Hispanic Perspectives on Parkinson's Disease Care and Research Participation

Cepstral Changes Following Intensive Voice-Focused Treatment in Parkinson's Disease

OBJECTIVES

The purpose of this study was to analyze cepstral changes following intensive voice-focused treatment in Spanish speakers with Parkinson's disease (PD). A secondary aim of the study was to explore the relationship between cepstral values across time and perceptual data across speech subsystems.

STUDY DESIGN/METHODS

This study followed a one-group pretest-post test design. The smoothed cepstral peak prominence (CPPS) of conversational sentences was analyzed pretreatment and post treatment and at a 1-month follow-up session in 15 Spanish-speaking individuals with PD. A secondary data analysis was then conducted to examine CPPS values relative to perceptual changes in voice quality (VQ), ease of understanding, articulatory precision, resonance (RES), and prosody across time points.

RESULTS

A significant difference in CPPS was established between speakers with mild and moderate dysarthria at pre treatment only. No significant differences were observed between groups at post treatment or follow-up. Within groups, both sets of speakers evidenced significant increases in CPPS post treatment as well as from pre treatment to follow-up. A positive and statistically significant correlation was observed between CPPS scores and the perceptual values for VQ and RES, irrespective of the stage of treatment.

CONCLUSIONS

Intensive voice-focused treatment may lead to improved VQ, as measured by the CPPS, in ecologically valid contexts, such as those involving conversations, with gains maintained in the short-term. Additionally, this type of treatment may result in a positive distribution of effects involving not just perceived VQ but also improved perception of RES.

Comparing Physical Activity and Exercise Experiences, Values, and Beliefs of Latino, Latina, and/or Latine People and Non-Latino, Non-Latina, and/or Non-Latine People With Parkinson Disease: A Qualitative Study

OBJECTIVE

The objective of this study was to examine and compare the beliefs, values, experiences, and barriers to and facilitators of exercise in Latino/a/e (Latino, Latina, and/or Latine) people and non-Latino/a/e (non-Latino, non-Latina, and/or non-Latine) people with Parkinson disease (PD).

METHODS

This study involved a qualitative research design with data collection via focus groups of Latino/a/e and non-Latino/a/e people with PD. A semistructured interview protocol was used, and a theoretical (social ecological model) thematic analysis was used for data analysis.

RESULTS

Twenty-five individuals (15 non-Latino/a/e and 10 Latino/a/e) participated across 5 focus groups. While there were several common themes among both groups, 7 themes related to exercise in the management of PD were unique to Latino/a/e participants: generalized versus specific knowledge of exercise components; family can have both facilitating and impeding roles; finances influence access to exercise and physical therapy; prior emotional experiences related to exercise and PD affect the future use of exercise; group exercise can have both facilitating and impeding roles; availability and access to a variety of modes and stratification of exercise classes for people with PD facilitate exercise; and cultural beliefs and expectations can impede the use of exercise at the population level.

CONCLUSION

Latino/a/e people with PD have overlapping and unique themes related to the use of exercise. Distinctive factors must be addressed in physical activity interventions and during physical therapists' care of people with PD to maximize the use of exercise and ultimately improve health equity in this overburdened and underserved population.

IMPACT

Physical therapists should provide information and education to their Latino/a/e patients with PD and family members on the frequency, intensity, type, and time of exercise and how to safely participate in physical activity in the home and community to best manage PD. Physical therapists and exercise professionals should work at the environmental level to increase access to affordable, culturally tailored, PD-specific exercise services and enhance community knowledge of PD.

¿Notas La Diferencia? [Do You Hear the Difference?]: Perceptual Consequences of Intensive Voice Treatment in Spanish Speakers With Parkinson's Disease

PURPOSE

The primary objective of this study was to explore the effects of intensive voice-focused treatment on speech parameters in Spanish speakers with dysarthria associated with Parkinson's disease (PD) as perceived by naïve listeners.

METHOD

Fifteen Spanish speakers with dysarthria associated with PD received the Lee Silverman Voice Treatment (LSVT LOUD) for a month. Voice and speech recordings were conducted pretreatment, posttreatment, and at a 1-month follow-up. Thirty naïve adult listeners rated the perceptual dimensions of ease of understanding (EoU), resonance, articulatory precision, prosody, and voice quality from sentences extracted from an emotional monologue on a visual analogue scale.

RESULTS

EoU, resonance, articulatory precision, and voice quality significantly improved pre- to posttreatment, but gains were not maintained at follow-up. Speech severity was a significant source of variance in mean listener response for all perceptual dimensions, although the interaction between speech severity and time was only significant for resonance and voice quality.

CONCLUSIONS

LSVT LOUD may be beneficial to improve perceptual speech domains affected by PD in Spanish speakers with dysarthria. Its impact on the different speech subsystems may reflect a universal distribution of effects when directly targeting the glottal source. Language-specific contributions of each perceptual domain to speech intelligibility should be explored in further research to determine linguistically sensitive treatment targets.

