100 DYNAMIC FOOT PRESSURE MEASUREMENT IN PARKINSON'S DISEASE WITH FOOT SCAN SYSTEM

2010 ◽  
Vol 16 ◽  
pp. S29-S30
Author(s):  
K.-W. Park ◽  
S.-B. Kho
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Pressure Measurement ◽  
Foot Pressure

scholarly journals Levodopa Reduces Muscle Tone and Lower Extremity Tremor in Parkinson’s Disease

1995 ◽  
Vol 22 (4) ◽  
pp. 280-285 ◽  
Author(s):  
Anne Burleigh ◽  
Fay Horak ◽  
John Nutt ◽  
James Frank
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Lower Extremity ◽  
Muscle Activity ◽  
Center Of Pressure ◽  
Muscle Tone ◽  
High Amplitude ◽  
Trunk Muscles ◽  
Foot Pressure ◽  
Control Subjects

AbstractObjectiveWe have quantified the effects of levodopa treatment in Parkinsonian subjects during maintained stance.MethodsElectromyographic muscle activity during quiet stance was assessed in subjects with Parkinson’s disease, who exhibited a fluctuating response to levodopa, and in age-matched control subjects. Stance stability was also assessed from mean displacement and velocity of the center of pressure excursions during stance.ResultsLower extremity and trunk muscles showed high amplitude activity in all Parkinson’s subjects when “off”, and a 4–5 Hz tremor in three of these subjects. When “on”, the amplitude of muscle activity was reduced in the distal muscles more than the proximal, while tremor was suppressed in all muscles. Corresponding to the excessive muscle activity, the Parkinson’s subjects had increased velocity and variability of velocity in the anterior-posterior center of foot pressure excursions, but the mean displacement of the center of pressure excursion was not different from the controls. The velocity of center of pressure excursions in the Parkinson’s subjects “on”, approached those of the control subjects suggesting that the excessive distal muscle amplitude and tremor contributed to the high velocity of the center of pressure.ConclusionsThese findings suggest that dopaminergic systems are involved in the regulation of muscle tone during stance. Depletion of dopaminergic transmission results in increased muscle tone and tremor in the lower extremities which may contribute to changes in posture and stability.

scholarly journals Preparatory Postural Adjustments in Parkinsonian Patients with Postural Instability

1995 ◽  
Vol 22 (2) ◽  
pp. 126-135 ◽  
Author(s):  
Robert G. Lee ◽  
Ida Tonolli ◽  
Francois Viallet ◽  
Roslyn Aurenty ◽  
Jean Massion
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Normal Subjects ◽  
Postural Instability ◽  
Emg Activity ◽  
Foot Pressure ◽  
Postural Adjustments ◽  
Leg Muscles ◽  
Sequence Of Events ◽  
Reaction Forces

AbstractBackground:Postural instability is a common problem in patients with Parkinson’s disease. This paper reports results of a study undertaken to investigate some of the possible mechanisms responsible for this instability.Methods:Preparatory postural adjustments associated with a lateral leg raising task were studied in five parkinsonian patients and four age-matched controls. Recordings included ground reaction forces, kinematics, and surgace EMG activity from multiple leg muscles.Results:In normal subjects there was a well-defined sequence of events preceding the onset of leg elevation, beginning with a transfer of centre of foot pressure (CP), initially toward the moving leg and then back to the support side, followed by displacement of the trunk toward the support side. In the more severely affected parkinsonian patients, the amplitude of the the initial displacement of CP was markedly reduced. The interval between the earliest force changes and the onset of leg elevation was prolonged and the relative timing of the kenematic adjustments during this interval was disrupted. In addition the alternating burst and periods of inhibition observed in the EMG recordings from the normal subjects were replaced by continuous tonic EMG activity.Conclusions:These observations suggest that abnormalities in programming preparatory postural adjustments may contribute to postural instability in some patients with advanced Parkinson’s disease.

scholarly journals Foot Pressure Wearable Sensors for Freezing of Gait Detection in Parkinson’s Disease

