Chemerin mediates exercise-induced improvements of bone microstructure and bone mass in diabetes or high fat diet mice.

To clarify the roles and mechanisms of adipokine chemerin in exercise-induced bone improvements in type 2 diabetes mellitus (DM) mice and mice fed on high fat diet (HFD). DM mice were established by HFD+streptozotocin injection, exogenous chemerin was supplemented prior to running, and found that exogenous chemerin reversed 6-week exercise-induced improvements in cancellous bone parameters in DM mice. While adipose-specific chemerin knockout improved microstructure and mass of cancellous bone in HFD mice and further increased exercise-induced bone improvements, accompanied with promoted osteogenesis and inhibited osteoclasis represented as the changes of RANKL, M-CSF, Runx2, Osterix, OPG, ALP and CTSK.

Phosphodiesterase inhibition restoreshypoxia-induced cerebrovascular dysfunction subsequent to improved systemic redox homeostasis: A randomized, double-blind, placebo-controlled crossover study.

To what extent sildenafil, a selective inhibitor of the type-5 phosphodiesterase modulates systemic redox status and cerebrovascular function during acute exposure to hypoxia remains unknown. To address this, 12 healthy males (aged 24 ± 3 y) participated in a randomized, placebo-controlled crossover study involving exposure to both normoxia and acute (60 min) hypoxia (Fi = 0.14), followed by oral administration of 50 mg sildenafil and placebo (double-blinded).

Exploring the Influence of Interorganization Networks on the Dissemination of National Health Behavior Guidelines.

Background: Interorganization partnerships are important for the development and knowledge mobilization of national health behavior guidelines. However, little is known about how to improve the dissemination of guidelines across professional networks. Social network analysis may offer unique insight into the social structure of interorganization networks and provide guidance for how network features may be harnessed for effective dissemination.

Extracellular ATP regulates phagocytic activity, mitochondrial respiration, and cytokine secretion of human astrocytic cells.

The two main glial cell types of the central nervous system (CNS), astrocytes and microglia, are responsible for neuroimmune homeostasis. Recent evidence indicates astrocytes can participate in removal of pathological structures by becoming phagocytic under conditions of neurodegenerative disease when microglia, the professional phagocytes, are impaired. We hypothesized that adenosine triphosphate (ATP), which acts as damage-associated molecular pattern (DAMP), when released at high concentrations into extracellular space, upregulates phagocytic activity of human astrocytes.

Ketone monoester ingestion improves cardiac function in adults with type 2 diabetes: a double-blind, placebo controlled, randomised, crossover trial.

Type 2 diabetes (T2D) is a metabolic disease associated with cardiovascular dysfunction. The myocardium preferentially uses ketones over free fatty acids as a more energy efficient substrate. The primary aim was to assess the effects of ketone monoester (K) ingestion on cardiac output index ().

Effect of exogenous β-hydroxybutyrate on BDNF signaling, cognition, and amyloid precursor protein processing in humans with T2D and insulin-resistant rodents.

People with type 2 diabetes (T2D) have a greater risk of developing neurodegenerative diseases, like Alzheimer's disease, in later life. Exogenous ketone supplements containing the ketone body β-hydroxybutyrate (β-OHB) may be a strategy to protect the brain as β-OHB can support cerebral metabolism and promote neuronal plasticity via expression of brain-derived neurotrophic factor (BDNF). Parallel human (ClinicalTrials.

End user evaluation of the Canadian Spinal Cord Injury Physical Activity Guidelines: Barriers and facilitators to uptake and dissemination in the United States.

Objective: To engage U.S. end users to (1) gather information on facilitators and barriers to awareness and adoption of the Canadian Spinal Cord Injury (SCI) Physical Activity (PA) guidelines; (2) inform potential adaptations to the presentation and messaging of the guidelines; and (3) develop recommendations for targeted dissemination strategies to promote awareness in the United States.

Characterizing the vestibular control of balance in the intrinsic foot muscles.

