Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 33
Filtrar
1.
Artículo en Inglés | MEDLINE | ID: mdl-38207195

RESUMEN

OBJECTIVE: Verbal instruction is one of the most commonly used methods that therapists use to correct walking pattern for people with Parkinson's disease (PD). This study aimed to compare the long-term training effects of two different verbal instructions that either asked the participants to 'take big steps' or 'strike the ground with the heel' on walking ability in individuals with PD. DESIGN: Forty-five participants with PD were randomized into the big-step (BIG) or heel strike (HS) group. The participants underwent 12 sessions of treadmill and overground gait training. Throughout the interventions, the BIG group received an instruction to 'take big steps,' while the HS group received an instruction to 'strike the ground with your heel.' The primary outcome was gait performance, including velocity, stride length, cadence, and heel strike angle. The participants were assessed before, immediately after, and 1-month after training. RESULTS: Both groups showed significant improvements in gait performance after training. The HS group showed continuous improvements in velocity and stride length during the follow-up period; however, the BIG group showed slightly decreased performance. CONCLUSION: A verbal instruction emphasizing heel strike can facilitate long-term retention of walking performance in people with PD.

2.
Neurorehabil Neural Repair ; 37(1): 37-45, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36636767

RESUMEN

BACKGROUND: People with Parkinson's disease (PD) are known to have motor learning difficulties. Although numerous studies have demonstrated that a single bout of aerobic exercise (AEX) can facilitate motor learning in non-disabled adults, the same beneficial effect in PD is unknown. Furthermore, associated neuroplastic changes have not been investigated. OBJECTIVES: This study aimed to determine whether a single bout of aerobic exercise (AEX) can facilitate motor sequence learning in people with PD and to investigate the associated neurophysiological changes. METHODS: Thirty individuals with PD were recruited and randomized into the exercise group (PD + AEX) and non-exercise group (PD - AEX). At the first visit, corticomotor excitability was assessed using transcranial magnetic stimulation (TMS). All participants then performed a serial reaction time task (SRTT) followed by 20 minutes of moderately-high intensity aerobic exercise (AEX) for the PD + AEX group or rest for the PD - AEX group. The SRTT and TMS were reevaluated at 3 time points: immediately after aerobic exercise (AEX) or rest, on the second day after practice (D2), and a week after practice (D7). RESULTS: Both groups showed improvement throughout practice. At retention, the PD + AEX group showed improved SRTT performance on D7 compared to D2 (P = .001), while the PD - AEX group showed no change in performance. TMS results showed that the PD + AEX group had significantly higher corticomotor excitability than the PD - AEX group on D7. CONCLUSION: A single session of aerobic exercise (AEX) could enhance motor sequence learning and induce neuroplastic changes. Clinicians can consider providing aerobic exercise (AEX) after motor task training for people with PD. CLINICAL REGISTRATION: NCT04189887 (ClinicalTrials.gov).


Asunto(s)
Ejercicio Físico , Enfermedad de Parkinson , Adulto , Humanos , Ejercicio Físico/fisiología , Enfermedad de Parkinson/fisiopatología , Análisis y Desempeño de Tareas , Estimulación Magnética Transcraneal
3.
NeuroRehabilitation ; 49(1): 57-64, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34180427

RESUMEN

BACKGROUND: Recent advances in technology have warranted the use of wearable sensors to monitor gait and posture. However, the psychometric properties of using wearable devices to measure gait-related outcomes have not been fully established in patients with Parkinson's disease (PD). OBJECTIVE: This study aimed to investigate the test-retest reliability of body-worn sensors for gait evaluation in people with PD. Additionally, the influence of disease severity on the reliability was determined. METHODS: Twenty individuals with PD were recruited. During the first evaluation, the participants wore inertial sensors on their shoes and walked along a walkway thrice at their comfortable walking speed. The participants were then required to return to the lab after 3-5 days to complete the second evaluation with the same study procedure. Test-retest reliability of gait-related outcomes were calculated. To determine whether the results would be affected by disease severity, reliability was re-calculated by subdividing the participants into early and mid-advanced stages of the disease. RESULTS: The results showed moderate to good reliability (ICC = 0.64-0.87) of the wearable sensors for gait assessment in the general population with PD. Subgroup analysis showed that the reliability was higher among patients at early stages (ICC = 0.71-0.97) compared to those at mid-advanced stages (ICC = 0.65-0.81) of PD. CONCLUSIONS: Wearable sensors could reliably measure gait parameters in people with PD, and the reliability was higher among individuals at early stages of the disease compared to those at mid-advanced stages. Absolute reliability values were calculated to act as references for future studies.


