Psychometric properties of wearable technologies to assess post-stroke gait parameters: A systematic review.

BACKGROUND: Wearable technologies using inertial sensors are an alternative for gait assessment. However, their psychometric properties in evaluating post-stroke patients are still being determined. This systematic review aimed to evaluate the psychometric properties of wearable technologies used to assess post-stroke gait and analyze their reliability and measurement error. The review also investigated which wearable technologies have been used to assess angular changes in post-stroke gait. METHODS: The present review included studies in English with no publication date restrictions that evaluated the psychometric properties (e.g., validity, reliability, responsiveness, and measurement error) of wearable technologies used to assess post-stroke gait. Searches were conducted from February to March 2023 in the following databases: Cochrane Central Registry of Controlled Trials (CENTRAL), Medline/PubMed, EMBASE Ovid, CINAHL EBSCO, PsycINFO Ovid, IEEE Xplore Digital Library (IEEE), and Physiotherapy Evidence Database (PEDro); the gray literature was also verified. The Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) risk-of-bias tool was used to assess the quality of the studies that analyzed reliability and measurement error. RESULTS: Forty-two studies investigating validity (37 studies), reliability (16 studies), and measurement error (6 studies) of wearable technologies were included. Devices presented good reliability in measuring gait speed and step count; however, the quality of the evidence supporting this was low. The evidence of measurement error in step counts was indeterminate. Moreover, only two studies obtained angular results using wearable technology. SIGNIFICANCE: Wearable technologies have demonstrated reliability in analyzing gait parameters (gait speed and step count) among post-stroke patients. However, higher-quality studies should be conducted to improve the quality of evidence and to address the measurement error assessment. Also, few studies used wearable technology to analyze angular changes during post-stroke gait.

Physical therapy for the management of global function, fatigue and quality of life in amyotrophic lateral sclerosis: systematic review and meta-analyses.

OBJECTIVES: To critically evaluate the effectiveness of physical therapy interventions in improving global function, quality of life and fatigue in individuals with amyotrophic lateral sclerosis (ALS). DESIGN: Systematic review and meta-analyses. DATA SOURCES: MEDLINE, EMBASE, Cochrane Library (CENTRAL) and Physiotherapy Evidence Database (PEDro) were searched through 31 January 2023. ELIGIBILITY CRITERIA: We included randomised clinical trials (RCTs) that compared physical therapy interventions that act on global function, fatigue and quality of life in individuals with ALS with any other non-physiotherapeutic methods and techniques, placebo or non-intervention. The primary outcome measure was the evaluation of global function. Secondary outcomes were quality of life, fatigue and adverse events. DATA EXTRACTION AND SYNTHESIS: Two independent authors used a researcher-developed extraction form and the Rayyan software to search, screen and code included studies. The risk of bias was assessed using the PEDro scale. Meta-analyses were conducted employing random effects. Outcomes were succinctly presented in Grading of Recommendations, Assessment, Development and Evaluation evidence profiles. RESULTS: Our searches identified 39 415 references. After study selection, three studies were included in the review. Such studies involved 62 participants with a mean age of 54.6 years. In the evaluated trials, 40 were male, while 22 participants were female. Regarding the type of onset of the disease, 58 participants had spinal onset of ALS, and four had bulbar. CONCLUSIONS: Physical therapy intervention may improve the global function of individuals with ALS in the short term; however, clinically, it was inconclusive. In terms of quality of life and fatigue, physical therapy intervention is not more effective than control in the short term. Adverse events are not increased by physical therapy intervention in the short term. Due to significant methodological flaws, small sample sizes, wide CIs and clinical interpretation, our confidence in the effect estimate is limited. PROSPERO REGISTRATION NUMBER: CRD42021251350.

Physical therapy for muscle strengthening in individuals with amyotrophic lateral sclerosis: A protocol for a systematic review and meta-analysis.

