Comparison of externally and internally guided dance movement to address mobility, cognition, and psychosocial function in people with Parkinson's disease and freezing of gait: a case series.

Objective: The aim of this study is to explore the impact of internally guided (IG) versus externally guided (EG) adapted tango (AT) dance training (i.e., dancing the IG "Leader" role or the EG "Follower" role), on motor and non-motor functions in individuals with Parkinson's disease and freezing of gait (PD-FOG). The "Leader" role, a proxy for IG movements, conveys direction, timing, and amplitude of steps with tactile cues. The "Follower" role, a proxy for EG movements, detects and responds to the leader's tactile cues. Case description: Six participants were randomly assigned to the IG ("Leader") or EG ("Follower") roles for 20, 90-min AT lessons over 12 weeks. Participants were assessed for PD-specific and non-PD-specific functions before and twice after the end of the 12-week intervention, at 1-week and 1-month post-intervention. Results: EG participants improved and/or maintained performance on more outcomes across all domains than IG participants. Five participants improved in PD motor symptoms, dynamic gait, global cognitive function, and the FOG Questionnaire immediately or 1 month after intervention. All participants expressed positive attitudes toward the intervention, including improvements in walking, balance, and endurance. Conclusion: AT training in the follower role may benefit individuals with PD-FOG to a greater extent compared to the leader role. Impact: This case series study could inform additional research with the goal of enhancing physical therapy or music-based therapy approaches for addressing PD-FOG.

Qualitative Analysis of Attitudes, Knowledge, and Interest in Research of People with Parkinson's Disease and Their Care Partners Receiving Accessible Research Education.

Background: People with Parkinson's disease (PWP) and their care partners (CP) are underrepresented in research. Methods: As an eight-week research advocacy training program, TeleDREAMS was designed to increase understanding of, and participation in, clinical research by older adults through topics on the research process. Qualitative analysis was conducted to explore themes from 365 thirty-minute semistructured phone interviews with 32 PWP and 17 CP TeleDREAMS participants. Interviews gauged progress, motivation, and information retention after each weekly module. Results: Eight salient themes were identified from the interviews, including Understanding the Importance of Advocacy and Becoming Cognizant of Past Advocacy Experiences. Conclusions: While some findings aligned with weekly module topics, others, such as stated learning preferences and knowledge acquisition of older adults in an educational program, were unexpected. TeleDREAMS may increase interest in community engagement, research participation, and advocacy roles in marginalized and underrepresented participants.

Remote and in-person research education for people with Parkinson's disease and their care partners.

OBJECTIVE: TeleDREAMS, a distance learning version of the Developing a Research Participation Enhancement and Advocacy Training Program for Diverse Seniors (DREAMS) program, provides remote clinical research process and advocacy education to older adults with Parkinson's disease (PD) and their care partners. METHOD: Participants engaged in remote learning, reading eight weekly clinical research process and advocacy education modules. They also had weekly half hour phone discussions with staff about each module. Participants (PD: n = 28, care partner: n = 15) were tested on health literacy, quality of life, depression, research involvement, and advocacy measures. RESULTS: People with PD improved on health literacy postintervention. PD participants who participated with care partners improved more on health literacy than those without care partners. PD participants' attrition rates were lower for PD participants in TeleDREAMS than those of the similar, in-person program DREAMS program studied before TeleDREAMS. Most participants reported research involvement and patient advocacy for older adults with PD 6 to 9 months postprogram. CONCLUSIONS: TeleDREAMS may improve health literacy in participants with Parkinson's and their care partners. If increased advocacy and health and research literacy translates to increased research involvement, then TeleDREAMS could be an important strategy for researchers interested in increasing participation. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Pore-size dependence and slow relaxation of hydrogel friction on smooth surfaces.

Hydrogels consist of a cross-linked polymer matrix imbibed with a solvent such as water at volume fractions that can exceed 90%. They are important in many scientific and engineering applications due to their tunable physiochemical properties, biocompatibility, and ultralow friction. Their multiphase structure leads to a complex interfacial rheology, yet a detailed, microscopic understanding of hydrogel friction is still emerging. Using a custom-built tribometer, here we identify three distinct regimes of frictional behavior for polyacrylic acid (PAA), polyacrylamide (PAAm), and agarose hydrogel spheres on smooth surfaces. We find that at low velocities, friction is controlled by hydrodynamic flow through the porous hydrogel network and is inversely proportional to the characteristic pore size. At high velocities, a mesoscopic, lubricating liquid film forms between the gel and surface that obeys elastohydrodynamic theory. Between these regimes, the frictional force decreases by an order of magnitude and displays slow relaxation over several minutes. Our results can be interpreted as an interfacial shear thinning of the polymers with an increasing relaxation time due to the confinement of entanglements. This transition can be tuned by varying the solvent salt concentration, solvent viscosity, and sliding geometry at the interface.