Background: To maintain standing balance, vestibular cues are processed and integrated with other sensorimotor signals to produce appropriate motor adjustments. Whole-body vestibular-driven postural responses are context-dependent and transformed based upon head and foot posture. Previous reports indicate the importance of intrinsic foot muscles during standing, but it is unclear how vestibular-driven responses of these muscles are modulated by alterations in stability and head posture.

Acute Effect of High-Intensity Interval Exercise on Blood Pressure in Females Living with Type 2 Diabetes and Hypertension.

Background : The acute effects of high-intensity interval training (HIIT) on blood pressure (BP) may depend on the exercise protocol performed. Purpose: To compare the acute effect of high and low-volume HIIT on post-exercise and ambulatory BP in untrained older females diagnosed with both type 2 diabetes (T2D) and hypertension (HTN). Methods: Fifteen females (69 [65 ─ 74] years) completed a crossover study with three experimental conditions: 1) REST (35 min in sitting position); 2) HIIT10 (10 × 1 min at 90% heart rate max [HRmax]), and 3) HIIT4 (4 × 4 min at 90% HRmax).

The use and impact of virtual reality programs supported by aromatherapy for older adults: A scoping review protocol.

Both virtual reality and aromatherapy have shown promising impacts on the health and well-being of older adults. Aromatherapy has been reported to enhance immersive experiences during virtual reality programs. However, studies on the combined use and impact of virtual reality and aromatherapy for older adults have not been systematically reviewed.

Ventilatory Long-Term Facilitation at Rest Increases the Feedforward Contribution to Subsequent Exercise Ventilatory Responses.

The respiratory control system exhibits neural plasticity, adjusting future ventilatory responses based on experience. We tested the hypothesis that ventilatory long-term facilitation induced by hypercapnic acute intermittent hypoxia (AIH) at rest enhances subsequent ventilatory responses to steady-state exercise. Fourteen healthy adults (age = 27 ± 5 years; 7 males) participated in the study.

Differential Associations Between Device-Assessed and Parent-Reported Physical Activity With Indicators of Mental Health in Children and Youth With Disabilities.

Purpose: We examined associations between device-assessed and parent-reported physical activity with mental health indicators among children and youth with disabilities.

Method: Physical activity and mental health data were collected from a larger national surveillance study of physical activity in children and youth with disabilities in Canada. A total of 122 children and youth with disabilities (mean age = 10 y; 80% boys, 57% with developmental disability) wore a Fitbit for 28 days to measure their daily steps.

New evidence for baroreflex and respiratory chemoreflex-mediated cerebral sympathetic activation in humans.

The brain is highly innervated by sympathetic nerve fibers; however, their physiological purpose is poorly understood. We hypothesized that unilateral cerebral norepinephrine (NE) spillover, an index of cerebral sympathetic nerve activity (SNA), would be elevated when engaging the baroreflex [via lower-body negative pressure (LBNP; -20 and -40 Torr)] and respiratory chemoreflexes [via carbon dioxide (CO) administration (+8 Torr)], independently and in combination. Twelve young and healthy participants (five females) underwent simultaneous blood sampling from the right radial artery and internal jugular vein.

The menstrual phase does not impact chemosensitivity during exercise.

At rest, the menstrual cycle phase impacts ventilation and chemosensitivity. However, during exercise there is inconclusive evidence that the menstrual cycle phase affects ventilation or chemosensitivity. We sought to examine the influence of menstrual phase and hormonal birth control (BC) on chemosensitivity.

Cross-sectional analysis of blood leukocyte responsiveness to interleukin-10 and interleukin-6 across age and physical activity level.

Objectives: To determine how the anti-inflammatory actions of interleukin-10 (IL-10) and IL-6 differ across age and physical activity levels.

Methods: Using a cross-sectional design, fasted blood samples were obtained from younger physically inactive (YI: n=10, age: 22.7 ± 3.

Impact of exercise and fasting on mitochondrial regulators in human muscle.

Objectives: To investigate the impact of acute energetic stress (acute HIIE and fasting) on , , , , and in human skeletal muscle.