INTRODUCTION: People with Amyotrophic Lateral Sclerosis (ALS) can present initially muscle weakness, which is a debilitating symptom that may be improved by engaging in muscle strengthening activities. Currently, the effects of motor interventions for muscle strengthening in people with ALS are unclear. This review intends to analyze the effects of motor interventions for muscle strengthening in individuals with ALS. METHODS AND ANALYSIS: Randomized, non-randomized, and quasi-experimental clinical trials assessing individuals with ALS of both sexes, aged 18 years or older, who have received motor interventions for muscle strengthening considering all practices that can lead to increased strength, endurance, power and muscular hypertrophy will be included. No restriction on language, location, or publication date will be applied. MEDLINE, EMBASE, Cochrane Library (CENTRAL), SPORTDiscus, and Physiotherapy Evidence Database (PEDro) databases will be searched. The US National Institutes of Health Ongoing, ClinicalTrials.gov, and the reference lists of included studies will also be searched. Two reviewers will independently screen titles and abstracts and extract data from included studies. The methodological quality of the included studies will be assessed by the PEDro scale and the certainty of the evidence by the GRADE approach. Disagreements will be resolved by a third researcher. Findings will be presented in text and table formats. A meta-analysis will compare the effects of motor interventions for muscle strengthening versus placebo or other interventions.

Correction: Efficacy of early cardiac rehabilitation after acute myocardial infarction: Randomized clinical trial protocol.

[This corrects the article DOI: 10.1371/journal.pone.0296345.].

Assessment of the Clinical and Functional Health Status of Patients with Amyotrophic Lateral Sclerosis during the COVID-19 Pandemic in Brazil Using Telemedicine.

This study aimed to monitor the clinical and functional progression of patients with amyotrophic lateral sclerosis (ALS) and adjust ventilatory support during the COVID-19 pandemic in Brazil using telemedicine. This longitudinal case series included five evaluations from January 2019 to June 2021. The first and second assessments were performed in person and consisted of pulmonary function, respiratory muscle strength, functionality (ALS Functional Rating Scale-Revised [ALSFRS-R]) and disease staging (King's College criteria). The use of non-invasive ventilation (NIV), ALSFRS-R, and disease staging were assessed in the third, fourth, and fifth assessments during the COVID-19 pandemic, using telemedicine. The rate of functional decline was calculated by the difference in the total score of ALSFRS-R between evaluations. A cutoff of 0.77 in the ALSFRS-R was used to characterize the speed of functional decline. Eleven patients (mean age of 51 years, eight males) were assessed. The total score of the ALSFRS-R (p < 0.01) and its motor domain (p < 0.01) reduced significantly during the pandemic. NIV prescription increased from 54.4% to 83.3%. Telemedicine helped with the clinical and functional follow-up of patients with ALS.

Efficacy of early cardiac rehabilitation after acute myocardial infarction: Randomized clinical trial protocol.

The acute myocardial infarction (AMI) present high mortality rate that may be reduced with cardiac rehabilitation. Despite its good establishment in outpatient care, few studies analyzed cardiac rehabilitation during hospitalization. Thus, this study aims to clarify the safety and efficacy of early cardiac rehabilitation after AMI. This will be a clinical, controlled, randomized trial with blind outcome evaluation and a superiority hypothesis. Twenty-four patients with AMI will be divided into two groups (1:1 allocation ratio). The intervention group will receive an individualized exercise-based cardiac rehabilitation protocol during hospitalization and a semi-supervised protocol after hospital discharge; the control group will receive conventional care. The primary outcomes will be the cardiac remodeling assessed by cardiac magnetic resonance imaging, functional capacity assessed by maximal oxygen consumption, and cardiac autonomic balance examined via heart rate variability. Secondary outcomes will include safety and the total exercise dose provided during the protocol. Statistical analysis will consider the intent-to-treat analysis. Trial registration. Trial registration number: Brazilian Registry of Clinical Trials (ReBEC) (RBR- 9nyx8hb).

Clinical applications of neurofeedback based on sensorimotor rhythm: a systematic review and meta-analysis.

