Relationship between Corticospinal Excitability While Gazing at the Mirror and Motor Imagery Ability.

Mirror therapy (MT) helps stroke survivors recover motor function. Previous studies have reported that an individual's motor imagery ability is related to the areas of brain activity during motor imagery and the effectiveness of motor imagery training. However, the relationship between MT and motor imagery ability and between corticospinal tract excitability during mirror gazing, an important component of MT, and motor imagery ability is unclear. This study determined whether the motor-evoked potential (MEP) amplitude while gazing at the mirror relates to participants' motor imagery abilities. Twenty-four healthy right-handed adults (seven males) were recruited. Transcranial magnetic stimulation was performed while gazing at the mirror, and MEP of the first dorsal interosseous muscle of the right hand were measured. Motor imagery ability was measured using the Kinesthetic and Visual Imagery Questionnaire (KVIQ), which assesses the vividness of motor imagery ability. Additionally, a mental chronometry (MC) task was used to assess time aspects. The results showed a significant moderate correlation between changes in MEP amplitude values while gazing at the mirror, as compared with resting conditions, and assessment scores of KVIQ. This study shows that corticospinal excitability because of mirror gazing may be related to the vividness of motor imagery ability.

Difference between the Effects of Peripheral Sensory Nerve Electrical Stimulation on the Excitability of the Primary Motor Cortex: Examination of the Combinations of Stimulus Frequency and Duration.

Peripheral sensory nerve electrical stimulation (PES) excites the primary motor cortex and is expected to improve motor dysfunction post-stroke. However, previous studies have reported a variety of stimulus frequencies and stimulus duration settings, and the effects of these different combinations on primary motor cortex excitability are not clear. We aimed to clarify the effects of different combinations of stimulus frequency and stimulus duration of PES on the excitation of primary motor cortex. Twenty-one healthy individuals (aged > 18 years, right-handed, and without a history of neurological or orthopedic disorders) were included. Each participant experienced three different stimulation frequencies (1, 10 and 50 Hz) and durations (20, 40 and 60 min). Motor-evoked potentials (MEPs) were recorded pre- and post-PES. The outcome measure was the change in primary motor cortex excitability using the MEP ratio. We used a D-optimal design of experiments and response surface analysis to define the optimal combination within nine different settings inducing more satisfying responses. The combination of stimulation frequency and stimulation time that maximized the desirability value was 10 Hz and 40 min, respectively. The results of this study may provide fundamental data for more minimally invasive and effective implementation of PES in patients with stroke.

The prevalence and course of neuropsychiatric symptoms in stroke patients impact functional recovery during in-hospital rehabilitation.

BACKGROUND: Neuropsychiatric symptoms are common after stroke and are distressing symptoms. They may persist after the acute event and negatively impact rehabilitation, functioning, and patients' quality of life. OBJECTIVES: To elucidate the prevalence and course of neuropsychiatric symptoms in stroke patients during rehabilitation, we prospectively investigated the trajectory change of neuropsychiatric symptoms and the association between these symptoms and functional recovery. METHODS: This observational study enrolled 204 stroke patients consecutively admitted to the rehabilitation ward. We administered the Neuropsychiatric Inventory-Nursing Home Version (NPI-NH) for evaluating the neuropsychiatric symptoms (e.g., apathy and depression) and the Functional Independence Measure (FIM) and Montebello Rehabilitation Factor Score (MRFS) for functional recovery. RESULTS: The cumulative prevalence of neuropsychiatric symptoms was 48% during hospitalization; depression, anxiety, and sleep disturbances were most frequent. Binomial logistic regression analyses revealed that the factors associated with deterioration of neuropsychiatric symptoms during hospitalization included premorbid depression (odds ratio: 18.628, P = .001), the length of stay from onset to rehabilitation ward admission (odds ratio: 1.022, P = .012), motor FIM at admission (odds ratio: 0.950, P < .001), and NPI-NH at admission (odds ratio: 0.923, P = .011). Stepwise multiple regression analyses revealed that the NPI-NH at admission was associated with the MRFS (ß = -0.128, P = .037). CONCLUSION: Neuropsychiatric symptoms are common in stroke patients undergoing rehabilitation and have a substantially negative impact on rehabilitation outcomes. Stroke patients with prolonged acute-phase hospitalization and low functioning at admission must be monitored to detect any deterioration in the neuropsychiatric state.

