A Novel Method for Systematic Analysis of Rigidity in Parkinson's Disease
Identifieur interne : 000D14 ( PascalFrancis/Corpus ); précédent : 000D13; suivant : 000D15A Novel Method for Systematic Analysis of Rigidity in Parkinson's Disease
Auteurs : Takayuki Endo ; Ryuhei Okuno ; Masaru Yokoe ; Kenzo Akazawa ; Saburo SakodaSource :
- Movement disorders [ 0885-3185 ] ; 2009.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
We propose a novel system that analyzes the components of rigidity in Parkinson's disease (PD) usually perceived by physicians, in a very simple and systematic way for routine clinical practice. Our system is composed of two compact force sensors, a gyroscope, and EMG surface electrodes. Muscle tone was assessed in 24 healthy elderly subjects and 27 PD patients by passive extension and flexion of the elbow joint with ramp-and-hold trajectory. Torque and angle data in the dynamic phase were used to calculate "elastic coefficients" in extension and flexion, and the mean value of torque in each dynamic phase at each joint angle (defined as "Bias") was also calculated. The muscle activity index in the static phase (EMG Index) was obtained for both biceps brachii (BB) and triceps brachii (TB) muscles. "Elastic coefficients," sum of the "difference of Bias" and "EMG Index" for BB all correlated well with UPDRS score. Based on our results, Parkinsonian rigidity consists of both an "elastic" component and a "difference of Bias" component, and neurologists may assess greater rigidity when either one or both components are high in value. The EMG index was useful for differentiating PD patients with slight rigidity from healthy elderly adults.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 10-0036264 INIST |
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ET : | A Novel Method for Systematic Analysis of Rigidity in Parkinson's Disease |
AU : | ENDO (Takayuki); OKUNO (Ryuhei); YOKOE (Masaru); AKAZAWA (Kenzo); SAKODA (Saburo) |
AF : | Department of Neurology, Osaka University Graduate School of Medicine/Osaka/Japon (1 aut., 3 aut., 5 aut.); Department of Electrical and Electronic Engineering, Setsunan University/Osaka/Japon (2 aut.); Department of Biomedical Engineering, Osaka Institute of Technology/Osaka/Japon (4 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2009; Vol. 24; No. 15; Pp. 2218-2224; Bibl. 21 ref. |
LA : | Anglais |
EA : | We propose a novel system that analyzes the components of rigidity in Parkinson's disease (PD) usually perceived by physicians, in a very simple and systematic way for routine clinical practice. Our system is composed of two compact force sensors, a gyroscope, and EMG surface electrodes. Muscle tone was assessed in 24 healthy elderly subjects and 27 PD patients by passive extension and flexion of the elbow joint with ramp-and-hold trajectory. Torque and angle data in the dynamic phase were used to calculate "elastic coefficients" in extension and flexion, and the mean value of torque in each dynamic phase at each joint angle (defined as "Bias") was also calculated. The muscle activity index in the static phase (EMG Index) was obtained for both biceps brachii (BB) and triceps brachii (TB) muscles. "Elastic coefficients," sum of the "difference of Bias" and "EMG Index" for BB all correlated well with UPDRS score. Based on our results, Parkinsonian rigidity consists of both an "elastic" component and a "difference of Bias" component, and neurologists may assess greater rigidity when either one or both components are high in value. The EMG index was useful for differentiating PD patients with slight rigidity from healthy elderly adults. |
CC : | 002B17; 002B17G |
FD : | Maladie de Parkinson; Pathologie du système nerveux; Méthode analyse; Electromyographie |
FG : | Pathologie de l'encéphale; Syndrome extrapyramidal; Maladie dégénérative; Pathologie du système nerveux central; Electrophysiologie |
ED : | Parkinson disease; Nervous system diseases; Analysis method; Electromyography |
EG : | Cerebral disorder; Extrapyramidal syndrome; Degenerative disease; Central nervous system disease; Electrophysiology |
SD : | Parkinson enfermedad; Sistema nervioso patología; Método análisis; Electromiografía |
LO : | INIST-20953.354000171746820060 |
ID : | 10-0036264 |
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Pascal:10-0036264Le document en format XML
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<front><div type="abstract" xml:lang="en">We propose a novel system that analyzes the components of rigidity in Parkinson's disease (PD) usually perceived by physicians, in a very simple and systematic way for routine clinical practice. Our system is composed of two compact force sensors, a gyroscope, and EMG surface electrodes. Muscle tone was assessed in 24 healthy elderly subjects and 27 PD patients by passive extension and flexion of the elbow joint with ramp-and-hold trajectory. Torque and angle data in the dynamic phase were used to calculate "elastic coefficients" in extension and flexion, and the mean value of torque in each dynamic phase at each joint angle (defined as "Bias") was also calculated. The muscle activity index in the static phase (EMG Index) was obtained for both biceps brachii (BB) and triceps brachii (TB) muscles. "Elastic coefficients," sum of the "difference of Bias" and "EMG Index" for BB all correlated well with UPDRS score. Based on our results, Parkinsonian rigidity consists of both an "elastic" component and a "difference of Bias" component, and neurologists may assess greater rigidity when either one or both components are high in value. The EMG index was useful for differentiating PD patients with slight rigidity from healthy elderly adults.</div>
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<ET>A Novel Method for Systematic Analysis of Rigidity in Parkinson's Disease</ET>
<AU>ENDO (Takayuki); OKUNO (Ryuhei); YOKOE (Masaru); AKAZAWA (Kenzo); SAKODA (Saburo)</AU>
<AF>Department of Neurology, Osaka University Graduate School of Medicine/Osaka/Japon (1 aut., 3 aut., 5 aut.); Department of Electrical and Electronic Engineering, Setsunan University/Osaka/Japon (2 aut.); Department of Biomedical Engineering, Osaka Institute of Technology/Osaka/Japon (4 aut.)</AF>
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<EA>We propose a novel system that analyzes the components of rigidity in Parkinson's disease (PD) usually perceived by physicians, in a very simple and systematic way for routine clinical practice. Our system is composed of two compact force sensors, a gyroscope, and EMG surface electrodes. Muscle tone was assessed in 24 healthy elderly subjects and 27 PD patients by passive extension and flexion of the elbow joint with ramp-and-hold trajectory. Torque and angle data in the dynamic phase were used to calculate "elastic coefficients" in extension and flexion, and the mean value of torque in each dynamic phase at each joint angle (defined as "Bias") was also calculated. The muscle activity index in the static phase (EMG Index) was obtained for both biceps brachii (BB) and triceps brachii (TB) muscles. "Elastic coefficients," sum of the "difference of Bias" and "EMG Index" for BB all correlated well with UPDRS score. Based on our results, Parkinsonian rigidity consists of both an "elastic" component and a "difference of Bias" component, and neurologists may assess greater rigidity when either one or both components are high in value. The EMG index was useful for differentiating PD patients with slight rigidity from healthy elderly adults.</EA>
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