Experiences from the implementation of physical therapy via telehealth for individuals with Parkinson disease during the COVID-19 pandemic

PURPOSE

To (1) determine the characteristics and participation rate of adults with Parkinson disease (PD) in physical therapy (PT) delivered via telehealth, (2) identify the outcome measures and interventions implemented, (3) determine the safety of and (4) patient and therapist satisfaction with PT via telehealth in a clinic specializing in the care of people with PD during the coronavirus pandemic.

MATERIALS & METHODS

A retrospective analysis of PT services via telehealth was conducted. Participating patients completed a satisfaction survey. Physical therapists (PTs) who delivered this care were interviewed. Three coders conducted thematic analysis of interviews. Descriptive statistics described the participation rate, demographics, outcome measures, interventions, and safety.

RESULTS

There was a 71.4% participation rate. Participants (n = 55) were white (96%), non-Hispanic (100%), older adult (mean = 69.5 years (8.3)) males (65.5%). Non-participants (n = 22) had similar demographics. Therapists selected patient-reported measures more often than performance-based measures. Therapeutic exercise was the most common intervention. All patients (80% response rate) reported satisfaction with their experience. PTs reported the home enhanced specificity of training but impeded evaluation. Therapists endorsed a hybrid model for future practice.

CONCLUSIONS

Patients reported satisfaction with PT via telehealth during the pandemic. A hybrid model may support optimal delivery of PT.IMPLICATIONS FOR REHABILITATIONPhysical therapy via telehealth for patients with Parkinson disease was acceptable to patients and physical therapists in our study.Physical therapy via telehealth was safe for people with Parkinson disease in our study, although availability and benefits may not be reaching all populations equitably.Both physical therapists and patients endorse a hybrid model of care (a combination of in-person and remote assessment and treatment) to profit from the strengths of in-person and virtual formats while minimizing barriers to access.

Ethnoracial differences for caregiving burden in Parkinson's disease

INTRODUCTION

Caregivers play an important role in Parkinson's disease (PD) treatment, especially as the disease progresses. As the symptom profile and needs of people with PD (PwP) differ across ethnoracial groups, whether caregiving needs also differ for different ethnoracial groups should be investigated.

METHODS

Data were obtained from the Parkinson's Foundation funded Parkinson's Outcomes Project for PwP identifying as Hispanic (n = 495), non-Hispanic Asian (n = 170), non-Hispanic Black (n = 162), or non-Hispanic White (n = 7687). Cross-sectional and longitudinal total Multidimensional Caregiver Strain Index (MCSI) and domain-specific scores for caregiving burden were compared across the ethnoracial groups. Effect of demographics and clinical variables, interaction of these variables with ethnoracial groups for caregiver burden was assessed.

RESULTS

Care partners of PwP identifying as non-Hispanic Asian experienced the most burden. PwP identifying as non-Hispanic White were oldest, yet their care partners experienced the least burden. Care partners of PwP identifying as non-Hispanic Asian experienced more burden in physical and social domains, care partners of PwP identifying as Hispanic experienced more burden in financial and elder demanding/manipulative domains. Over time, burden increased similarly across the ethnoracial groups. Effect of frequency of falls, hospital admission, neuropsychiatric disorder and social support on burden over time differed across the groups.

CONCLUSION

PwP from different ethnoracial groups can experience different levels of caregiving burden. Predictors for caregiving burden, such as social support and falls can have different impacts based on ethnicity and race. Caregiver needs should also be assessed and culturally competent support should be provided to benefit all affected by PD.

Enrollment of Participants From Marginalized Racial and Ethnic Groups: A Comparative Assessment of the STEADY-PD III and SURE-PD3 Trials

Background and Objectives

Representation of persons from marginalized racial and ethnic groups in Parkinson disease (PD) trials has been low, limiting the generalizability of therapeutic options for individuals with PD. Two large phase 3 randomized clinical trials sponsored by the National Institute of Neurological Disorders and Stroke (NINDS), STEADY-PD III and SURE-PD3, screened participants from overlapping Parkinson Study Group clinical sites under similar eligibility criteria but differed in participation by underrepresented minorities. The goal of this research is to compare recruitment strategies of PD participants belonging to marginalized racial and ethnic groups.

Methods

A total of 998 participants with identified race and ethnicity consented to STEADY-PD III and SURE-PD3 from 86 clinical sites. Demographics, clinical trial characteristics, and recruitment strategies were compared. NINDS imposed a minority recruitment mandate on STEADY-PD III but not SURE-PD3.

Results

Ten percent of participants who consented to STEADY-PD III self-identified as belonging to marginalized racial and ethnic groups compared to 6.5% in SURE-PD3 (difference = 3.9%, 95% confidence interval [CI] 0.4%-7.5%, p value = 0.034). This difference persisted after screening (10.1% of patients in STEADY-PD III vs 5.4% in SURE-PD 3, difference = 4.7%, 95% CI 0.6%-8.8%, p value = 0.038).

Discussion

Although both trials targeted similar participants, STEADY-PD III was able to consent and recruit a higher percentage of patients from racial and ethnic marginalized groups. Possible reasons include differential incentives for achieving minority recruitment goals.