Asunto(s)
Marcha , Enfermedad de Parkinson , Pie , Humanos , Reproducibilidad de los Resultados , Caminata , Dispositivos Electrónicos Vestibles
4.
Front Hum Neurosci ; 14: 190, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32508609

RESUMEN

BACKGROUND AND PURPOSE: Freezing of gait (FOG) is a debilitating gait disorder in people with Parkinson's disease (PD). While various neuroimaging techniques have been used to investigate the pathophysiology of FOG, changes in corticomotor excitability associated with FOG have yet to be determined. Research to date has not concluded if changes in corticomotor excitability are associated with gait disturbances in this patient population. This study aimed to use transcranial magnetic stimulation (TMS) to investigate corticomotor excitability changes associated with FOG. Furthermore, the relationship between corticomotor excitability and gait performances would be determined. METHODS: Eighteen participants with PD and FOG (PD + FOG), 15 without FOG (PD - FOG), and 15 non-disabled adults (Control) were recruited for this study. Single and paired-pulse TMS paradigms were used to assess corticospinal and intracortical excitability, respectively. Gait performance was measured by the 10-Meter-Walk test. Correlation analysis was performed to evaluate relationships between TMS outcomes and gait parameters. RESULTS: Compared with the Control group, the PD + FOG group showed a significantly lower resting motor threshold and reduced short intracortical inhibition (SICI). Correlation analysis revealed a relationship between resting motor evoked potential and step length, and between SICI and walking velocity in the Control group. While the silent period correlated with step length in the PD - FOG group, no significant relationship was observed in the PD + FOG group. DISCUSSION AND CONCLUSION: Compared to the Control group, the PD + FOG group exhibited reduced corticomotor inhibition. Distinct correlations observed among the three groups suggest that the function of the corticomotor system plays an important role in mediating walking ability in non-disabled adults and people with PD - FOG, while people with PD + FOG may rely on neural networks other than the corticomotor system to control gait.

5.
J Formos Med Assoc ; 119(1 Pt 1): 81-88, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31097283

RESUMEN

PURPOSE: Frozen shoulder syndrome (FSS) causes pain and reduces the range of motion in the shoulder joint. To investigate the short and medium-term effects of electroacupuncture in people with FSS, we evaluated the therapeutic effects of true and sham electroacupuncture on pain relief and improvement of shoulder function. METHODS: In this randomized, single-blind controlled clinical trial, 21 subjects with FSS were randomly assigned to two groups: a true electroacupuncture group (TEAG) and a sham electroacupuncture group (SEAG). The two groups underwent 18 sessions of treatment over approximately 6-9 weeks and were then followed up at 1, 3, and 6 months. Their effectiveness for alleviating the intensity of shoulder pain was evaluated with a visual analog scale (VAS), while improved shoulder mobility was evaluated by the active range of motion (AROM) and passive range of motion (PROM), and shoulder functional ability was evaluated using the Shoulder Pain and Disability Index (SPADI). RESULTS: It demonstrated that the TEAG or SEAG showed lasting effects at 1, 3, and 6 months, although with no significant difference between these two groups in the shoulder functional ability outcomes. However, the decline in the VAS occurred earlier in the TEAG than the SEAG. Also, there was much more improvement in AROM for flexion and abduction in the TEAG than the SEAG. An increase in the abduction angle after electroacupuncture and manual rehabilitation was also apparent. CONCLUSION: These results suggest that electroacupuncture plus rehabilitation may provide earlier pain relief for patients with FSS and could be applied clinically.


