Comparative Analysis of Gait Speed Measurement Protocols: Static Start Versus Dynamic Start in a Cross-Sectional Study Using Light Detection and Ranging.
S Ji, H-W Jung, S Yoon, H Roh, M Kim, H Jung, R Jang, H Ha, J Y Baek, I-Y Jang, E Lee
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引用次数: 0
Abstract
Background: There is currently no standardized protocol for the measurement of gait speed in older adults, particularly regarding the choice between static versus dynamic start.
Objectives: This study aimed to assess the impact of removing the initial phase on gait speed measurement and compare the correlation of different measurement methods with other physical performance metrics.
Design: A cross-sectional study.
Setting: A geriatric clinic in a tertiary hospital in Seoul, Korea.
Participants: Adults aged 65 years or older who underwent physical performance examinations during comprehensive geriatric assessments (n = 511).
Measurements: A one-dimensional light detection and ranging device was used to obtain real-time gait signal data and measure the participants' gait speed. Descriptive statistics were obtained for the acceleration phase. Various lengths of the initial phase were removed to determine the point at which gait speed plateaued. Correlations between four-meter gait speeds, with different initial phase lengths, and chair stand and balance test results were examined.
Results: The mean ± standard deviation of the acceleration phase (m) was 0.92 ± 0.51. The removal of various initial phase lengths showed that 2 m gait speed based on dynamic start (0.5 m) significantly differed from static start (0.7 m/s versus 1.05 m/s, p<0.001). Gait speed showed an increase with the removal of longer initial phases but plateaued after removing 1 meter. This change lacked clinical significance after removing 0.5 meters. Dynamic start gait speed exhibited superior discriminative ability in chair stand and balance tests compared to static start gait speed.
Conclusion: Static start underestimates gait speed, while dynamic start aligns better with other physical performance results. An acceleration phase of 0.5 to 1 meter appears sufficient, but further studies are needed to optimize gait measurement methods.
期刊介绍：
The Journal of Frailty & Aging is a peer-reviewed international journal aimed at presenting articles that are related to research in the area of aging and age-related (sub)clinical conditions. In particular, the journal publishes high-quality papers describing and discussing social, biological, and clinical features underlying the onset and development of frailty in older persons. The Journal of Frailty & Aging is composed by five different sections: - Biology of frailty and aging In this section, the journal presents reports from preclinical studies and experiences focused at identifying, describing, and understanding the subclinical pathophysiological mechanisms at the basis of frailty and aging. - Physical frailty and age-related body composition modifications Studies exploring the physical and functional components of frailty are contained in this section. Moreover, since body composition plays a major role in determining physical frailty and, at the same time, represents the most evident feature of the aging process, special attention is given to studies focused on sarcopenia and obesity at older age. - Neurosciences of frailty and aging The section presents results from studies exploring the cognitive and neurological aspects of frailty and age-related conditions. In particular, papers on neurodegenerative conditions of advanced age are welcomed. - Frailty and aging in clinical practice and public health This journal’s section is devoted at presenting studies on clinical issues of frailty and age-related conditions. This multidisciplinary section particularly welcomes reports from clinicians coming from different backgrounds and specialties dealing with the heterogeneous clinical manifestations of advanced age. Moreover, this part of the journal also contains reports on frailty- and age-related social and public health issues. - Clinical trials and therapeutics This final section contains all the manuscripts presenting data on (pharmacological and non-pharmacological) interventions aimed at preventing, delaying, or treating frailty and age-related conditions.The Journal of Frailty & Aging is a quarterly publication of original papers, review articles, case reports, controversies, letters to the Editor, and book reviews. Manuscripts will be evaluated by the editorial staff and, if suitable, by expert reviewers assigned by the editors. The journal particularly welcomes papers by researchers from different backgrounds and specialities who may want to share their views and experiences on the common themes of frailty and aging.The abstracting and indexing of the Journal of Frailty & Aging is covered by MEDLINE (approval by the National Library of Medicine in February 2016).
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