Kinematics and dynamic complexity of postural transitions in frail elderly subjects.
The aim of this study was to propose a methodology allowing a detailed characterization of body sit-to-stand/stand-to-sit postural transition. Parameters characterizing the kinematics of the trunk movement during sit-to-stand (Si-St) postural transition were calculated using one initial sensor system fixed on the trunk and a data logger. Dynamic complexity of these postural transitions was estimated by fractal dimension of acceleration-angular velocity plot. We concluded that this method provides a simple and accurate tool for monitoring frail elderly and to objectively evaluate the efficacy of a rehabilitation program.
Ganea
R
R
School of Engineering, Ecole Politechnique Féderale de Lausanne (EPFL), EPFL STI-LMAM, Station 11, 1015 Lausanne, Switzerland. raluca.ganea@epfl.ch
Paraschiv-Ionescu
A
A
Salarian
A
A
Büla
C
C
Martin
E
E
Rochat
S
S
Hoskovec
C
C
Piot-Ziegler
C
C
Aminian
K
K
D000054:Acceleration; D000058:Accidental Falls / Q000517:prevention & control*; D000369:Aged, 80 and over; D000465:Algorithms; D001696:Biomechanical Phenomena / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016330:Frail Elderly; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods; D018670:Monitoring, Ambulatory / Q000295:instrumentation* / Q000379:methods; D009068:Movement / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014159:Transducers