scholarly journals Temporal Features of Muscle Synergies in Sit-to-Stand Motion Reflect the Motor Impairment of Post-Stroke Patients

2019 ◽  
Vol 27 (10) ◽  
pp. 2118-2127 ◽  
Author(s):  
Ningjia Yang ◽  
Fady Shibata-Alnajjar ◽  
Shingo Shimoda ◽  
Noriaki Hattori ◽  
Takanori Fujii ◽  
...  
Keyword(s):  
Motor Impairment ◽  
Muscle Synergies ◽  
Stroke Patients ◽  
Post Stroke ◽  
Sit To Stand ◽  
Temporal Features

scholarly journals Recovery of Apraxia of Speech and Aphasia in Patients With Hand Motor Impairment After Stroke

2021 ◽  
Vol 12 ◽  
Author(s):  
Helena Hybbinette ◽  
Ellika Schalling ◽  
Jeanette Plantin ◽  
Catharina Nygren-Deboussard ◽  
Marika Schütz ◽  
...  
Keyword(s):  
Left Hemisphere ◽  
Motor Impairment ◽  
Stroke Recovery ◽  
Similar Amount ◽  
Apraxia Of Speech ◽  
Stroke Patients ◽  
Post Stroke ◽  
Language Functions ◽  
Brain Recovery ◽  
Recovery Mechanisms

Objective: Aphasia and apraxia of speech (AOS) after stroke frequently co-occur with a hand motor impairment but few studies have investigated stroke recovery across motor and speech-language domains. In this study, we set out to test the shared recovery hypothesis. We aimed to (1) describe the prevalence of AOS and aphasia in subacute stroke patients with a hand motor impairment and (2) to compare recovery across speech-language and hand motor domains. In addition, we also explored factors predicting recovery from AOS.Methods: Seventy participants with mild to severe paresis in the upper extremity were assessed; 50% of these (n = 35) had left hemisphere (LH) lesions. Aphasia, AOS and hand motor assessments and magnetic resonance imaging were conducted at 4 weeks (A1) and at 6 months (A2) after stroke onset. Recovery was characterized in 15 participants showing initial aphasia that also had complete follow-up data at 6 months.Results: All participants with AOS and/or aphasia had LH lesions. In LH lesioned, the prevalence of aphasia was 71% and of AOS 57%. All participants with AOS had aphasia; 80% of the participants with aphasia also had AOS. Recovery in aphasia (n = 15) and AOS (n = 12) followed a parallel pattern to that observed in hand motor impairment and recovery correlated positively across speech-language and motor domains. The majority of participants with severe initial aphasia and AOS showed a limited but similar amount of recovery across domains. Lesion volume did not correlate with results from behavioral assessments, nor with recovery. The initial aphasia score was the strongest predictor of AOS recovery.Conclusion: Our findings confirm the common occurrence of AOS and aphasia in left hemisphere stroke patients with a hand motor impairment. Recovery was similar across speech-language and motor domains, even in patients with severe impairment, supporting the shared recovery hypothesis and that similar brain recovery mechanisms are involved in speech-language and motor recovery post stroke. These observations contribute to the knowledge of AOS and its relation to motor and language functions and add information that may serve as a basis for future studies of post stroke recovery. Studies including neuroimaging and/or biological assays are required to gain further knowledge on shared brain recovery mechanisms.

scholarly journals The Use of Wearable Sensors for the Movement Assessment on Muscle Contraction Sequences in Post-Stroke Patients during Sit-to-Stand

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 657 ◽  
Author(s):  
Wei-Chun Hsu ◽  
Chao-Chin Chang ◽  
Yi-Jia Lin ◽  
Fu-Chi Yang ◽  
Li-Fong Lin ◽  
...  
Keyword(s):  
Muscle Contraction ◽  
Tibialis Anterior ◽  
Sagittal Plane ◽  
Balance Control ◽  
Wearable Sensors ◽  
Postural Adjustment ◽  
Stroke Patients ◽  
Post Stroke ◽  
Sit To Stand ◽  
Therapeutic Exercises

Electromyography (EMG) sensors have been used to study the sequence of muscle contractions during sit-to-stand (STS) in post-stroke patients. However, the majority of the studies used wired sensors with a limited number of placements. Using the latest improved wearable technology with 16 sensors, the current study was a thorough investigation to evaluate the contraction sequences of eight key muscles on the trunk and bilateral limbs during STS in post-stroke patients, as it became feasible. Multiple wearable sensors for the detection of muscle contraction sequences showed that the post-stroke patients performed STS with abnormal firing sequences, not only in the primary mover on the sagittal plane during raising, but also in the tibialis anterior, which may affect anticipatory postural adjustment in the gluteus medius, which may affect balance control. The abnormal tibialis anterior contraction until the early ascending phase and the delayed firing of the gluteus muscles highlight the importance of whole-kinetic-chain monitoring of contraction sequences using wearable sensors. The findings can be helpful for the design of therapeutic exercises.

scholarly journals Does cognition influence the functional impairment degree of post-stroke patients?

