Mild cognitive impairment in the elderly Relationship between communication and functional capacity

Age-related modifications of muscle synergies during daily-living tasks: A scoping review

BACKGROUND

Aging is associated with changes in neuromuscular control that can lead to difficulties in performing daily living tasks. Muscle synergy analysis allows the assessment of neuromuscular control strategies and functional deficits. However, the age-related changes of muscle synergies during functional tasks are scattered throughout the literature. This review aimed to synthesize the existing literature on muscle synergies in elderly people during daily-living tasks and examine how they differ from those exhibited by young adults.

METHODS

The Medline, CINAHL and Web of Science databases were searched. Studies were included if they focused on muscle synergies in elderly people during walking, sit-to-stand or stair ascent, and if muscle synergies were obtained by a matrix factorization algorithm.

FINDINGS

Seventeen studies were included after the screening process. The muscle synergies of 295 elderly people and 182 young adults were reported, including 5 to 16 muscles per leg, or leg and trunk. Results suggest that: 1) elderly people and young adults retain similar muscle synergies' number, 2) elderly people have higher muscles weighting during walking, and 3) an increased inter and intra-subject temporal activation variability during specific tasks (i.e., walking and stair ascent, respectively) was reported in elderly people compared to young adults.

INTERPRETATION

This review gives a comprehensive understanding of age-related changes in neuromuscular control during daily living tasks. Our findings suggested that although the number of synergies remains similar, metrics such as spatial and temporal structures of synergies are more suitable to identify neuromuscular control deficits between young adults and elderly people.

Factors influencing older adults' satisfaction with caregivers' communication

Effective communication skills are crucial for caregivers to provide quality care and meet the unique needs of patients of all ages. However, older patients have specific communication requirements, and their satisfaction depends on several factors.

Objective

This study aimed to evaluate the level of satisfaction among older adults in Marrakech, Morocco, regarding the communication skills of their caregivers, and to identify the factors influencing this satisfaction.

Methods

This is a cross-sectional study conducted between March and July 2022 among 204 people aged 60 years and older who presented to the Mouhamed VI University Hospital of Marrakech, Morocco, for various care services. The older adults' satisfaction with caregivers' communication was assessed by the American Board of Internal Medicine (ABIM) patient satisfaction questionnaire. Sociodemographic and clinical characteristics of the participants were collected through interview and consultation of medical records. Multiple linear regression was used to determine potential factors influencing the total satisfaction score.

Results

The total satisfaction score of older adults with caregiver' communication was 2.55±0.95 and the mean scores of the lowest subscales were answering questions, greeting and listening. Analysis revealed that having visual disorders (B=-0.276±0.12; p=0.029) and receiving affective touch from caregivers (B=0.745±0.12; p=0.001) were the main factors associated with older adults' satisfaction with caregiver' communication.

Conclusion

Older people are not sufficiently satisfied with caregivers' communication skills, especially those with vision problems and those who have not received affective touch from caregivers. Caregivers need to be aware of the specific needs of older patients and use appropriate communication techniques.

Cognitive and Neural Mechanisms of Social Communication Dysfunction in Primary Progressive Aphasia

Mounting evidence suggests that, in parallel with well-defined changes in language, primary progressive aphasia (PPA) syndromes display co-occurring social cognitive impairments. Here, we explored multidimensional profiles of carer-rated social communication using the La Trobe Communication Questionnaire (LCQ) in 11 semantic dementia (SD), 12 logopenic progressive aphasia (LPA) and 9 progressive non-fluent aphasia (PNFA) cases and contrasted their performance with 19 Alzheimer’s disease (AD) cases, 26 behavioural variant frontotemporal dementia (bvFTD) cases and 31 healthy older controls. Relative to the controls, the majority of patient groups displayed significant overall social communication difficulties, with common and unique profiles of impairment evident on the LCQ subscales. Correlation analyses revealed a differential impact of social communication disturbances on functional outcomes in patient and carer well-being, most pronounced for SD and bvFTD. Finally, voxel-based morphometry analyses based on a structural brain MRI pointed to the degradation of a distributed brain network in mediating social communication dysfunction in dementia. Our findings suggest that social communication difficulties are an important feature of PPA, with significant implications for patient function and carer well-being. The origins of these changes are likely to be multifactorial, reflecting the breakdown of fronto-thalamic brain circuits specialised in the integration of complex information.