Effects of occupational therapy on improvements in the handwriting ability of the adult non-dominant hand: An exploratory randomised controlled trial.

INTRODUCTION: Occupational therapy often involves handwriting acquisition practices that include the non-dominant hand when improvements in the dominant hand function are not possible because of trauma or stroke. This study explored whether character tracing and using a pegboard can effectively improve the handwriting of the non-dominant hand. METHODS: A randomised controlled trial involving 60 healthy university students aged ≥18 years was conducted. Participants were randomly assigned to the writing group, peg group or control group. The character recognition rate was evaluated by computer software. Furthermore, character quality and writing speed were evaluated by humans using global legibility scales. Evaluations were performed before the intervention (baseline) and on days 5 and 10 of the intervention. Using the non-dominant hand, the writing group traced characters on paper with a ballpoint pen, and the peg group used a pegboard for 15 min/day for 10 days. RESULTS: Compared with the peg and control groups, the writing group showed significant improvements in the character recognition rate and global legibility scale score. However, the global legibility scale score did not improve to the same level as that achieved with the dominant hand. None of the evaluation scores of the peg group showed significant improvements compared with those of the control group. There were no significant differences in improvements in the writing speed of the writing and peg groups compared with the control group. CONCLUSION: Tracing characters can improve the handwriting ability of the non-dominant hand, but using a pegboard may be less effective. Future research is needed to examine how much practice is necessary to improve the handwriting ability of the non-dominant hand sufficiently.

Sex differences in serum levels of 5α-androstane-3ß, 17ß-diol, and androstenediol in the young adults: A liquid chromatography-tandem mass spectrometry study.

Animal experiments have consistently shown that estrogen receptor ß (ERß)-selective ligands have antidepressant and anxiolytic effects. In humans, endogenous ligands for ERß include 5α-androstane-3ß, 17ß-diol (3ßAdiol) and androstenediol (Δ5-diol). We determined, for the first time, the exact serum levels of 3ßAdiol and Δ5-diol in young healthy volunteers using liquid chromatography-tandem mass spectrometry (LC-MS/MS). We investigated the effect of the menstrual cycle on the levels of these steroids in women; then, we performed a gender comparison. Blood samples were collected from 48 subjects: 23 women (mean age = 28.4±7.8 years) and 25 men (mean age = 31.4±7.8 years). We collected the blood samples of women at three time-points in the menstrual cycle: the early follicular phase, ovulatory or mid-cycle phase, and mid-luteal phase. A total of 92 blood samples were analyzed using LC-MS/MS. The levels of two well-studied steroids, namely dehydroepiandrosterone (DHEA) and 17ß-estradiol (E2), were simultaneously measured. Depression rating scale (Hamilton Rating Scale for Depression, Beck Depression Inventory-II and Quick Inventory of Depressive Symptomatology) scores were also recorded at the time of blood sampling. Significant differences in the levels of 3ßAdiol and E2 and in the depression rating scale scores were observed over the duration of the menstrual cycle of the women. The levels of 3ßAdiol and Δ5-diol were significantly lower in women than in men. E2 levels were higher in women than in men, and DHEA levels did not differ significantly between men and women. Further, women had higher scores than men on the Hamilton Rating Scale for Depression. Sex differences in depressive symptoms can be explained by 3ßAdiol and Δ5-diol levels, and the effect of the menstrual cycle on mood can be explained by 3ßAdiol and E2 levels, not by Δ5-diol level.

Decreased activities of daily living at discharge predict mortality and readmission in elderly patients after cardiac and aortic surgery: A retrospective cohort study.

