Laserlight visual cueing device for freezing of gait in Parkinson’s disease: a case study of the biomechanics involved

Egerton, Chloe; McCandless, Paula; Evans, Brenda Joy; Janssen, Jessie; Richards, Jim

doi:10.3109/09593985.2015.1037874

Cited by 9 publications

(8 citation statements)

References 32 publications

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“…In recent years, wearable laser lights have been designed to deal with FOG in PD patients. However, wearable laser lights failed to rescue FOG in some previous studies ( 28 – 30 ). Our results might explain this variability properly.…”

Section: Discussionmentioning

confidence: 82%

Transverse Strips Instead of Wearable Laser Lights Alleviate the Sequence Effect Toward a Destination in Parkinson's Disease Patients With Freezing of Gait

et al. 2020

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Background: The sequence effect (SE), referring to step-to-step reduction in amplitude, is considered to lead to freezing of gait (FOG) in Parkinson's disease (PD). Visual cues may alleviate SE and help reduce freezing episodes. FOG patients show significant SE prior to turning or toward a doorway, but the SE toward a destination has not been clearly studied. Objectives: To examine the SE when approaching a destination in PD patients with FOG, and to further explore the effects of different types of visual cues on destination SE. Methods: Thirty-five PD patients were divided into a freezing (PD+FOG, n = 15) group and a non-freezing (PD-FOG, n = 20) group. Walking trials were tested under three conditions, including without cues (no-cue condition), with wearable laser lights (laser condition), and with transverse strips placed on the floor (strip condition). Kinematic data was recorded by a portable Inertial Measurement Unit (IMU) system. The destination SE and some key gait parameters were evaluated. Results: The PD+FOG group showed greater destination SE in the no-cue and laser conditions when compared to the PD-FOG group. There were no significant differences in the strip condition when comparing destination SE of the two groups. The destination SE was alleviated only by using the transverse strips on the floor. In contrast, transverse strips and wearable laser lights could increase the step length. Conclusions: The significant destination SE may explain why FOG patients are prone to freezing when heading toward their destination. Visual cues using transverse strips on the floor may be a more effective strategy for FOG rehabilitation in PD patients.

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Section: Discussionmentioning

confidence: 82%

Transverse Strips Instead of Wearable Laser Lights Alleviate the Sequence Effect Toward a Destination in Parkinson's Disease Patients With Freezing of Gait

et al. 2020

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“…In order to avoid studies with lower statistical power, 15 studies reporting samples with <10 patients were excluded. The therapies evaluated in those studies included visual cueing (laser light, staircase climbing) auditory cueing, tactile cueing, cueing exercise program, cognitive training, physical training, rTMS, and tDCS . All these approaches have been covered as well in the articles included in our review.…”

Section: Discussionmentioning

confidence: 99%

Nonpharmacological, Nonsurgical Treatments for Freezing of Gait in Parkinson's Disease: A Systematic Review

et al. 2019

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Freezing of gait is a disabling phenomenon that appears in a substantial number of Parkinson's disease (PD) patients as the disease evolves. It is considered to be one of the most relevant contributing factors to worsening of quality of life. Current pharmacological or surgical treatment options have limited efficacy. Thus, alternative nonpharmacological/nonsurgical approaches have emerged in recent years in an attempt to improve quality of life in PD. This systematic review summarizes studies of such therapies over the past 5 years. Thirty‐five studies were evaluated by use of a qualitative evaluation, while the methodological quality was assessed using validated tools. According to our results, there appear to be two broad categories of nonpharmacological therapies: those that seek a long‐lasting benefit and those that aim to achieve a transient effect to overcome the freezing of gait episode. Among the former, it is possible to differentiate between “passive” therapies, which include transcranial magnetic stimulation or transcranial direct current stimulation, and “active” therapies, which are based on different cognitive or physical training programs. Finally, “transient effect” therapies use different types of cues, such as visual, auditory, or proprioceptive stimuli, to attempt to shift the patient's habitual motor control to a goal‐directed one. In conclusion, a broad spectrum of nonpharmacological/nonsurgical approaches for freezing of gait has emerged in recent years with promising results. © 2019 International Parkinson and Movement Disorder Society

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“…To our knowledge, although studies of laser cueing on gait in PD + FOG were further explored (5,17), few studies have revealed the effects of laser cueing on gait kinematicskinetics, especially in PD + FOG. Whether laser visual cueing may alleviate gait kinematics-kinetics remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Quantitative gait analysis for laser cue in Parkinson’s disease patients with freezing of gait

Tang¹,

Wang²,

Li³

et al. 2019

Ann. Transl. Med.

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Background: The aim of this study was to investigate the gait spatiotemporal, kinematic, and kinetic changes of Parkinson's disease (PD) patient with freezing of gait (FOG) under the laser cue (LC). Such an approach may provide greater insight into the effects of LC on gait.Methods: Thirty-four PD with FOG (PD + FOG) and 32 healthy controls (HC) were tested in gait laboratory. Patients were tested at their usual self-selected speed in no laser cue (NC) first and then under LC condition. Sagittal plane kinematic and kinetic parameters of the lower-limb joints (hip, knee, and ankle joints) as well as spatiotemporal parameters (velocity, cadence, stride length, single and double support time), were measured. Spatiotemporal parameters and kinematic were submitted to one-way analysis of variance (ANOVA) to explore difference among NC, LC, and HC. Covariance analysis was used to compare kinetic parameters.

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Laserlight visual cueing device for freezing of gait in Parkinson’s disease: a case study of the biomechanics involved

Cited by 9 publications

References 32 publications

Transverse Strips Instead of Wearable Laser Lights Alleviate the Sequence Effect Toward a Destination in Parkinson's Disease Patients With Freezing of Gait

Transverse Strips Instead of Wearable Laser Lights Alleviate the Sequence Effect Toward a Destination in Parkinson's Disease Patients With Freezing of Gait

Nonpharmacological, Nonsurgical Treatments for Freezing of Gait in Parkinson's Disease: A Systematic Review

Quantitative gait analysis for laser cue in Parkinson’s disease patients with freezing of gait

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