Asunto(s)
Bursitis/rehabilitación , Electroacupuntura , Articulación del Hombro/fisiopatología , Dolor de Hombro/terapia , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Rango del Movimiento Articular , Método Simple Ciego , Factores de Tiempo , Resultado del Tratamiento , Escala Visual Analógica , Adulto Joven
6.
Medicine (Baltimore) ; 98(45): e17874, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31702655

RESUMEN

BACKGROUND: Stepping in place (SIP) is a useful locomotor training intervention. The purpose of this study was to investigate the effects of single auditory-cued SIP training on cortical excitability, rhythmic movements and walking ability in patients with Parkinson's disease(PD). METHODS: Cross-over randomized control trial. Each participant completed two interventions with at least one-week washout period in between: (1) SIP with concurrent auditory cues (AC condition) and (2) SIP without auditory cues (NC condition). RESULTS: In the primary outcome, the cortical silent period (CSP) duration increased (P = .005), whereas short intracortical inhibition (SICI) decreased after training (P = .001). Freezers demonstrated enhanced inhibition in the resting motor threshold and CSP duration. SICI and intracortical facilitation were modulated in both groups under the AC condition. In the secondary outcomes, the stepping variability decreased significantly (AC: P = .033; NC: P = .009), whereas walking cadence increased after training (AC: P = .019; NC: P = .0023). CONCLUSIONS: Auditory-cued SIP training improved the lower-limb movement variability and modulated the cortical excitability in patients with PD. Freezers may benefit more from this training than nonfreezers.


Asunto(s)
Estimulación Acústica/métodos , Señales (Psicología) , Trastornos Neurológicos de la Marcha/terapia , Estimulación Magnética Transcraneal/métodos , Anciano , Estudios Cruzados , Potenciales Evocados Auditivos/fisiología , Trastornos Neurológicos de la Marcha/etiología , Humanos , Persona de Mediana Edad , Enfermedad de Parkinson/complicaciones , Rendimiento Físico Funcional , Modalidades de Fisioterapia , Caminata/fisiología
7.
Clin Rehabil ; 33(8): 1344-1354, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30977392

RESUMEN

OBJECTIVE: We investigated adding lower limb transcutaneous nerve stimulation or neuromuscular electrical stimulation to standard early rehabilitation in acute stroke patients. DESIGN: An assessor-blinded, randomized controlled pilot study. SETTING: A medical stroke center. SUBJECTS: First-stroke patients aged 20-80 years admitted to the stroke center within 24 hours post stroke. INTERVENTIONS: A total of 42 participants were randomly assigned to groups: transcutaneous nerve stimulation + standard early rehabilitation, neuromuscular electrical stimulation + standard early rehabilitation, or standard early rehabilitation-only. Transcutaneous nerve or neuromuscular electrical stimulation was delivered to the affected tibialis anterior and quadriceps muscles for 30 minutes a day, five days per week for two weeks. MAIN MEASURES: The Postural Assessment Scale for Stroke Patients, the Functional Independence Measure, and three mobility milestones, namely, sitting for >five minutes, standing for >one minute, and walking ⩾50 m, were evaluated, respectively, at baseline, at the two-week post-intervention, and at two-week follow-up. RESULTS: Significant differences existed in the Postural Assessment Scale for Stroke Patients scores between the transcutaneous nerve stimulation and standard early rehabilitation-only groups measured at two-weeks post-intervention (mean (SD) = 31.38 (5.39) and 18.00 (8.65), respectively) and at the two-week follow-up (34.08 (2.69) and 26.14 (7.77), respectively). A higher proportion of participants could walk ⩾50 m independently in the transcutaneous nerve stimulation group than in the standard early rehabilitation-only group at the two-week post-intervention (P = 0.013) and two-week follow-up (P = 0.01) marks. CONCLUSION: Two weeks of transcutaneous nerve stimulation added to standard early rehabilitation improved postural stability and walking in acute stroke patients.