Methods: The current study performed secondary analyses using muscle biopsy samples from two previously published studies: study 1) leg muscle biopsies from nine men and eight women were obtained pre and 3 h following acute high-intensity interval cycling exercise (HIIE); study 2) leg muscle biopsies were obtained from nine men pre-, during, and post-an 8 h fast with or without 2 h of arm ergometer exercise. RT-PCR was performed on samples from each study to determine the mRNA expression of , , , , and .

Exploring perspectives of type 2 diabetes prevention program coaches and training delivery staff on e-learning training: a qualitative study.

Background: E-learning can be an effective and efficient mode of training healthcare practitioners. E-learning training for diabetes prevention program coaches was designed and developed with input from end users. Insight from those who deliver the training and coaches who have taken the training can provide critical feedback for further refinement of the e-learning training.

An acute bout of 4 × 4-min or 10 × 1-min HIIT improves β cell glucose sensitivity in postmenopausal females with type 2 diabetes: a secondary analysis.

Improvements in glycemic control following acute exercise are typically attributed to improved postexercise insulin sensitivity (IS) with comparatively little known about how acute exercise impacts β cell function, especially in postmenopausal females. We determined how two high-intensity interval training (HIIT) protocols, matched for total estimated energy expenditure, impact β cell function in postmenopausal females with type 2 diabetes. Thirteen postmenopausal females (70 ± 5 yr; 12 ± 7 yr since diagnosis, 80.

"People Need to Know; We're Part of the Community. We're Here.": Examining Experiences of Sharing Demographic Information for a Community-Based Diabetes Prevention Program.

Background: Collecting demographic data is critical for identifying inequities in healthcare services and delivery. Inaccurate collection of demographic data can make developing equitable health interventions and improving reach of existing interventions difficult. This study aimed to (a) examine experiences in completing a community-based type 2 diabetes prevention program Small Steps for Big Changes (SSBC) demographic questionnaire (SSBC-DQ) among adults from equity-owed groups, and (b) assess recommendations for improvement to the questionnaire.

Everyday Social Support for Health Behaviours in Older Adults during Times of Challenge: Evidence from Daily Life Assessments.

The COVID-19 pandemic challenged older adults' health behaviours, making it even more difficult to engage in healthy diets and physical activity than it had been prepandemic. A resource to promote these could be social support. This study uses data from 136 older adults ( = 71.

Multidimensional assessment of exertional dyspnea in young healthy males and females who select unsatisfied inspiration at peak exercise.

Historically, it was thought that healthy humans predominantly described their breathing as a sense of increased work or effort (W/E) during maximal exercise. However, emerging data show that many healthy adults select unpleasant dyspnea descriptors such as "unsatisfied inspiration" (UI), with relatively more females selecting UI than males. We hypothesized that males and females who select UI would report higher dyspnea intensity ratings during exercise, select more distressing dyspnea qualities post exercise, and have greater inspiratory constraints than those who do not.

Trabecular Bone Score in Individuals with Chronic Spinal Cord Injury: A Cross-Sectional Study.

Objectives: To describe lumbar spine (LS) trabecular bone score (TBS) values after SCI, and to explore the differences in fractures risk assessment between FRAX® and TBS-adjusted FRAX® in individuals living with chronic SCI.

Methods: Baseline dual-energy x-ray absorptiometry (DXA) scans from an established cohort were acquired using a Hologic Discovery QDR 4500. TBS measurements were performed using the TBS iNsight software version 2.

Are Diabetes Prevention Programs Reaching Those Most at Risk? A Scoping Review.

Objectives: Previous reviews have highlighted the efficacy of lifestyle diabetes prevention programs (DPPs) in decreasing type 2 diabetes (T2D) risk, but the participating populations were predominantly white. This is concerning as ethnically diverse populations are disproportionately affected by T2D. The objective of this scoping review was to: 1) summarize existing tailored DPPs and 2) provide recommendations for future program implementation to improve access and reach for diverse populations.