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Research Article
Momoko Yamagata
Kobe University
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: An incorrect transfer of center of mass (CoM) to outside the base of support is a frequent cause of falls, and segmental coordination to control CoM is crucial during walking. Uncontrolled manifold (UCM) analysis is a method of examining the relation between variances in segmental coordination and the CoM stability. However, no study has investigated through a prospective cohort study how variance in segmental configurations to stabilize CoM relates to future falls. This study explored whether variances to stabilize the CoM were related to future falls.
Methods: At the baseline visit, 30 community-dwelling older adults walked 20 times on a 6-m walkway. Using kinematic data during walking, UCM analysis was performed to investigate how segmental configuration contributes to the CoM stability in the frontal plane. One year after the baseline visit, we evaluated whether the subjects experienced falls; 12 had experienced falls and 16 had not. Comparisons of variances between older adults with and without falls were conducted by covariate analysis.
Results: No significant differences in variances were found in the mediolateral direction, whereas in the vertical direction, older adults with fall experiences had a greater variance, reflecting unstable CoM, than those with no fall experiences.
Conclusions: We verified that the high variance in segmental configurations that destabilize CoM in the vertical direction was related to future falls. The variables of UCM analysis can be useful to evaluate fall risks.
Keywords
Falls, Aged, center of mass, segmental coordination, uncontrolled manifold
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CURRENT STATUS: Published
View the published article at BMC Geriatrics.
Version 1
Posted 15 Dec, 2020
No community comments so far
Editorial decision: Major revision
On 22 Jan, 2021
Reviews received
Received 24 Dec, 2020
Reviewers agreed
On 14 Dec, 2020
Reviewers invited
Invitations sent on 14 Dec, 2020
Editor assigned
On 14 Dec, 2020
Editor invited
On 11 Dec, 2020
Submission checks complete
On 11 Dec, 2020
First submitted
On 10 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Geriatrics & Gerontology
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A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
See the published version of this preprint at BMC Geriatrics.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Momoko Yamagata
Kobe University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Geriatrics.
Version 1
Posted 15 Dec, 2020
No community comments so far
Editorial decision: Major revision
On 22 Jan, 2021
Reviews received
Received 24 Dec, 2020
Reviewers agreed
On 14 Dec, 2020
Reviewers invited
Invitations sent on 14 Dec, 2020
Editor assigned
On 14 Dec, 2020
Editor invited
On 11 Dec, 2020
Submission checks complete
On 11 Dec, 2020
First submitted
On 10 Dec, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Geriatrics & Gerontology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Geriatrics.
Background: An incorrect transfer of center of mass (CoM) to outside the base of support is a frequent cause of falls, and segmental coordination to control CoM is crucial during walking. Uncontrolled manifold (UCM) analysis is a method of examining the relation between variances in segmental coordination and the CoM stability. However, no study has investigated through a prospective cohort study how variance in segmental configurations to stabilize CoM relates to future falls. This study explored whether variances to stabilize the CoM were related to future falls.
Methods: At the baseline visit, 30 community-dwelling older adults walked 20 times on a 6-m walkway. Using kinematic data during walking, UCM analysis was performed to investigate how segmental configuration contributes to the CoM stability in the frontal plane. One year after the baseline visit, we evaluated whether the subjects experienced falls; 12 had experienced falls and 16 had not. Comparisons of variances between older adults with and without falls were conducted by covariate analysis.
Results: No significant differences in variances were found in the mediolateral direction, whereas in the vertical direction, older adults with fall experiences had a greater variance, reflecting unstable CoM, than those with no fall experiences.
Conclusions: We verified that the high variance in segmental configurations that destabilize CoM in the vertical direction was related to future falls. The variables of UCM analysis can be useful to evaluate fall risks.
Figure 1
Figure 2
Figure 3
The full text of this article is available to read as a PDF.
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