Asunto(s)
Terapia por Estimulación Eléctrica , Extremidad Inferior/fisiopatología , Rehabilitación de Accidente Cerebrovascular , Estimulación Eléctrica Transcutánea del Nervio , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Equilibrio Postural/fisiología , Estudios Prospectivos , Accidente Cerebrovascular/fisiopatología , Velocidad al Caminar/fisiología
8.
Behav Neurol ; 2018: 7080218, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30598705

RESUMEN

OBJECTIVES: To investigate the effects of practice variability combined with task-oriented electromyographic biofeedback (EMGBFB) on strength and balance in people with chronic stroke. METHODS: Thirty-three participants were randomly assigned into the constant force EMGBFB tibialis anterior (TA) exercise (constant) group, the variable force EMGBFB tibialis anterior exercise (variable) group, or the upper extremity exercise without EMGBFB (control) group. Subjects in each group received 6 weekly sessions of exercise training (18 sessions, 40 minutes each). Motor outcomes were TA strength, balance (anteroposterior sway amplitude defined by limits of stability test in dynamic posturography), walking speed, Timed Up and Go test (TUGT), and six-minute walk test (6MWT). Data were measured at baseline, 1 day, 2 weeks, and 6 weeks posttraining. RESULTS: TA strength increased significantly in both the constant and variable groups after training. Balance significantly improved only in the variable group. All participants showed improvements in walking speed, TUGT, and 6MWT. CONCLUSIONS: Task-oriented EMGBFB-assisted TA exercise training improved muscle strength in people with chronic stroke. Practicing to reach varying force levels during EMGBFB-assisted tibialis anterior exercises facilitated improvements in the ability to sway in the anteroposterior direction while standing. Our findings highlight the importance of task-oriented and motor learning principles while using the EMGBFB as an adjunct therapy in stroke rehabilitation. This trial was registered with trial registration number NCT01962662.


Asunto(s)
Terapia por Ejercicio/métodos , Fuerza Muscular/fisiología , Neurorretroalimentación/métodos , Evaluación de Resultado en la Atención de Salud , Equilibrio Postural/fisiología , Rehabilitación de Accidente Cerebrovascular/métodos , Accidente Cerebrovascular/terapia , Adulto , Anciano , Enfermedad Crónica , Electromiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Método Simple Ciego
9.
Ultrasound Med Biol ; 44(1): 214-222, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29107354

RESUMEN

Cavitation plays a substantial role in the clinical effects of extracorporeal shock wave therapy (ESWT). It is also generally accepted as a major mechanism in sonophoresis. To identify the enhancing effect of extracorporeal shock wave-mediated transdermal drug delivery, 24 Wistar rats were randomly assigned to four groups: (i) topical application of a eutectic mixture of local anesthetics (EMLA); (ii) 1-MHz ultrasound; (iii) ESWT pre-treatment combined with EMLA application; (iv) ESWT concurrent with EMLA application on rat tails. The degree of anesthesia was assessed using the amplitude and latency of sensory nerve action potentials within 5 min after a 60-min EMLA application. The results indicated that ESWT pre-treatment and concurrent ESWT accelerated the anesthetic effects of the EMLA cream on the tail nerve (p < 0.05). This finding might indicate that shock wave-mediated transdermal drug delivery is possible during the ESWT period.


Asunto(s)
Anestésicos Locales/administración & dosificación , Tratamiento con Ondas de Choque Extracorpóreas/métodos , Lidocaína/administración & dosificación , Dolor/prevención & control , Prilocaína/administración & dosificación , Cola (estructura animal)/inervación , Administración Cutánea , Animales , Modelos Animales de Enfermedad , Combinación Lidocaína y Prilocaína , Masculino , Ratas , Ratas Wistar , Cola (estructura animal)/efectos de los fármacos
10.
J Phys Ther Sci ; 29(2): 317-322, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28265165

