-axial accelerometers for two-year incident disability among Japanese older adults
AU - Takayanagi, Naoto
AU - Sudo, Motoki
AU - Yamashiro, Yukari
AU - Chiba, Ippei
AU - Lee, Sangyoon
AU - Niki, Yoshifumi
AU - Shimada, Hiroyuki
N1 - Funding Information:
We thank the research and healthcare staff involved in this study for their assistance with the assessments, including Sungchul Lee, Seongryu Bae, Songee Jung, Keitaro Makino, Kazuhiro Harada, and Kenji Harada (members of the National Center for Geriatrics and Gerontology), and members of the Health Promotion Group in Takahama City. This work was supported by Research Funding for Longevity Sciences (Grant Number: 27-22) from the National Center for Geriatrics and Gerontology, Grant-in-Aid for Scientific Research (A) (KAKENHI grant number: 26242059), and expenses for R&D commissioned from Takahama City. This work was conducted in association with the Kao Corporation and ALCARE Corporation. The sponsors of the study had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Funding Information:
We thank the research and healthcare staff involved in this study for their assistance with the assessments, including Sungchul Lee, Seongryu Bae, Songee Jung, Keitaro Makino, Kazuhiro Harada, and Kenji Harada (members of the National Center for Geriatrics and Gerontology), and members of the Health Promotion Group in Takahama City. This work was supported by Research Funding for Longevity Sciences (Grant Number: 27-22) from the National Center for Geriatrics and Gerontology, Grant-in-Aid for Scientific Research (A) (KAKENHI grant number: 26242059), and expenses for R&D commissioned from Takahama City. This work was conducted in association with the Kao Corporation and ALCARE Corporation. The sponsors of the study had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.
Funding Information:
N.T., M.S., Y.Y., and Y.N. are employed by the Kao Corporation. I.C. has no competing interests to disclose. S.L. and H.S. have received research grants from both the Kao Corporation and ALCARE Corporation.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Gait speed is an important indicator of functional decline in older adults. Recently, daily gait speed has been assessed using accelerometers. However, it is unclear whether this parameter can predict the decline in functional abilities. This study investigates whether daily gait speed can be a predictor of incident disability risk as well as in-laboratory gait speed. A sample of 1860 older adults (Male: 728, Female: 1132; 70.1 ± 6.2 years) were instructed to wear accelerometers on the waist. The association between daily gait speed for two weeks and incident disability during a two-year period was analyzed by using the cut-off value for screening prefrailty in the previous study (106.3 cm/s). Furthermore, the associations with in-laboratory gait speed (cut-off value: 100 cm/s), number of steps (cut-off value: 6342.2 steps/day), and incident disability were also analyzed. Cox proportional hazards analysis showed a significant hazard ratio of low daily gait speed (HR, 2.97; p = 0.02) comparable to that of low in-laboratory gait speed (HR: 2.53; p = 0.01). Conversely, the number of steps had no significant association with incident disability (HR: 1.99; p = 0.12). These results suggest that daily gait speed can be a predictor of incident disability risk in older adults.
AB - Gait speed is an important indicator of functional decline in older adults. Recently, daily gait speed has been assessed using accelerometers. However, it is unclear whether this parameter can predict the decline in functional abilities. This study investigates whether daily gait speed can be a predictor of incident disability risk as well as in-laboratory gait speed. A sample of 1860 older adults (Male: 728, Female: 1132; 70.1 ± 6.2 years) were instructed to wear accelerometers on the waist. The association between daily gait speed for two weeks and incident disability during a two-year period was analyzed by using the cut-off value for screening prefrailty in the previous study (106.3 cm/s). Furthermore, the associations with in-laboratory gait speed (cut-off value: 100 cm/s), number of steps (cut-off value: 6342.2 steps/day), and incident disability were also analyzed. Cox proportional hazards analysis showed a significant hazard ratio of low daily gait speed (HR, 2.97; p = 0.02) comparable to that of low in-laboratory gait speed (HR: 2.53; p = 0.01). Conversely, the number of steps had no significant association with incident disability (HR: 1.99; p = 0.12). These results suggest that daily gait speed can be a predictor of incident disability risk in older adults.
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UR - http://www.scopus.com/inward/citedby.url?scp=85132081708&partnerID=8YFLogxK
U2 - 10.1038/s41598-022-14304-9
DO - 10.1038/s41598-022-14304-9
M3 - Article
C2 - 35710722
AN - SCOPUS:85132081708
SN - 2045-2322
VL - 12
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 10067
ER -