Impaired Standing Balance in Elderly: A New Engineering Method Helps to Unravel Causes and Effects

Engelhart, Denise; Pasma, Jantsje H.; Schouten, Alfred C.; Meskers, Carel G.M.; Maier, Andrea B.; Mergner, Thomas; Kooij, Herman van der

doi:10.1016/j.jamda.2013.09.009

Cited by 44 publications

(69 citation statements)

References 43 publications

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“…In the CNS, this information is integrated based on the reliability and a motor command is sent to the muscles. The muscles contract and generate a corrective torque around each joint to keep the body in an upright position (Engelhart et al 2014a). The human balance control could be compared to robot stance control, in which typically zero moment point compensation is used.…”

Section: Introductionmentioning

confidence: 99%

Assessing Standing Balance using MIMO Closed Loop System Identification Techniques

et al. 2015

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Abstract:Human standing balance is a complex of systems, like the muscles, nervous system and sensory systems, interacting with each other in a closed loop to maintain upright stance. With age, disease and medication use these systems deteriorate, which could result in impaired balance. In this paper, it is demonstrated that multi-input-multi-output closed loop system identification techniques (MIMO-CLSIT) can be used to assess the underlying systems involved in standing balance and guide possible therapeutic options. In this study, mechanical and sensory perturbations were combined and applied simultaneously using a Balance test Room. The results demonstrate the value of MIMO-CLSIT to assess the underlying systems involved in standing balance and therefore to improve diagnosis of impaired standing balance.

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Section: Introductionmentioning

confidence: 99%

Assessing Standing Balance using MIMO Closed Loop System Identification Techniques

et al. 2015

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“…This method is based on a previous studies (Pintelon and Schoukens, 2012;Engelhart et al, 2014), where the external disturbance signals are zippered multisine. The time series of the disturbance signals, segment angles and joint torques ( , , ) were segmented in nine repetitive cycles of the disturbance signal.…”

Section: Methods 2: Interpolation (Int)mentioning

confidence: 99%

“…The multi-input-multi-output (MIMO) approach was used to estimate the ankle and hip controller according to the method described by Engelhart et al (2014) and equation 6.2 (Engelhart et al, date unknown).…”

Section: Neuromuscular Controllersmentioning

confidence: 99%

“…Therefore, our group (van der Kooij et al, 2005van Asseldonk et al, 2006;Boonstra et al, 2014b;Engelhart et al, 2014;Pasma et al, 2014b) and other groups (Johansson et al, 2001;Peterka, 2002;Kim et al, 2009Kim et al, , 2012Jeka et al, 2010;Mergner, 2010;Goodworth and Peterka, 2012) have developed and evaluated novel quantitative balance-control assessment methods based on system identification techniques to better understand the balance-control system, with the ultimate goal to improve clinical decision making. As the balance control system is dynamic (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Due to this redundancy, cause and effect remain unclear; increased stiffness can be due to altered intrinsic muscle properties or increased reflex activity, or it might be a compensation strategy and a result of the fact that the elderly change their dynamic behaviour to maintain stability. Multivariate closed-loop system identification techniques (CLSIT) (Boonstra et al, 2013;Engelhart et al, 2014) are required to unravel cause and effects. Applying multiple and specifically designed external disturbances on the human body allows the study of multi-joint coordination in standing balance.…”

Section: Introductionmentioning

confidence: 99%

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