RESUMEN

[Purpose] No literature has described a suitable method for measuring muscle strength in a supine position during acute phase after stroke. This study investigated the feasibility and reliability of using a commercial handheld dynamometer to measure the muscle strengths of the hip flexor, knee extensor, and dorsiflexor in the supine position with a modified method for patients at a stroke intensive care center within 7 days of stroke onset. [Subjects and Methods] Fifteen persons with acute stroke participated in this cross-sectional study. For each patient, the muscle strengths of the hip flexors, knee extensors, and dorsiflexors were measured twice by two testers on the same day. Each patient was re-tested at the same time of day one day later. Inter-rater and test-retest reliability were then determined by the intraclass correlation coefficients (ICCs). [Results] For the three muscle groups, the inter-rater reliability ICCs were all 0.99 and the test-retest reliability ICCs were greater than 0.85. The investigated method thus has good inter-rater reliability and high agreement between the test-retest measurements, with acceptable measurement errors. [Conclusion] The modified method using a handheld dynamometer to test the muscle strength of acute stroke patients is a feasible and reliable method for clinical use.

11.
Technol Health Care ; 25(3): 541-555, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28211830

RESUMEN

BACKGROUND: Long-term, sustained progress is necessary in drop foot rehabilitation. The necessary inconvenient body training movements, the return trips to the hospital and repetitive boring training using functional electrical stimulation (FES) often results in the patient suspending their training. The patient's drop foot rehabilitation will not progress if training is suspended. OBJECTIVE: A fast spread, highly portable drop foot rehabilitation training device based on the smart phone is presented. This device is combined with a self-made football APP and feedback controlled FES. The drop foot patient can easily engage in long term rehabilitation training that is more convenient and interesting. METHODS: An interactive game is established on the smart phone with the Android system using the originally built-in wireless communications. The ankle angle information is detected by an external portable device as the game input signal. The electrical stimulation command to the external device is supplemented with FES stimulation for inadequate ankle efforts. RESULTS: After six-weeks training using six cases, the results indicated that this training device showed significant performance improvement (p< 0.05) in the patient's ankle dorsiflexion strength, ankle dorsiflexion angle, control timing and Timed Up and Go. CONCLUSIONS: Preliminary results show that this training device provides significant positive help to drop foot patients. Moreover, this device is based on existing and universally popular mobile processing, which can be rapidly promoted. The responses of clinical cases also show this system is easy to operate, convenient and entertaining. All of these features can improve the patient's willingness to engage in long term rehabilitation.


Asunto(s)
Terapia por Estimulación Eléctrica , Fútbol Americano , Trastornos Neurológicos de la Marcha/rehabilitación , Aplicaciones Móviles , Teléfono Inteligente , Adulto , Anciano , Anciano de 80 o más Años , Terapia por Estimulación Eléctrica/métodos , Terapia por Estimulación Eléctrica/psicología , Humanos , Persona de Mediana Edad , Cooperación del Paciente
12.
IEEE Trans Neural Syst Rehabil Eng ; 24(11): 1199-1209, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-26929055

RESUMEN

This paper presents an assistive control system with a special kinematic structure of an upper limb rehabilitation robot embedded with force/torque sensors. A dynamic human model integrated with sensing torque is used to simulate human interaction under three rehabilitation modes: active mode, assistive mode, and passive mode. The hereby proposed rehabilitation robot, called NTUH-ARM, provides 7 degree-of- freedom (DOF) motion and runs subject to an inherent mapping between the 7 DOFs of the robot arm and the 4 DOFs of the human arm. The Lyapunov theory is used to analyze the stability of the proposed controller design. Clinical trials have been conducted with six patients, one of which acts as a control. The results of these experiments are positive and STREAM assessment by physical therapists also reveals promising results.