ABSTRACT: Recently, activities of daily living (ADL) were identified as a prognostic factor among elderly patients with heart disease; however, a specific association between ADL and prognosis after cardiac and aortic surgery is not well established. We aimed to clarify the impact of ADL capacity at discharge on prognosis in elderly patients after cardiac and aortic surgery.This retrospective cohort study included 171 elderly patients who underwent open operation for cardiovascular disease in a single center (median age: 74 years; men: 70%). We used the Barthel Index (BI) as an indicator for ADL. Patients were classified into 2 groups according to the BI at discharge, indicating a high (BI ≥ 85) or low (BI < 85) ADL status. All-cause mortality and unplanned readmission events were observed after discharge.Thirteen all-cause mortality and 44 all-cause unplanned readmission events occurred during the median follow-up of 365 days. Using Kaplan-Meier analysis, a low ADL status was determined to be significantly associated with all-cause mortality and unplanned readmission. In the multivariable Cox proportional hazard models, a low ADL status was an independent predictor of all-cause mortality and unplanned readmission after adjusting for age, sex, length of hospital stay, and other variables (including preoperative status, surgical parameter, and postoperative course).A low ADL status at discharge predicted all-cause mortality and unplanned readmission in elderly patients after cardiac and aortic surgery. A comprehensive approach from the time of admission to postdischarge to improve ADL capacity in elderly patients undergoing cardiac and aortic surgery may improve patient outcomes.

Cerebral Hemodynamics During a Cognitive-Motor Task Using the Limbs.

Background: Antagonistic tasks are cognitive-motor task trainings. Intervention programs involving antagonistic exercise tasks are being employed to help prevent falls and reduce the need for nursing care in older populations. Meanwhile, the effects of such tasks on blood flow in the brain remain obscure. This study aimed to clarify the effects of antagonistic tasks on prefrontal cortical cerebral hemodynamics. Materials and Methods: We assessed 13 healthy adults (two men, 11 women; mean age, 21.4 ± 1.0 years). Participants imitated each of the antagonistic tasks presented on a PC monitor placed at a 120-mm viewing distance. All participants performed six tasks, consisting of upper-limb tasks (non-antagonism, simple antagonism, and complex antagonism) and upper- and lower-limb tasks (tasks combining lower-limb opening and closing movements with each upper-limb task). We used near-infrared spectroscopy (NIRS) to measure cerebral blood flow dynamics, with oxygenated hemoglobin (Oxy-Hb) concentration changes as the main outcome. A 10-channel probe was placed on the participants' forehead, focusing on the prefrontal cortex. We first obtained a baseline NIRS measurement for 10 s; the participants then imitated the task presented on the PC monitor for 90 s. We measured the number of errors and the subjective difficulty of each task. Results: The increase in prefrontal cortex Oxy-Hb concentration was significantly higher in the complex antagonist conditions than in the non-antagonistic and simple antagonistic conditions. There were no significant prefrontal cortex Oxy-Hb differences between the upper limb and upper- and lower-limb conditions (increasing number of motor limbs). Conclusions: The study findings support that an increase in finger-shaped complexity has a greater effect on cerebral blood flow dynamics in the prefrontal cortex than does an increase in the number of motor limbs involved in the task.

Effects of peripheral nerve stimulation on paralysed upper limb functional recovery in chronic stroke patients undergoing low-frequency repetitive transcranial magnetic stimulation and occupational therapy: A pilot study.

