Publications by authors named "James Elliott"

Space agencies plan crewed missions to the Moon and Mars. However, microgravity-induced lumbopelvic deconditioning, characterized by an increased fat fraction (FF) due to reduced physical activity, poses a significant challenge to spine health. This study investigates the spatial distribution of FF in the lumbopelvic muscles to identify the most affected regions by deconditioning, utilizing a computer-vision model and a tile-based approach to assess FF changes.

View Article and Find Full Text PDF
Article Synopsis
  • - In nonagenarians with complete heart block, dual-chamber (DDD) pacing showed better physiological outcomes compared to single-chamber (VVI) pacing, although the effect on overall mortality is debated.
  • - Among 168 patients studied, those with VVI pacing were older, frailer, and had higher rates of dementia compared to DDD recipients, but both groups had similar age and heart function at baseline.
  • - After adjusting for factors like age and frailty, VVI pacing was linked to significantly higher risks of all-cause mortality and death from congestive cardiac failure, suggesting better long-term outcomes for DDD pacing in this population.
View Article and Find Full Text PDF

Disorders affecting the neurological and musculoskeletal systems represent international health burdens. A significant impediment to progress with interventional trials is the absence of responsive, objective, and valid outcome measures sensitive to early disease or disorder change. A key finding in individuals with spinal disorders is compositional changes to the paraspinal muscle and soft tissue (e.

View Article and Find Full Text PDF

Background: Hip-related pain (HRP) affects young to middle-aged active adults and impacts physical activity, finances and quality of life. HRP includes conditions like femoroacetabular impingement syndrome and labral tears. Lateral hip muscle dysfunction and atrophy in HRP are more pronounced in advanced hip pathology, with limited evidence in younger populations.

View Article and Find Full Text PDF

Sarcopenia, generally defined by the loss of skeletal mass and function, may disproportionately affect elderly individuals and heavily influence spinal disease. Muscle atrophy is associated with myriad clinical problems, including thoracic kyphosis, increased sagittal vertical axis (SVA), spinal implant failures, and postoperative complications. As such, the aim of this narrative review is to synthesize pertinent literature detailing the intersection between sarcopenia and the impact of sarcopenia on the management of spine disease.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates age-related changes in thigh muscle composition, focusing on the loss of muscle mass and increase in intramuscular fat in adults aged 45-84 using data from the UK Biobank with over 50,000 participants.
  • Findings show a consistent decline in fat-free muscle volume and a rise in intramuscular fat across different age groups, with specific metrics provided for both men and women.
  • Results are significant for establishing normative values that can inform health and lifestyle recommendations related to physical activity and conditions like leg pain and bone density.
View Article and Find Full Text PDF

It is unclear why neck pain persists or resolves, making assessment and management decisions challenging. Muscle composition, particularly muscle fat infiltrate (MFI), is related to neck pain, but it is unknown whether MFI changes with recovery following targeted interventions. We compared muscle composition quantified from fat-water magnetic resonance images from the C3 to T1 vertebrae in individuals with and without chronic idiopathic neck pain at two times 6 months apart.

View Article and Find Full Text PDF

The magnitude of the frictional forces during the ejection of porous pharmaceutical tablets plays an important role in determining the occurrence of tabletting defects. Here, we perform a systematic comparison between the maximum ejection force, static friction coefficient, and kinetic friction coefficient. All of these metrics have different physical meanings, corresponding to different stages of ejection.

View Article and Find Full Text PDF

Introduction: Pain in Parkinson's disease (PD) is common but poorly understood, with most research to date taking a mechanistic approach. This mixed methods study takes a broader biopsychosocial approach to assess and describe contributors of pain and explore pain management and the relationship between pain and physical activity in people with PD (PwPD) and chronic pain.

Methods: A structured survey evaluated respondents' contributors of pain using standardized, self-report assessments of the following: pain, peripheral neuropathy, central nociplastic change, emotional dysregulation or pathology, and maladaptive cognitions.