Asunto(s)
Biorretroalimentación Psicológica/instrumentación , Modelos Biológicos , Terapia Pasiva Continua de Movimiento/instrumentación , Trastornos del Movimiento/rehabilitación , Robótica/instrumentación , Terapia Asistida por Computador/instrumentación , Brazo , Biorretroalimentación Psicológica/métodos , Diseño de Equipo , Análisis de Falla de Equipo , Dispositivo Exoesqueleto , Humanos , Terapia Pasiva Continua de Movimiento/métodos , Rehabilitación Neurológica/instrumentación , Rehabilitación Neurológica/métodos , Robótica/métodos , Terapia Asistida por Computador/métodos
13.
Telemed J E Health ; 19(12): 973-8, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24138613

RESUMEN

OBJECTIVE: Tele-assessment techniques can provide healthcare professionals with easily accessible information regarding patients' clinical progress. Recently, kinematic analysis systems have been used to assess rehabilitative outcomes in stroke patients. Kinematic systems, however, are not compatible with tele-assessment. The objective of our study was to develop a tele-assessment system for acquiring kinematic data of forward reaching movements in stroke patients, with an emphasis on cost-effectiveness, portability, and ease of use. MATERIALS AND METHODS: We selected four healthy control participants and eight hemiplegic stroke patients for our study. The stroke patients were classified as Brunnstrom stage III, stage IV, or stage V. Our tele-assessment system used two three-axes accelerometers, a potentiometer, a multifunctional data acquisition card, and two computers. A standardized kinematic system was applied simultaneously to validate the measurements recorded by our tele-assessment system during five repetitions of forward reaching movements. RESULTS: The correlation coefficients of the reaching displacement, velocity, and acceleration measurements obtained using our tele-assessment system and the standardized kinematic system were 0.956, 0.896, and 0.727, respectively. Differences in the maximum reaching distance and the maximum reaching velocity of forward reaching movements were observed among the study groups. There were no significant differences in the time required to complete the testing session among the study groups. CONCLUSIONS: Our tele-assessment system is valid for the evaluation of upper-extremity reaching ability in stroke patients. Further research is needed to investigate the feasibility of the use of the tele-assessment system in patients' homes.


Asunto(s)
Evaluación de la Discapacidad , Servicios de Atención de Salud a Domicilio , Accidente Cerebrovascular/fisiopatología , Telemedicina/economía , Adulto , Anciano , Anciano de 80 o más Años , Costos y Análisis de Costo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Taiwán
14.
Clin Biomech (Bristol, Avon) ; 28(5): 549-54, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23583096

RESUMEN

BACKGROUND: Pain that accompanies anterior cruciate ligament deficiency during dynamic knee extension exercises is usually caused by excessive anterior tibial translation, which can be restricted if the anterior cruciate ligament was intact. METHODS: A functional electrical stimulator is incorporated with a training device to induce hamstring contractions during certain degrees of knee extension to replicate effects similar to those generated by an intact anterior cruciate ligament and to reduce anterior tibial translation. By using a camera that tracks markers placed on bony prominences of the femur and tibia, the anterior tibial translations corresponding to various settings were determined by customized image processing procedures. FINDINGS: In the electrical stimulation sessions, the knee extensions with electrical stimulation feedback induced significantly (n=6, P<.05) less anterior tibial translation over the range of 20 to 50° when compared to those using the standard isokinetic shank restraint. Likewise, the knee extensions with an anti-shear device that blocks tibia displacement mechanically also induced significantly (n=6, P<.05) less anterior tibial translation, but over a different range of knee extension (30 to 70°). INTERPRETATION: Despite the fact that both the electrical stimulator and the anti-shear device assisted in reducing anterior tibial translation, the tendency of the curves generated with the functional electrical stimulation was generally more similar to those generated when using the standard isokinetic shank restraint.


Asunto(s)
Ligamento Cruzado Anterior/fisiología , Artralgia/fisiopatología , Estimulación Eléctrica , Articulación de la Rodilla/fisiología , Tibia/fisiología , Adulto , Ligamento Cruzado Anterior/fisiopatología , Artralgia/rehabilitación , Ejercicio Físico/fisiología , Voluntarios Sanos , Humanos , Articulación de la Rodilla/fisiopatología , Masculino , Movimiento/fisiología , Rango del Movimiento Articular , Adulto Joven
15.
J Rehabil Med ; 44(2): 125-30, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22266658