Background: Among the brain-machine interfaces, neurofeedback is a non-invasive technique that uses sensorimotor rhythm (SMR) as a clinical intervention protocol. This study aimed to investigate the clinical applications of SMR neurofeedback to understand its clinical effectiveness in different pathologies or symptoms. Methods: A systematic review study with meta-analysis of the clinical applications of EEG-based SMR neurofeedback performed using pre-selected publication databases. A qualitative analysis of these studies was performed using the Consensus tool on the Reporting and Experimental Design of Neurofeedback studies (CRED-nf). The Meta-analysis of clinical efficacy was carried out using Review Manager software, version 5.4.1 (RevMan 5; Cochrane Collaboration, Oxford, UK). Results: The qualitative analysis includes 44 studies, of which only 27 studies had some kind of control condition, five studies were double-blinded, and only three reported a blind follow-up throughout the intervention. The meta-analysis included a total sample of 203 individuals between stroke and fibromyalgia. Studies on multiple sclerosis, insomnia, quadriplegia, paraplegia, and mild cognitive impairment were excluded due to the absence of a control group or results based only on post-intervention scales. Statistical analysis indicated that stroke patients did not benefit from neurofeedback interventions when compared to other therapies (Std. mean. dif. 0.31, 95% CI 0.03-0.60, p = 0.03), and there was no significant heterogeneity among stroke studies, classified as moderate I2 = 46% p-value = 0.06. Patients diagnosed with fibromyalgia showed, by means of quantitative analysis, a better benefit for the group that used neurofeedback (Std. mean. dif. -0.73, 95% CI -1.22 to -0.24, p = 0.001). Thus, on performing the pooled analysis between conditions, no significant differences were observed between the neurofeedback intervention and standard therapy (0.05, CI 95%, -0.20 to -0.30, p = 0.69), with the presence of substantial heterogeneity I2 = 92.2%, p-value < 0.001. Conclusion: We conclude that although neurofeedback based on electrophysiological patterns of SMR contemplates the interest of numerous researchers and the existence of research that presents promising results, it is currently not possible to point out the clinical benefits of the technique as a form of clinical intervention. Therefore, it is necessary to develop more robust studies with a greater sample of a more rigorous methodology to understand the benefits that the technique can provide to the population.

Revealing the Structure Formation on Polyglycerol Citrate Polymers-An Environmentally Friendly Polyester as a Seed-Coating Material.

A detailed structural investigation of a promising bio-based polymer, polyglycerol citrate polyester, obtained by the bulk polycondensation of glycerol (Gly) against citric acid (Cit) under mild reaction was performed. The reaction in conditions with and without catalyst use (sulfuric acid, H2SO4) was investigated, showing evidence that it is possible to modify the polymer solubility according to the ratio and catalyst utilization. 13C and 1H NMR indicated that synthesis catalyzed with Cit excess leads to higher esterification degrees of citrate groups. In contrast, the Gly moieties are more prominent in catalyzed polymers regardless of the excess monomers. Overall, a successful conversion of Gly and Cit into polyesters was attained even without catalysis, enabling a simple route for the large-scale production of this green material to be used as a coating material. This polymer has been shown to be well-suited for coating seeds and might be a promising material for similar agricultural applications. Tests on soybean seed coating with a PGCit solution of 75% indicated that the seed quality and germination rate were not affected by the PGCit coating, concluding that this polymer is suitable for this application.

Effects of a self-care educational program via telerehabilitation on quality of life and caregiver burden in amyotrophic lateral sclerosis: a single-blinded randomized clinical trial protocol.