OBJECTIVE: Upper limb paralysis, which is a sequela of stroke, limits patients' activities of daily living and lowers quality of life. The objective of this study was to examine the effects of peripheral nerve stimulation on hemiparetic upper limb functional recovery in chronic stroke patients undergoing low-frequency repetitive transcranial magnetic stimulation and occupational therapy. METHODS: The subjects were chronic stroke patients who participated in a two-week inpatient programme including repetitive transcranial magnetic stimulation and occupational therapy. There were two groups of patients: the peripheral nerve stimulation group (11 patients who underwent peripheral nerve stimulation) and the control group (11 patients who previously participated in the same inpatient programme but without peripheral nerve stimulation, selected via propensity score matching). The peripheral nerve stimulation group had 1 h of peripheral nerve stimulation on the median and ulnar nerves during occupational therapy. The outcome measures were the Wolf Motor Function Test, Fugl-Meyer Assessment, and Motor Activity Log. RESULTS: Wolf Motor Function Test, Fugl-Meyer Assessment, and Motor Activity Log showed significant improvement after the intervention in the peripheral nerve stimulation group. Particularly, the Fugl-Meyer Assessment hand score significantly improved in the peripheral nerve stimulation group compared to that in the control group (median change: 2 versus 0; p = 0.021, r = 0.49). CONCLUSION: The combined use of peripheral nerve stimulation with occupational therapy after repetitive transcranial magnetic stimulation may result in a better functional recovery of in hemiparetic upper limb. Peripheral nerve stimulation with stimulation above the sensory threshold and below the motor threshold is easy to combine with occupational therapy upper limb function training and is therefore clinically useful.

Effects of liaison between physiotherapists and occupational therapists for home-visit rehabilitation: preliminary study.

[Purpose] Home-visit rehabilitation is used to restructure patients' home lives and involves comprehensive intervention. In Japan, liaison between physiotherapists and occupational therapists occurs, but impact of this cooperation is unclear. The present study aimed to investigate therapeutic efficacy of this liaison. [Participants and Methods] The study used a cross-sectional design. Participants were community-dwelling older adults who required long-term care and were receiving home-visit rehabilitation provided in the Chubu region. They were divided into a single-intervention group with either physiotherapy or occupational therapy alone, and a liaison-intervention group with therapy coordinated between the 2 professions. In addition to basic information, the Barthel Index, Frenchay Activities Index, Health Utility Index Mark 3, and subjective health assessments were evaluated. [Results] Eighteen participants were recruited. No significant differences were observed between groups for the Barthel Index, whereas the total Frenchay Activities Index score and items of the Frenchay Activities Index (outdoor domestic chores and outdoor activities) were significantly higher in the liaison-intervention group. The emotion item in the Health Utility Index Mark 3 and subjective health assessments were also significantly higher in the liaison-intervention group. [Conclusion] These findings suggest that this liaison is effective for improving activities of daily living and increasing quality of life. This is probably due to each therapist performing a specialized intervention and professional cooperation.

Relationship of Malnutrition During Hospitalization With Functional Recovery and Postdischarge Destination in Elderly Stroke Patients.

AIM: Malnutrition during hospitalization affects the functional recovery and postdischarge destinations of elderly stroke patients. However, insufficient studies exist about nutritional status during hospitalization in the acute stroke phase in this population. This study determined factors of nutritional status changes during hospitalization in elderly patients in the acute phase of stroke, and investigated the relationship between nutritional status changes and improved activities of daily living and postdischarge destination. METHODS: This retrospective observational study included 205 acute-phase stroke patients admitted to Shinshu University Hospital from 2010-2016. Multiple regression analysis was conducted to determine relationships between nutritional status changes, patient characteristics, and improved activities of daily living. Binomial logistic regression analysis was used to determine the relationship between the postdischarge destination and nutritional status changes. RESULTS: Prevalence of malnutrition was 42% at admission and 76% at discharge. Factors affecting nutritional status changes at admission included Geriatric Nutritional Risk Index (ß = -0.35, P < .001) and Barthel Index/feeding (ß = 0.22, P = .002), and factors during hospitalization included age (ß = -0.21, P < .001), ischemic stroke (ß = 0.16, P = .008), and National Institute of Health Stroke Scale score (ß = -0.29, P < .001). Significant associations of changes in geriatric nutritional risk index occurred with improved activities of daily living during hospitalization (ß = 0.26, P < .001) and discharge to home (odds ratio = 1.11, 95% confidence interval: 1.03-1.19, P = .008). CONCLUSION: Many elderly patients in the acute phase of stroke with malnutrition exhibited worsening conditions during hospitalization, which was negatively associated with their activities of daily living abilities and postdischarge destinations. Nutritional status changes and associated factors must be evaluated during hospitalization in this patient population.