RESUMEN

OBJECTIVE: To investigate the predictors related to upper extremity functional recovery, with special emphasis on neuromuscular electrical stimulation dose-response in patients after stroke. SUBJECTS: Ninety-five patients with stroke who received a 4-week neuromuscular electrical stimulation intervention. DESIGN: Prospective predictive analysis. METHODS: The change score of the Action Research Arm Test (ARAT) was used as the main outcome. Baseline subject characteristics, stroke-related data, and intervention-related data were collected. Multiple linear regression analysis was applied to identify the potential predictors related to main outcome. RESULTS: The regression model revealed that the initial Fugl-Meyer upper limb score was the most important predictor for ARAT change score post-test, followed by time since stroke onset and location of stroke lesion. At 2-month follow-up, the neuromuscular electrical stimulation dosage became a significant determinant in addition to the above predictors. CONCLUSION: Initial motor severity and lesion location were the main predictors for upper limb functional improvement in stroke patients. Neuromuscular electrical stimulation dosage became a significant determinant for upper limb functional recovery after stroke at 2-month follow-up. More intensive neuromuscular electrical stimulation therapy during early rehabilitation is associated with better upper limb motor function recovery after stroke.


Asunto(s)
Terapia por Estimulación Eléctrica/métodos , Paresia/rehabilitación , Recuperación de la Función/fisiología , Rehabilitación de Accidente Cerebrovascular , Extremidad Superior/fisiopatología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Paresia/etiología , Estudios Prospectivos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/fisiopatología , Resultado del Tratamiento
16.
Neurorehabil Neural Repair ; 26(1): 68-75, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21952197

RESUMEN

BACKGROUND: Individuals with incomplete spinal cord injury (SCI) are predisposed to muscle fatigue during voluntary exercise. However, the origin of fatigue is unclear. OBJECTIVE: The authors examined the motoneuron excitability, muscle activation level, and fatigue properties of the flexor carpi radialis muscle, just below the level of injury. METHODS: Nine individuals with chronic, incomplete cervical cord injury and 9 age-matched healthy individuals were recruited. The authors tested maximum voluntary contraction (MVC), motoneuron excitability by the maximum amplitude of the H-reflex (Hmax at C-7), and muscle voluntary activation level measured by the interpolated twitch technique. Subjects were fatigued by repetitive maximal voluntary isometric wrist flexion. General fatigue index (GFI), central fatigue index (CFI), and peripheral fatigue index (PFI) of flexor carpi radialis were examined before, during, and immediately after exercise. RESULTS: The Hmax in the SCI group was significantly higher (P = .0028) than in controls. The MVC (P < .001) and voluntary activation level (P = .016) in the SCI group were significantly lower. The GFI and CFI decreased in both the SCI and the non-SCI groups. The PFI in the SCI group was significantly higher (ie, less fatigue) than that in controls at 30 repetitive contractions. CONCLUSIONS: In individuals with incomplete SCI, the deficit in central drive is an important source of muscle weakness and fatigue in the muscle below the level of injury.


Asunto(s)
Reflejo H/fisiología , Neuronas Motoras/fisiología , Contracción Muscular/fisiología , Fatiga Muscular/fisiología , Músculo Esquelético/fisiopatología , Traumatismos de la Médula Espinal/fisiopatología , Adulto , Estudios de Casos y Controles , Vértebras Cervicales , Electromiografía , Femenino , Antebrazo , Humanos , Masculino , Persona de Mediana Edad , Debilidad Muscular/fisiopatología , Reclutamiento Neurofisiológico/fisiología
17.
J Med Syst ; 36(3): 1327-34, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20852921

RESUMEN

Healthcare services integration is a critical task as it attempts to reform the user practices. In response to the request of facilities upgrade, we perform a usability evaluation of the mobile medical treatment carts (MMTC) installed in the Emergency Medicine Department of our healthcare enterprise. A survey conducted in August 2006 identified that our experimental area needs some improvements to support the MMTC adoption. For example, the MMTC can accompany with several popular nursing care items. Follow-up several undertaken investigations indicated that our expectation of the MMTC solution had been reached. Given the evident heterogeneity of viewpoints, it is imperative for a healthcare enterprise to broadly ascertain the requirements of end users before investing in any information technologies.