Introduction: The implementation of a telerehabilitation protocol for self-care in the routine of caregivers of individuals with amyotrophic lateral sclerosis (ALS) has been associated with reduced levels of stress and improved quality of life. Moreover, it may reduce the difficulty of traveling to perform physical or other self-care activities. Thus, this study designed a clinical trial protocol to investigate the effects of a self-care education program via telerehabilitation on the burden and quality of life of caregivers of individuals with ALS. Methods: This single-blinded randomized clinical trial will recruit 26 caregivers and randomly allocate them to the experimental (EG = 13) or control group (CG = 13). The EG will receive an informative booklet and participate in a 6-week synchronous telerehabilitation program with a neuropsychologist, nutritionist, and physiotherapist to discuss physical and mental health. The CG will receive an informative booklet on self-care and physical activity and weekly phone calls for 6 weeks to solve questions about the booklet. Outcomes will include the caregiver burden (Zarit scale), quality of life (World Health Organization Quality of Life BREF), pain (McGill Pain Questionnaire), stress (Perceived Stress Scale), and depression (Beck Depression Inventory), which will be evaluated at the baseline after the six-week program and 30 days after the program. Additionally, we will assess daily the nocturnal awakenings, sleep patterns, level of physical activity, and heart rate variability. Discussion: This study aimed to investigate the effectiveness of telerehabilitation for caregivers of individuals with ALS. If effective, this program could be disseminated among health professionals, increasing the possibility of remotely monitoring individuals with difficulty performing physical activities. Trial registration number: NCT05884034 (clinicaltrials.gov).

Oral amyloidosis: an update

Background: Amyloidosis is a disease characterized by the progressive deposition of abnormal proteins that can occur in any organ. In the oral cavity, the tongue is the most common affected site, usually causing macroglossia. Biopsy is essential for the diagnosis and the occurrence of its systemic form is mandatory to be investigated. This systematic review evaluated the existing information in the literature on Amyloidosis in the oral cavity to allow a more comprehensive and updated analysis of its clinicopathological characteristics, as well as to explore the main forms of treatment and prognostic factors. Material and methods: Electronic searches were undertaken in five databases supplemented by manual scrutiny. Results: A total of 111 studies were included with 158 individuals. Conclusions: The disease had a higher prevalence in women, the tongue was the most affected site, as well as the systemic form of the disease. The worst prognosis was for cases of systemic amyloidosis associated with multiple myeloma. (AU)

Telerehabilitation-based trunk exercise training for motor symptoms of individuals with Parkinson's disease: A randomized controlled clinical trial.

BACKGROUND: Poor gait and static balance performance may be associated with trunk muscles in individuals with Parkinson's disease. AIM: The study aims at evaluating the effects of a home-based trunk exercise program on gait and balance performance in Parkinson's disease. METHODS: A randomized controlled trial was conducted with 28 individuals with Parkinson's disease with Hoehn & Yahr stage II-IV. The control group (n = 14) performed upper and lower limb exercises, while the experimental group (n = 14) engaged in a trunk exercise program. Both groups performed home-based exercises three times daily for 3 weeks. At the end of interventions (post-training) and 4 weeks after post-training (follow-up), static balance (force plate) and gait (motion capture system) were evaluated. Mixed analysis of variance compared time × group interaction (α = 5%). RESULTS: No time × group interaction was observed in the center of pressure displacement, center of pressure mean velocity, and anteroposterior and mediolateral center of pressure range during bipedal support with eyes opened and closed; and gait speed, hip, knee, and ankle range of motion during gait analysis. No intragroup differences were found. CONCLUSION: Trunk strengthening exercises did not improve gait and balance compared with upper and lower limb exercises. The non-adherence rate (33%) to the remote intervention may have also hindered our results.

Access to rehabilitation after stroke in Brazil (AReA study): multicenter study protocol.