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 128
Author(s):  
Andrea Marcante ◽  
Roberto Di Marco ◽  
Giovanni Gentile ◽  
Clelia Pellicano ◽  
Francesca Assogna ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Everyday Life ◽  
False Negative ◽  
Freezing Of Gait ◽  
False Negative Rate ◽  
Common Symptom ◽  
Foot Pressure ◽  
Assessment Protocol ◽  
Increased Risk

Freezing of Gait (FoG) is a common symptom in Parkinson’s Disease (PD) occurring with significant variability and severity and is associated with increased risk of falls. FoG detection in everyday life is not trivial, particularly in patients manifesting the symptom only in specific conditions. Various wearable devices have been proposed to detect PD symptoms, primarily based on inertial sensors. We here report the results of the validation of a novel system based on a pair of pressure insoles equipped with a 3D accelerometer to detect FoG episodes. Twenty PD patients attended a motor assessment protocol organized into eight multiple video recorded sessions, both in clinical and ecological settings and both in the ON and OFF state. We compared the FoG episodes detected using the processed data gathered from the insoles with those tagged by a clinician on video recordings. The algorithm correctly detected 90% of the episodes. The false positive rate was 6% and the false negative rate 4%. The algorithm reliably detects freezing of gait in clinical settings while performing ecological tasks. This result is promising for freezing of gait detection in everyday life via wearable instrumented insoles that can be integrated into a more complex system for comprehensive motor symptom monitoring in PD.

Tongue Pressure Measurement and Videofluoroscopic Study of Swallowing in Patients with Parkinson’s Disease

Dysphagia ◽  
2018 ◽  
Vol 34 (1) ◽  
pp. 80-88 ◽  
Author(s):  
Tatsuyuki Fukuoka ◽  
Takahiro Ono ◽  
Kazuhiro Hori ◽  
Yosuke Wada ◽  
Yuki Uchiyama ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Pressure Measurement ◽  
Tongue Pressure

Evaluation of Efferent Auditory System and Hearing Quality in Parkinson's Disease: Is the Difficulty in Speech Understanding in Complex Listening Conditions Related to Neural Degeneration or Aging?

2020 ◽  
pp. 1-9
Author(s):  
Nuriye Yıldırım Gökay ◽  
Bülent Gündüz ◽  
Fatih Söke ◽  
Recep Karamert
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Auditory System ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Auditory Pathway ◽  
Normal Hearing ◽  
System Function ◽  
Distortion Product

Purpose The effects of neurological diseases on the auditory system have been a notable issue for investigators because the auditory pathway is closely associated with neural systems. The purposes of this study are to evaluate the efferent auditory system function and hearing quality in Parkinson's disease (PD) and to compare the findings with age-matched individuals without PD to present a perspective on aging. Method The study included 35 individuals with PD (mean age of 48.50 ± 8.00 years) and 35 normal-hearing peers (mean age of 49 ± 10 years). The following tests were administered for all participants: the first section of the Speech, Spatial and Qualities of Hearing Scale; pure-tone audiometry, speech audiometry, tympanometry, and acoustic reflexes; and distortion product otoacoustic emissions (DPOAEs) and contralateral suppression of DPOAEs. SPSS Version 25 was used for statistical analyses, and values of p < .05 were considered statistically significant. Results There were no statistically significant differences in the pure-tone audiometry thresholds and DPOAE responses between the individuals with PD and their normal-hearing peers ( p = .732). However, statistically significant differences were found between the groups in suppression levels of DPOAEs and hearing quality ( p < .05). In addition, a statistically significant and positive correlation was found between the amount of suppression at some frequencies and the Speech, Spatial and Qualities of Hearing Scale scores. Conclusions This study indicates that medial olivocochlear efferent system function and the hearing quality of individuals with PD were affected adversely due to the results of PD pathophysiology on the hearing system. For optimal intervention and follow-up, tasks related to hearing quality in daily life can also be added to therapies for PD.

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