An evaluation of the 30-s chair stand test in older adults: frailty detection based on kinematic parameters from a single inertial unit

A growing interest in frailty syndrome exists because it is regarded as a major predictor of co-morbidities and mortality in older populations. Nevertheless, frailty assessment has been controversial, particularly when identifying this syndrome in a community setting. Performance tests such as the 3...

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Bibliographic Details
Published in:Journal of neuroengineering and rehabilitation 2013-08, Vol.10 (1), p.86-86, Article 86
Main Authors: Millor, Nora, Lecumberri, Pablo, Gómez, Marisol, Martínez-Ramírez, Alicia, Izquierdo, Mikel
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Aging
Analysis
Biomechanical Phenomena
Exercise Test - methods
Female
Frail Elderly
Frailty
Health aspects
Health sciences
Human mechanics
Humans
Kinematics
Male
Middle Aged
Monitoring, Physiologic - methods
Movement - physiology
Older people
Physiological aspects
Physiological research
Signal processing
Studies
Torso
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Summary:A growing interest in frailty syndrome exists because it is regarded as a major predictor of co-morbidities and mortality in older populations. Nevertheless, frailty assessment has been controversial, particularly when identifying this syndrome in a community setting. Performance tests such as the 30-second chair stand test (30-s CST) are a cornerstone for detecting early declines in functional independence. Additionally, recent advances in body-fixed sensors have enhanced the sensors' ability to automatically and accurately evaluate kinematic parameters related to a specific movement performance. The purpose of this study is to use this new technology to obtain kinematic parameters that can identify frailty in an aged population through the performance the 30-s CST. Eighteen adults with a mean age of 54 years, as well as sixteen pre-frail and thirteen frail patients with mean ages of 78 and 85 years, respectively, performed the 30-s CST while their trunk movements were measured by a sensor-unit at vertebra L3. Sit-stand-sit cycles were determined using both acceleration and orientation information to detect failed attempts. Movement-related phases (i.e. impulse, stand-up, and sit-down) were differentiated based on seat off and seat on events. Finally, the kinematic parameters of the impulse, stand-up and sit-down phases were obtained to identify potential differences across the three frailty groups. For the stand-up and sit-down phases, velocity peaks and "modified impulse" parameters clearly differentiated subjects with different frailty levels (p 
ISSN:1743-0003
1743-0003
DOI:10.1186/1743-0003-10-86