BACKGROUND: Most of the Brazilian population relies on public healthcare and stroke is a major cause of disability in this country of continental dimensions. There is limited information about access to rehabilitation after stroke in Brazil. OBJECTIVE: To provide comprehensive information about Access to Rehabilitation After discharge from public hospitals in Brazil (AReA study), up to 6 months after stroke. METHODS: The present study intends to collect information from 17 public health centers in 16 Brazilian cities in the 5 macroregions of the country. Each center will include 36 participants (n = 612). The inclusion criteria are: age ≥ 18 years old; ischemic or hemorrhagic stroke, from 6 months to 1 year prior to the interview; admission to a public hospital in the acute phase after stroke; any neurological impairment poststroke; patient or caregiver able to provide informed consent and answer the survey. Patients can only be recruited in public neurology or internal medicine outpatient clinics. Outcomes will be assessed by a standard questionnaire about rehabilitation referrals, the rehabilitation program (current status, duration in months, number of sessions per week) and instructions received. In addition, patients will be asked about preferences for locations of rehabilitation (hospitals, clinics, or at home). TRIAL STATUS: The study is ongoing. Recruitment started on January 31st, 2020 and is planned to continue until June 2022. CONCLUSION: The AReA study will fill a gap in knowledge about access to stroke rehabilitation in the public health system in different Brazilian regions.

ANTECEDENTES: Grande parte da população brasileira depende de saúde pública e o acidente vascular cerebral (AVC) é uma das principais causas de incapacidade neste país de dimensões continentais. As informações sobre o acesso à reabilitação após AVC em instalações públicas no Brasil são limitadas. OBJETIVO: Fornecer informações abrangentes sobre o Acesso à Reabilitação pós-AVC (estudo AReA) nos primeiros 6 meses após a alta hospitalar da rede pública. MéTODOS: Serão coletadas informações de 17 centros de saúde públicos em 16 cidades brasileiras das cinco macrorregiões do país. Cada centro incluirá 36 participantes (n = 612). Os critérios de inclusão são: idade ≥ 18 anos; AVC isquêmico ou hemorrágico, com tempo de lesão entre 6 meses e 1 ano; admissão em hospital público na fase aguda; qualquer comprometimento neurológico pós-AVC; paciente ou cuidador capaz de fornecer consentimento informado e responder à pesquisa. Os pacientes só podem ser recrutados em ambulatórios públicos de neurologia ou medicina interna. Os resultados serão avaliados por um questionário padrão sobre encaminhamentos de reabilitação, o programa de reabilitação (estado atual, duração em meses, número de sessões por semana) e instruções recebidas. Além disso, os pacientes serão questionados sobre as preferências de locais de reabilitação (hospitais, clínicas ou casa). STATUS DO ESTUDO: O estudo está em andamento. O recrutamento começou em 31 de janeiro de 2020 e está previsto para continuar até junho de 2022. CONCLUSãO: O estudo AReA preencherá uma lacuna no conhecimento sobre o acesso à reabilitação para AVC no sistema público de saúde em diferentes regiões brasileiras.

Physical therapy for the management of motor symptoms in amyotrophic lateral sclerosis: protocol for a systematic review.

INTRODUCTION: The prescription of an intervention plan can be challenging for the physical therapist, considering clinical phenotypes, individual prognosis and the rapid, progressive and deteriorating nature of amyotrophic lateral sclerosis (ALS). In this context, therapeutic exercises (eg, resistance and aerobic exercises) for patients with ALS remain controversial and may influence the treatment plan. Therefore, this review aims to critically assess whether physical therapy interventions are effective for improving functional capacity, quality of life and fatigue of individuals with ALS. METHODS AND ANALYSIS: Studies will be selected according to eligibility criteria, and language, geographical area or publication date will not be restricted. Four databases will be used: MEDLINE, EMBASE, Cochrane Library (CENTRAL) and Physiotherapy Evidence Database (PEDro). Searches will also be conducted on ClinicalTrials.gov and references from included studies. We plan to conduct the searches between October and December 2022. Two independent authors will examine titles and abstracts and exclude irrelevant studies and duplicates. We will assess the quality of studies and quality of evidence, and disagreements will be resolved with a third researcher. The findings will be presented in the text and tables; if possible, we will perform meta-analyses. ETHICS AND DISSEMINATION: No ethical approval is required because this study does not involve human beings. We will publish our findings in peer-reviewed journals. PROSPERO REGISTRATION NUMBER: CRD42021251350.