Trial Registration Information

This study used data from The Safety, Tolerability, and Efficacy Assessment of Isradipine for Parkinson Disease (STEADY-PD III; NCT02168842) and the Study of Urate Elevation in Parkinson's Disease (SURE-PD3; NCT02642393).

Race and Ethnicity in Lewy Body Dementia: A Narrative Review

Lewy body dementia is the third most common and costliest type of dementia. It is an umbrella term for dementia with Lewy bodies and Parkinson's disease dementia, both of which place a substantial burden on the person and society. Recent findings outline ethnoracial differences in dementia risk. Delayed and misdiagnosis across ethnoracial groups contribute to higher levels of burden. In this context, we aimed to summarize current knowledge, gaps, and unmet needs relating to race and ethnicity in Lewy body dementia. In this narrative review, we provide an overview of studies on Lewy body dementia focusing on differences across ethnoracial groups and outline several recommendations for future studies. The majority of the findings comparing different ethnoracial groups were from North American sites. There were no differences in clinical prevalence and progression across ethnoracial groups. Compared to people identifying as non-Hispanic White, co-pathologies were more common and clinical diagnostic accuracy was lower for people identifying as Black. Co-morbidities (e.g., diabetes, hypertension) were more common and medication use rates (e.g., antidepressants, antiparkinsonian agents) were lower for people identifying as Black or Hispanic compared to people identifying as White. More than 90% of clinical trial participants identified as non-Hispanic White. Despite increasing efforts to overcome disparities in Alzheimer's disease and related dementias, inclusion of individuals from minoritized communities in Lewy body dementia studies continues to be limited and the findings are inconclusive. Representation of diverse populations is crucial to improve the diagnostic and therapeutic efforts in Lewy body dementia.

Research Priorities of Individuals and Caregivers With Lewy Body Dementia: A Web-based Survey

INTRODUCTION

Lewy body dementia (LBD) is common, yet under-recognized and under-researched. To plan studies with the highest impact, engagement of the community personally affected by these conditions is essential.

METHODS

A web-based survey of people living with LBD and current and former caregivers of people with LBD queried research priorities through forced ranking and exploration of burden of LBD symptoms. Specific caregiving needs in LBD and perceptions of research participation were also investigated.

RESULTS

Between April 7, 2021 and July 1, 2021, 984 responses were recorded. Top research priorities included disease-modifying therapies and improved disease detection and staging. People with LBD were interested in pathophysiology and more bothered by motor symptoms; caregivers were interested in risk factors and symptomatic therapies and more bothered by neuropsychiatric symptoms. Few available LBD treatments and resources were rated as helpful, and many valuable services were never received. Previous participation in LBD research was infrequent, but interest was high.

DISCUSSION

People with LBD and caregivers highlighted the need for research across all aspects of LBD, from pathophysiology and disease modification to prognosis, education, symptomatic treatments, and caregiver support. Funders should increase support for all aspects of LBD research to target the many needs identified by individuals and families living with LBD.

Moving the Dial Toward Equity in Parkinson's Disease Clinical Research: a Review of Current Literature and Future Directions in Diversifying PD Clinical Trial Participation

PURPOSE OF REVIEW

Parkinson's disease (PD), the second most common neurodegenerative disease, has a worldwide prevalence projected at 12 million by 2040. While PD has been extensively researched, our understanding of the disease is based on research studies that include mostly participants of European descent. The lack of diversity in clinical trial enrollment has limited the generalizability of scientific discoveries in the field. Here, we discuss contributors to racial and ethnic disparities in PD clinical research enrollment, summarize recently proposed and tested interventions, and propose next steps to increase equity and representation in PD research.

RECENT FINDINGS

Enrollment in PD clinical research is vulnerable to upstream disparities and inequities from PD awareness to access to specialized PD centers. While additional research is still needed, recent studies have identified some potential strategies for increasing underrepresented minority (URM) recruitment including increasing the availability of linguistically and culturally diverse research materials and team members, partnering with community organizations, and forming relationships with URM-serving community physicians. To move the dial toward equity in PD research, it will be necessary to implement known successful strategies and further investigate additional contributors to the underrepresentation of URMs in PD clinical research while developing and testing interventions to address these factors.

Moving Forward from the COVID-19 Pandemic: Needed Changes in Movement Disorders Care and Research

Purpose of Review

The COVID-19 pandemic has dramatically affected the health and well-being of individuals with movement disorders. This manuscript reviews these effects, discusses pandemic-related changes in clinical care and research, and suggests improvements to care and research models.

Recent Findings

During the on-going COVID-19 pandemic, individuals with movement disorders have experienced worsening of symptoms, likely due to decreased access to care, loss of social connection, and decreased physical activity. Through telemedicine, care has moved out of the clinic and into the home. Clinical research has also been significantly disrupted, and there has been a shift to decentralized approaches. The pandemic has highlighted disparities in access to care and representation in research.

Summary

We must now translate these experiences into better care and research models with a focus on equitable integration of telemedicine, better support of patients and caregivers, the development of meaningful digital endpoints, and optimization of decentralized research designs.