2020 ◽  
pp. 1-4
Author(s):  
Ozair Argentille Pereira da Silva ◽  
Gabriele Natane de Medeiros Cirne ◽  
Edson Meneses da Silva Filho ◽  
Enio Walker Azevedo Cacho ◽  
Roberta de Oliveira Cacho
Keyword(s):  
Motor Impairment ◽  
Functional Independence Measure ◽  
Functional Independence ◽  
Temporal Orientation ◽  
Stroke Patients ◽  
Post Stroke ◽  
Motor Abilities ◽  
Sociodemographic Data ◽  
Cognitive Levels ◽  
Sensory Motor

Background: The post-stroke subjects have several sequelae after the disease, which should be investigated and identified so that the clinical treatment includes these people in all aspects. Objective: To identify if there is a correlation between level of education, cognitive function, functional independence and the sensory-motor abilities of post-stroke subjects. Methods: The sample consisted of 27 post-stroke patients who were evaluated through the following scales: Mini-Mental State Exam (MMSE), Functional Independence Measure (FIM) and Fugl-Meyer Assessment (FMAA) and sociodemographic data collection. Results: A positive and statistically significant correlation was found between MMSE and FIM. When the scores were correlated with education, motor FIM (p = 0.005), total FIM (p = 0.006), temporal orientation MMSE (p = 0.03) and total MMSE (p = 0.01) were statistically significant. Furthermore, a positive correlation but not statistically significant was identified between the cognitive levels and sensory-motor impairment assessed by FMAA. Conclusion: It is concluded that the education of subjects is associated with motor function after stroke. In addition, cognitive impairments interfere with the level of post-stroke functionality, but do not have a direct influence on the degree of sensory-motor impairment.

Localized muscle vibration in the treatment of motor impairment and spasticity in post-stroke patients: a systematic review

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Christian AVVANTAGGIATO ◽  
Roberto CASALE ◽  
Nicoletta CINONE ◽  
Salvatore FACCIORUSSO ◽  
Antonio TURITTO ◽  
...  
Keyword(s):  
Systematic Review ◽  
Motor Impairment ◽  
Muscle Vibration ◽  
Stroke Patients ◽  
Post Stroke

scholarly journals Movement kinematics and proprioception in post-stroke spasticity: assessment using the Kinarm robotic exoskeleton

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
George Mochizuki ◽  
Andrew Centen ◽  
Myles Resnick ◽  
Catherine Lowrey ◽  
Sean P. Dukelow ◽  
...  
Keyword(s):  
Upper Limb ◽  
Motor Impairment ◽  
Movement Patterns ◽  
Visually Guided ◽  
Central Target ◽  
Robotic Exoskeleton ◽  
Visually Guided Reaching ◽  
Post Stroke ◽  
Temporal Features ◽  
Limb Spasticity

Abstract Background Motor impairment after stroke interferes with performance of everyday activities. Upper limb spasticity may further disrupt the movement patterns that enable optimal function; however, the specific features of these altered movement patterns, which differentiate individuals with and without spasticity, have not been fully identified. This study aimed to characterize the kinematic and proprioceptive deficits of individuals with upper limb spasticity after stroke using the Kinarm robotic exoskeleton. Methods Upper limb function was characterized using two tasks: Visually Guided Reaching, in which participants moved the limb from a central target to 1 of 4 or 1 of 8 outer targets when cued (measuring reaching function) and Arm Position Matching, in which participants moved the less-affected arm to mirror match the position of the affected arm (measuring proprioception), which was passively moved to 1 of 4 or 1 of 9 different positions. Comparisons were made between individuals with (n = 35) and without (n = 35) upper limb post-stroke spasticity. Results Statistically significant differences in affected limb performance between groups were observed in reaching-specific measures characterizing movement time and movement speed, as well as an overall metric for the Visually Guided Reaching task. While both groups demonstrated deficits in proprioception compared to normative values, no differences were observed between groups. Modified Ashworth Scale score was significantly correlated with these same measures. Conclusions The findings indicate that individuals with spasticity experience greater deficits in temporal features of movement while reaching, but not in proprioception in comparison to individuals with post-stroke motor impairment without spasticity. Temporal features of movement can be potential targets for rehabilitation in individuals with upper limb spasticity after stroke.

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