Miniaturized Carbon Fiber Paper Electrodes for In Situ High Resolution NMR Analyses.

Combining spectroscopic techniques with electrochemistry is a promising strategy, as it allows the detailed investigation of the species that are consumed and produced by the reaction in real time. However, as with any in situ coupling technique, the junction between NMR and electrochemistry presents some challenges, notably the distortion of NMR signals due to the placement of electrodes close to or within the detection region. In this work, miniaturized electrodes made of carbon fiber paper were developed and later modified with platinum. Platinum decoration by cathodic deposition was chosen, as platinum is a prominent element in electrocatalysis, able to catalyze a large variety of reactions. To evaluate the efficiency of this electrochemical system, the oxidation of ascorbic acid was used as a model reaction. It was observed that the electrodes caused substantial signal distortion when placed within the detection region (full width at half-maximum equal to 1.46 Hz), whereas no distortion was observed when the electrodes were placed 1 mm above the detection region (full width at half-maximum equal to 0.95 Hz). With this system, it was also possible to monitor the magnetoelectrolysis effect, caused by the interaction of the magnetic field with the flowing ions, leading to a doubling of the ascorbic acid oxidation rate, compared to the reaction performed without a magnetic field. In addition to its low cost and simplicity in preparation, the developed electrode system allows the electrode surface to be easily modified with other suitable catalysts.

Access to rehabilitation after stroke in Brazil (AReA study): multicenter study protocol / Acesso à reabilitação após o AVC no Brasil (estudo AReA): protocolo de estudo multicêntrico

Abstract Background Most of the Brazilian population relies on public healthcare and stroke is a major cause of disability in this country of continental dimensions. There is limited information about access to rehabilitation after stroke in Brazil. Objective To provide comprehensive information about Access to Rehabilitation After discharge from public hospitals in Brazil (AReA study), up to 6 months after stroke. Methods The present study intends to collect information from 17 public health centers in 16 Brazilian cities in the 5 macroregions of the country. Each center will include 36 participants (n = 612). The inclusion criteria are: age ≥ 18 years old; ischemic or hemorrhagic stroke, from 6 months to 1 year prior to the interview; admission to a public hospital in the acute phase after stroke; any neurological impairment poststroke; patient or caregiver able to provide informed consent and answer the survey. Patients can only be recruited in public neurology or internal medicine outpatient clinics. Outcomes will be assessed by a standard questionnaire about rehabilitation referrals, the rehabilitation program (current status, duration in months, number of sessions per week) and instructions received. In addition, patients will be asked about preferences for locations of rehabilitation (hospitals, clinics, or at home). Trial Status The study is ongoing. Recruitment started on January 31st, 2020 and is planned to continue until June 2022. Conclusion The AReA study will fill a gap in knowledge about access to stroke rehabilitation in the public health system in different Brazilian regions.

Resumo Antecedentes Grande parte da população brasileira depende de saúde pública e o acidente vascular cerebral (AVC) é uma das principais causas de incapacidade neste país de dimensões continentais. As informações sobre o acesso à reabilitação após AVC em instalações públicas no Brasil são limitadas. Objetivo Fornecer informações abrangentes sobre o Acesso à Reabilitação pós-AVC (estudo AReA) nos primeiros 6 meses após a alta hospitalar da rede pública. Métodos Serão coletadas informações de 17 centros de saúde públicos em 16 cidades brasileiras das cinco macrorregiões do país. Cada centro incluirá 36 participantes (n = 612). Os critérios de inclusão são: idade ≥ 18 anos; AVC isquêmico ou hemorrágico, com tempo de lesão entre 6 meses e 1 ano; admissão em hospital público na fase aguda; qualquer comprometimento neurológico pós-AVC; paciente ou cuidador capaz de fornecer consentimento informado e responder à pesquisa. Os pacientes só podem ser recrutados em ambulatórios públicos de neurologia ou medicina interna. Os resultados serão avaliados por um questionário padrão sobre encaminhamentos de reabilitação, o programa de reabilitação (estado atual, duração em meses, número de sessões por semana) e instruções recebidas. Além disso, os pacientes serão questionados sobre as preferências de locais de reabilitação (hospitais, clínicas ou casa). Status do estudo O estudo está em andamento. O recrutamento começou em 31 de janeiro de 2020 e está previsto para continuar até junho de 2022. Conclusão O estudo AReA preencherá uma lacuna no conhecimento sobre o acesso à reabilitação para AVC no sistema público de saúde em diferentes regiões brasileiras.