View Article and Find Full Text PDF

Creativity has previously been linked with various attentional phenomena, including unfocused or broad attention. Although this has typically been interpreted through an executive functioning framework, such phenomena may also arise from atypical incentive salience processing. Across two studies, we examine this hypothesis both neurally and psychologically.

View Article and Find Full Text PDF

Clinical management of whiplash-associated disorders is challenging and often unsuccessful, with over a third of whiplash injuries progressing to chronic neck pain. Previous imaging studies have identified muscle fat infiltration, indicative of muscle weakness, in the deep cervical extensor muscles (multifidus and semispinalis cervicis). Yet, kinematic and muscle redundancy prevent the direct assessment of individual neck muscle strength, making it difficult to determine the role of these muscles in motor dysfunction.

View Article and Find Full Text PDF

Background: This scoping review aimed to identify the barriers, facilitators and benefits of returning to work following burn injury, outcome measures used, management strategies, and models of care.

Objective: To provide a comprehensive overview about working-aged adults returning to their preinjury employment after burn injury.

Methods: We followed a pre-determined scoping review protocol to search MEDLINE, CINAHL, Embase, PsycINFO, PubMed, Scopus, CCRCT and CDSR databases between 2000 to December 2023.

View Article and Find Full Text PDF

Aims/hypothesis: Beta cells within the pancreatic islet represent a heterogenous population wherein individual sub-groups of cells make distinct contributions to the overall control of insulin secretion. These include a subpopulation of highly connected 'hub' cells, important for the propagation of intercellular Ca waves. Functional subpopulations have also been demonstrated in human beta cells, with an altered subtype distribution apparent in type 2 diabetes.

View Article and Find Full Text PDF

Background Context: The role of lumbar paraspinal muscle health in back pain (BP) is not straightforward. Challenges in this field have included the lack of tools and large, heterogenous datasets to interrogate the association between muscle health and BP. Computer-vision models have been transformative in this space, enabling the automated quantification of muscle health and the processing of large datasets.

View Article and Find Full Text PDF

Background: Hip fracture has a devastating impact on individuals and is an increasing burden for health systems and society. Compared to usual care, increased physiotherapy provision has demonstrated efficacy in improving patient and health service outcomes in this population. However, physiotherapy workforce challenges prevent sustained implementation.

View Article and Find Full Text PDF

Objective: To describe a virtual, competency-based skin and wound care (SWC) skills training model. The ECHO (Extension for Community Healthcare Outcomes) Ontario SWC pivoted from an in-person boot camp to a virtual format because of the COVID-19 pandemic.

Methods: An outcome-based program evaluation was conducted.

View Article and Find Full Text PDF

Objectives: To investigate associations between lateral hip muscle size/intramuscular fat infiltration (MFI) and hip strength in active young adults with longstanding hip/groin pain.

Design: Cross-sectional study.

Setting: University/Clinical.

View Article and Find Full Text PDF
Article Synopsis
  • The study explores the heterogeneous nature of beta cells in the pancreatic islet, highlighting how different subpopulations contribute uniquely to insulin secretion, especially in the context of type 2 diabetes.
  • It examines the role of the imprinted gene neuronatin (NNAT) in insulin synthesis and its expression patterns in both mice and human beta cells, suggesting that epigenetic changes may influence beta cell function.
  • Utilizing advanced techniques like single-cell RNA sequencing and proteomics, the research indicates that distinct beta cell populations emerge during embryonic development, regulated by DNA methylation processes.
View Article and Find Full Text PDF

Background: Remote monitoring (RM) of implantable cardiac devices provides substantial and complex information, presenting new challenges such as detection of a patient's death.

Objective: This study aims to describe RM transmissions indicating death and propose a management strategy for services.

Methods: The study included consecutive ambulatory outpatients whose deaths were detected via RM.

View Article and Find Full Text PDF

Reconceptualising acute Musculoskeletal (MSK) injuries with both stress- and tissue- based factors is required to consider prior influences of mental health disorders on acute persistent MSK pain presentations. This report describes repeated emergency presentations of an individual with acute persistent MSK pain in their twenties living with mental health. Their mental health diagnoses included depression, mood disorders, and anorexia nervosa.

View Article and Find Full Text PDF