Gait Assessment in Parkinson's Disease: Toward an Ambulatory System for Long-Term Monitoring

Salarian, A.; Russmann, H.; Vingerhoets, François; Dehollain, Catherine; Blanc, Y.; Burkhard, Pierre; Aminian, Kamiar

doi:10.1109/tbme.2004.827933

Cited by 558 publications

(495 citation statements)

References 18 publications

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“…Based on algorithms described elsewhere [18][19][28][29], different parameters of gait and postural transition during iTUG performance were measured.…”

Section: Resultsmentioning

confidence: 99%

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

et al. 2016

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Abstract-The instrumented Timed " Up and Go" test (iTUG) has the potential for playing an important role in providing clinically useful information regarding an individual's balance and mobility that cannot be derived from the original singleoutcome Timed "Up and Go" test protocol. The purpose of this study was to determine the reliability and validity of the iTUG using body-fixed inertial sensors in people affected by stroke. For test-retest reliability analysis, 14 individuals with stroke and 25 nondisabled elderly patients were assessed. For validity analysis, an age-matched comparison of 12 patients with stroke and 12 nondisabled controls was performed. Out of the 14 computed iTUG metrics, the majority showed excellent testretest reliability expressed by high intraclass correlation coefficients (range 0.431-0.994) together with low standard error of measurement and smallest detectable difference values. BlandAltman plots demonstrated good agreement between two repeated measurements. Significant differences between patients with stroke and nondisabled controls were found in 9 of 14 iTUG parameters analyzed. Consequently, these results warrant the future application of the inertial sensor-based iTUG for the assessment of physical deficits poststroke in longitudinal study designs.

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“…Based on algorithms described elsewhere [18][19][28][29], different parameters of gait and postural transition during iTUG performance were measured.…”

Section: Resultsmentioning

confidence: 99%

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

et al. 2016

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“…The method by which temporal gait parameters 64 are derived from angular accelerations of each shank are described in detail elsewhere (see Salarian et al 2004). …”

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confidence: 99%

The effect of transcranial direct current stimulation on task processing and prioritisation during dual-task gait

et al. 2015

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2The effect of transcranial direct current stimulation on task processing and prioritisation during dual-task gait. AbstractThe relationship between cognition and gait is often explored using a dual-task gait paradigm, which represents the ability to divide cognitive resources during walking. Recent evidence has suggested that the prefrontal cortex is involved in the allocation of cognitive resources during dual-task gait, though its precise role is unclear. Here, we used anodal and cathodal transcranial direct current stimulation (tDCS) to probe the role of the prefrontal cortex in the control of stride time variability (STV), trunk RoM and cognitive task performance during dual-task gait. As task difficulty has been shown to mediate the dual-task cost, we also manipulated walking speed to see if the effects of tDCS on dual-task gait were influenced by walking difficulty. Ten adults performed a serial subtraction task when walking at either preferred walking speed or at 25% of preferred walking speed, before and after receiving tDCS of the left prefrontal cortex. Anodal tDCS reduced STV and the dual-task cost on STV, and improved cognitive task performance. Cathodal tDCS increased STV and appeared to increase the dual-task cost on STV, but did not affect cognitive task performance. There was no effect of tDCS on trunk RoM and the effects of tDCS were not mediated by walking speed. The effect of dual-task gait on stride time variability and cognitive task performance was altered by the application of tDCS, and these effects were polarity dependent. These results highlight the role of the prefrontal cortex in biasing task performance during dual-task gait and indicate that tDCS may be a useful tool for examining the role of the cortex in the control of dual-task gait.

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“…These are the time points after the mid-swing phase and before a heel-strike event. The midswing phase is characterized by positive peak of shank angular velocity [36]. and are detected from shank angular velocity.…”

Section: Walking Motion Imitation 1) Formulation Of Walking Imitatmentioning

confidence: 99%

“…and are detected from shank angular velocity. Terminal contact (TC) or toe-off event is characterized by a negative peak of shank angular velocity [36].…”

Section: Walking Motion Imitation 1) Formulation Of Walking Imitatmentioning

confidence: 99%

Imitation of Dynamic Walking with BSN for a Humanoid Robot

Teachasrisaksakul

Zhang

Yang

et al. 2015

IEEE J. Biomed. Health Inform.

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Gait Assessment in Parkinson's Disease: Toward an Ambulatory System for Long-Term Monitoring

Cited by 558 publications

References 18 publications

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

Reliability and validity of the inertial sensor-based Timed “Up and Go” test in individuals affected by stroke

The effect of transcranial direct current stimulation on task processing and prioritisation during dual-task gait

Imitation of Dynamic Walking with BSN for a Humanoid Robot

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