Impact of physiotherapy with telerehabilitation on caregivers of patients with neurological disorders: A systematic review protocol.

Introduction: Caregivers are essential during and after rehabilitation but exhibit intense physical and mental burdens due to responsibilities, resulting in stress, irritability, depression, anxiety, pain, and financial distress. Telerehabilitation offers several remote health services that improve time, engagement, and physical and mental health care access. Thus, we outlined a systematic review protocol to evaluate the impact of telerehabilitation on the burden, stress, pain, and quality of life of caregivers of patients with neurological disorders. Methods: Searches will be conducted in Ovid MEDLINE, Pubmed, Scopus, Web of Science, Embase, Cochrane Central Register of Controlled Trials, Physiotherapy Evidence Database, and PsycINFO databases. Clinical trials evaluating the burden, stress, pain, and quality of life of caregivers of patients with neurological disorders using telerehabilitation will be included without publication date or language restriction. Two reviewers will independently select studies from titles, abstracts, and reference lists. The quality of evidence and risk of bias will be assessed according to Cochrane recommendations. Results: This systematic review to be developed will evaluate the impact of telerehabilitation on the burden, stress, pain, and quality of life of caregivers of patients with neurological disorders. Discussion: Caregivers, especially of patients with neurological disorders, need more attention since the overload, stress, duties with other personal responsibilities, and low remuneration may impact the quality of life. Therefore, they need intervention, especially physical therapy via telehealth, which values the time of caregivers and may change their perception of health and quality of life. PROSPERO registration number: CRD42022278523.

Action observation and motor imagery have no effect on balance and freezing of gait in Parkinson's disease: a randomized controlled trial.

BACKGROUND: Combining action observation (AO) and motor imagery (MI) training may induce greater brain activity in areas usually involved in Parkinson's disease (PD) and lead to greater behavioral and neurophysiological effects than when used separately. AIM: To determine the effects of combining AO, MI, and gait training on balance and freezing of gait in individuals with PD. DESIGN: This is a single-blinded, randomized controlled clinical trial. SETTING: Laboratory of Intervention and Analysis of Movement (LIAM) from the Department of Physical Therapy of a Brazilian University. POPULATION: Study sample consisted of individuals diagnosed with idiopathic PD by a neurologist specialized in movement disorders. METHODS: 39 individuals with PD were divided into experimental (EG=21) and control groups (CG=18). EG performed 12 sessions of AO, MI, and gait training, whereas CG watched PD-related educational videos and performed 12 sessions of gait training. Balance (measured using the Mini Balance Evaluation Systems Test [MiniBESTest]) and freezing of gait (measured using the Freezing of Gait Questionnaire) were reassessed one day after the end of the intervention. RESULTS: We did not observe significant intra- and intergroup differences in freezing of gait. For the EG, we observed a significant intragroup difference in the total score of MiniBESTest (F=5.2; P=0.02), and sensory orientation (F=4.5; P=0.04) and dynamic gait (F=3.6; P=0.03) domains. MiniBESTest domains were not different between groups. CONCLUSIONS: Combining AO, MI, and gait training was not more effective than isolated gait training for balance and freezing of gait in individuals with PD. CLINICAL REHABILITATION IMPACT: MI training can moderate AO effects and enhance motor learning when both therapies are combined. Therefore, this approach may still have the potential to be included in the treatment of PD. New studies should investigate whether the factors that influence these results are related to the protocol's sensitivity in changing the evaluated parameters or to the time and intensity of AO and MI training.