Functional outcomes of inpatient rehabilitation in very elderly patients with stroke: differences across three age groups.

Background As the population continues to age rapidly, clarifying the factors affecting the prognosis in very elderly stroke patients is essential to enhance the quality of their rehabilitation. Objectives To compare the functional recovery of elderly stroke patients classified into three age groups and to identify the predictors of functional recovery in the very elderly following acute inpatient rehabilitation. Methods Observational study: We collected data on 461 stroke patients in the neurology and neurosurgery ward and classified them into three age groups (65-74, 75-84, and ≥ 85 years). Functional recovery was compared among groups using the functional independence measure (FIM) at discharge and ADL recovery rate was compared using the Montebello rehabilitation factor score (MRFS). Multiple regression analysis was used to identify and compare the factors associated with functional recovery in each age group. Results Functional recovery in the ≥ 85 years group was lower than that in other age groups. Factors associated with activities of daily living (ADL) status (FIM at discharge) in the ≥ 85 years group were premorbid dependence (ß = -0.183, p = 0.011), motor paralysis (ß = -0.238, p = 0.001), and cognitive function (ß = 0.586, p < 0.001). Furthermore, the impact of cognitive function grew as age increased. Factors associated with ADL recovery rates (MRFS) in the ≥ 85 years group were non-paretic limb function (ß = -0.294, p = 0.004) and cognitive function (ß = 0.201, p = 0.047). Conclusions This study identified the factors associated with functional recovery among very elderly stroke patients. Effective forms of rehabilitation for very elderly stroke patients that take these factors into consideration need to be investigated.

Factors associated with multidimensional aspect of post-stroke fatigue in acute stroke period.

BACKGROUND: Post-stroke fatigue (PSF) is a frequent and distressing consequence of stroke, and can be both acute and long lasting. We aimed to investigate multidimensional aspects of acute PSF and to determine the clinical factors relevant to acute PSF. METHODS: We collected data of 101 patients admitted to the hospital for acute stroke. PSF was assessed using the Multidimensional Fatigue Inventory within 2 weeks of stroke. Measures included Mini-Mental State Examination, Hospital Anxiety and Depression Scale, and Functional Independence Measure. Stroke character, lesion location, and clinical variables that potentially influence PSF were also collected. RESULTS: The prevalence of pathological fatigue is 56.4% within 2 weeks of stroke. Binary logistic regression analysis revealed that anxiety was the only predictor for presence of PSF (OR=1.32, 95% CI: 1.13-1.53, P<0.001). Multivariate stepwise regression analysis showed anxiety, right lesion side, thalamus, and/or brainstem were independently associated with general fatigue, right lesion side, depression, diabetes mellitus, and anxiety with physical fatigue, depression with reduced activity, depression, and BMI with reduced motivation, depression, and diabetes mellitus with mental fatigue. CONCLUSIONS: PSF was highly prevalent in the acute phase, and specific factors including lesion location (right side lesion, thalamic and brainstem lesion), anxiety, and depression were independently associated with multidimensional aspects of PSF. Further study is needed to elucidate how specific structural lesions and anxiety symptoms relate to the development of early fatigue following stroke.

Longitudinal functional changes, depression, and health-related quality of life among stroke survivors living at home after inpatient rehabilitation.

AIM: This study investigated changes in functional status in home-dwelling stroke survivors 1-3 years after inpatient rehabilitation. It also examined the factors associated with longitudinal functional changes and health-related quality of life. METHODS: Survey evaluations were conducted at the homes of 27 stroke survivors. The Functional Independence Measure (FIM), Short Form 36, Frenchay Activities Index, and Hamilton Depression Rating Scale were used to assess functional status, quality of life, social activity, and depression symptoms, respectively. RESULTS: From the time of discharge to follow-up (mean: 2.1 ± 0.6 years), total FIM and motor FIM scores were mildly improved, and cognitive FIM score was significantly improved. On the Short Form 36, physical functioning, general health, and vitality scores were lower than norm-based scores. Multiple regression analyses showed a positive association between change in motor FIM score and Frenchay Activities Index score and a negative association between change in cognitive FIM score and elapsed time after discharge. With regard to health-related quality of life, motor FIM score was associated with the physical component summary, whereas age and Hamilton Depression Rating Scale score were associated with the mental component summary. CONCLUSION: Social participation was associated with long-term improvement in activities of daily living, indicating that interventions targeting social function are important for maintaining and further improving activities of daily living in stroke survivors. Health-related quality of life was correlated with activities of daily living and depression; therefore, interventions targeting these parameters are important in improving the quality of life of stroke survivors.