Asunto(s)
Informática Médica/instrumentación , Telecomunicaciones , Servicio de Urgencia en Hospital , Encuestas de Atención de la Salud , Gestión de la Información , Personal de Enfermería en Hospital , Taiwán , Interfaz Usuario-Computador
18.
Artículo en Inglés | MEDLINE | ID: mdl-23366705

RESUMEN

The EMG signal is a well-known and useful biomedical signal. Much information related to muscles and human motions is included in EMG signals. Many approaches have proposed various methods that tried to recognize human motion via EMG signals. However, one of the critical problems of motion pattern recognition is that the performance of recognition is easily affected by the normalization procedure and may not work well on different days. In this paper, a modified feature of the multi-channel EMG signal is proposed and the normalization procedure is also simplified by using this modified feature. To recognize motion pattern, we applied the support vector machine (SVM) to build the motion pattern recognition model. In training and validation procedures, we used the 2-DoF exoskeleton robot arm system to do the designed pose, and the multi-channel EMG signals were obtained while the user resisted the robot. Experiment results indicate that the performance of applying the proposed feature (94.9%) is better than that of conventional features. Moreover, the performances of the recognition model, which applies the modified feature to recognize the motions on different days, are more stable than other conventional features.


Asunto(s)
Brazo/fisiología , Electromiografía/métodos , Patrones de Reconocimiento Fisiológico , Rango del Movimiento Articular , Humanos , Procesamiento de Señales Asistido por Computador
19.
Biomed Opt Express ; 2(6): 1462-9, 2011 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-21698010

RESUMEN

Since neovascularization has been reported that it is associated with tendinopathy, assessments of vascularity are important for both diagnosis and treatment estimation. Photoacoustic imaging, taking the advantages of good ultrasonic resolution and high optical absorption contrast, has been shown a promising tool for vascular imaging. In this study, we explore the feasibility of photoacoustic micro-imaging in noninvasive monitoring of microvascular changes in Achilles tendon injuries on a mouse model in vivo. During collagenase-induced tendinitis, a 25-MHz photoacoustic microscope was used to image microvascular changes in Achilles tendons of mice longitudinally up to 23 days. In addition, complementary tissue structural information was revealed by collateral 25-MHz ultrasound microscopy. Morphological changes and proliferation of new blood vessels in Achilles tendons were observed during and after the acute inflammation. Observed microvascular changes during tendinitis were similar to the findings in the literatures. This study demonstrates that photoacoustic imaging can potentially be a complementary tool for high sensitive diagnosis and assessment of treatment performance in tendinopathy.

20.
IEEE Int Conf Rehabil Robot ; 2011: 5975367, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-22275571

RESUMEN

Cerebral vascular disease (or stroke) is the main cause of disabilities in adults. Upper-limb dysfunction after stroke usually exists, leading to severe limits of motor capabilities as well as daily activities. Therefore, effective treatment interventions for upper-limb rehabilitation after stroke are needed. Based on the neurophysiological evidence and clinical measures, combined bilateral arm training (BAT) with functional electric stimulation (FES) could improve hand function in stroke patients. In this study, we attempt to combine BAT with FES applying to the post-stroke paretic arm. A linear guide platform with FES feedback control was developed to execute the training of bilateral reaching movements. 35 stroke subjects were recruited and divided into two groups (BAT with FES and BAT alone). 23 participants completed this experiment with 3-week intervention. According to our preliminary results, a favorable trend toward improvement in experimental group (BAT with FES) existed after treatment and at follow-up. Further analysis would be conducted to investigate the kinematic change on motor performance. Moreover, various treatment doses as well as more functional approaches would also be considered for better effects of upper limb rehabilitation after stroke.


Asunto(s)
Brazo/fisiología , Estimulación Eléctrica/métodos , Rehabilitación de Accidente Cerebrovascular , Extremidad Superior/fisiología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...