Long-term outcome in stroke survivors after discharge from a convalescent rehabilitation ward.

AIM: The aim of this study was to investigate the long-term mortality, daily living activities, social activity, and symptoms of depression, in post-stroke patients discharged to their homes from a convalescent rehabilitation ward, and to determine the relationship between demographic variables and long-term outcome. METHODS: This study included 252 consecutive stroke patients (140 men; mean age, 72.4 ± 10.8 years) who had been admitted to a convalescent rehabilitation ward for inpatient rehabilitation. Follow-up assessment was made by postal questionnaire for up to >1 year after discharge, and included the modified Rankin scale, Frenchay activities index (FAI), and Geriatric Depression Scale. RESULTS: Of the 192 respondents (76.2%), 160 (83.3%) were living at home. Eighty-three (51.8%) were independent. Cumulative post-stroke mortality at 1 and 3 years was 3.7% and 19.4%, respectively.Mean total FAI score was 26.5 ± 10.9, suggesting that social inactivity was common. The estimated prevalence of depression was 21.6%. Coronary artery disease and motor functional independence measures were significantly associated with mortality, whereas age, recurrent stroke, severity of paralysis, and motor functional independence measures were significant predictors of independence. In the cross-sectional logistic model, depression symptoms were inversely associated with FAI score. CONCLUSIONS: The mortality rate of patients discharged to their home following inpatient rehabilitation is relatively low. Social inactivity and depression symptoms, however, remain common during the chronic phase, and the severity of depression and restriction of participation were interrelated.

Factors associated with functional recovery and home discharge in stroke patients admitted to a convalescent rehabilitation ward.

AIMS: This study aimed to determine the predictive factors for functional recovery and home discharge in stroke patients receiving in-hospital rehabilitation. METHODS: This study included a consecutive series of 174 stroke patients (average age 73.0 ± 10.8) admitted to the convalescent rehabilitation ward at Azumino Red Cross Hospital in Japan after acute rehabilitation. The main outcome measures were functional recovery (functional independence measure [FIM] at discharge and Montebello rehabilitation factor score [MRFS]) and home discharge. RESULTS: Total FIM improved from 72.6 ± 27.6 to 87.7 ± 29.9 during the hospital stay (P < 0.001). The average MRFS was 0.30 ± 0.28. Of the 174 patients, 151 were discharged home (87%). Age, stroke type, premorbid independence, motor FIM, and cognitive FIM at admission showed a significant association with FIM at discharge, while age, premorbid independence, motor FIM at admission, and cognitive FIM at admission were statistically significant predictors of MRFS. Female sex, not living with family, premorbid independence, and neglect were negatively associated with home discharge. CONCLUSIONS: Premorbid disability and cognitive dysfunction at admission were both negatively associated with functional recovery and home discharge in patients undergoing inpatient stroke rehabilitation.

Evaluating the quality of life of people with dementia in residential care facilities.

AIMS: Our purpose was to compare recipient and caregiver perception of the quality of life (QoL) of people with dementia in residential care facilities and to identify the factors associated with their perception of QoL. METHODS: Residents' QoL was evaluated by both the patient and the caregiver, using the Quality of Life in Alzheimer's Disease and several other indices. RESULTS: The correlation between the self-rated QoL score and the staff-rated QoL score was low. CONCLUSIONS: The staff tended to underestimate QoL. The main determinants of QoL were the functional status and depression. Improving physical function and mood may be beneficial in providing a better QoL.