Robert D. Meade
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View article: Responding to rising heat in workplaces and homes of low income workers
Responding to rising heat in workplaces and homes of low income workers Open
View article: Effect of foot immersion and neck cooling on renal, intestinal, immune and inflammatory markers in older adults exposed to extreme heat
Effect of foot immersion and neck cooling on renal, intestinal, immune and inflammatory markers in older adults exposed to extreme heat Open
Older adults with reduced thermoregulatory capabilities are increasingly at risk of heat‐related pathophysiological outcomes (e.g., acute kidney injury, heatstroke) due to increasingly frequent, prolonged and intense heatwaves. Foot immers…
View article: The physiology of survival: Heat
The physiology of survival: Heat Open
View article: An Evaluation of Health and Safety Personnel and Workers' Occupational Heat Stress Knowledge in Ontario: Paper B
An Evaluation of Health and Safety Personnel and Workers' Occupational Heat Stress Knowledge in Ontario: Paper B Open
Introduction With the frequency and intensity of extreme heat events rising, occupational health and safety (OHS) personnel must be well‐informed about heat management solutions. Consequently, assessing the knowledge level and technical ex…
View article: Developing and Refining a Knowledge Assessment Instrument for Individuals Involved in Managing Occupational Heat Stress: Paper A
Developing and Refining a Knowledge Assessment Instrument for Individuals Involved in Managing Occupational Heat Stress: Paper A Open
Introduction Occupational heat stress poses a critical threat to workers' health, safety, and productivity. To effectively manage this hazard, occupational health and safety (OHS) representatives must comprehensively understand heat stress…
View article: Effect of Ceiling Fans on Core Temperature in Bed‐Resting Older Adults Exposed to Indoor Overheating
Effect of Ceiling Fans on Core Temperature in Bed‐Resting Older Adults Exposed to Indoor Overheating Open
Background Rising global temperatures have increased indoor overheating risks, posing significant health threats to vulnerable populations, particularly older adults. While electric fans are recommended for cooling at temperatures up to 40…
View article: Defining Sex‐ and Age‐Specific Initial Stay Times for Continuous Moderate‐Intensity Work in Hot Environments Before Heat‐Mitigation Controls Are Implemented – Part A
Defining Sex‐ and Age‐Specific Initial Stay Times for Continuous Moderate‐Intensity Work in Hot Environments Before Heat‐Mitigation Controls Are Implemented – Part A Open
Rationale Industry guidelines recommend work‐rest allocations to limit increases in core temperature (Tcore; > 38.0°C or > Δ1.0°C above resting) during work in the heat. However, the initial duration of permissible work before implementing…
View article: Defining Sex‐ and Age‐Specific Initial Stay Times for Continuous Heavy‐Intensity Work in Hot Environments Before Heat‐Mitigation Controls Are Implemented—Part B
Defining Sex‐ and Age‐Specific Initial Stay Times for Continuous Heavy‐Intensity Work in Hot Environments Before Heat‐Mitigation Controls Are Implemented—Part B Open
Rationale Industry guidelines recommend work‐rest schedules to prevent unsafe core temperature elevations (> 38.0°C or > Δ1.0°C above baseline resting) in an “average” worker exposed to occupational heat stress. While permissible initial w…
View article: The efficacy of foot and neck cooling on autophagy and cellular stress responses in peripheral blood mononuclear cells from older adults exposed to extreme heat
The efficacy of foot and neck cooling on autophagy and cellular stress responses in peripheral blood mononuclear cells from older adults exposed to extreme heat Open
As the incidence and severity of heatwaves continue to rise, there is an urgent need to develop accessible and sustainable heat-alleviation strategies. We evaluated the use of foot immersion in cool water with or without the addition of a …
View article: Humans exercising in the heat: A review on sweat models and a comparison to recent experimental datasets
Humans exercising in the heat: A review on sweat models and a comparison to recent experimental datasets Open
Sweating is a vital thermoregulatory mechanism in humans for maintaining thermal balance during exercise and exposure to hot environments. The development of models that predict sweat rate based on body temperature has been ongoing for ove…
View article: Irisin and betatrophin responses to 9 h of passive heat exposure: Influence of age, hypertension, and type 2 diabetes
Irisin and betatrophin responses to 9 h of passive heat exposure: Influence of age, hypertension, and type 2 diabetes Open
Age‐ and disease‐related metabolic responses to prolonged passive heat exposure are poorly understood. We evaluated serum irisin and betatrophin responses to 9 h of passive heat exposure (40°C, 9% relative humidity) in 19 young adults (19–…
View article: Effect of pedestal fan use on serum stress biomarkers in older adults exposed to simulated daylong indoor overheating
Effect of pedestal fan use on serum stress biomarkers in older adults exposed to simulated daylong indoor overheating Open
There is an urgent need to develop targeted heat‐alleviation strategies to protect heat‐vulnerable older adults. We have shown that electric fan use had nominal impact on reducing body core temperature and cardiovascular strain during dayl…
View article: Validating new limits for human thermoregulation
Validating new limits for human thermoregulation Open
Recent projections suggest that large geographical areas will soon experience heat and humidity exceeding limits for human thermoregulation. The survivability limits modeled in that research were based on laboratory studies suggesting that…
View article: Meta-analysis of heat-induced changes in cardiac function from over 400 laboratory-based heat exposure studies
Meta-analysis of heat-induced changes in cardiac function from over 400 laboratory-based heat exposure studies Open
View article: Biophysical versus machine learning models for predicting rectal and skin temperatures in older adults
Biophysical versus machine learning models for predicting rectal and skin temperatures in older adults Open
This study compares the efficacy of machine learning models to traditional biophysical models in predicting rectal (Tre) and skin (Tsk) temperatures of older adults (≥60 years) during prolonged heat exposure. Five mac…
View article: Effect of brief ambient cooling on serum stress biomarkers in older adults during a daylong heat exposure: a laboratory-based heat wave simulation
Effect of brief ambient cooling on serum stress biomarkers in older adults during a daylong heat exposure: a laboratory-based heat wave simulation Open
Visiting an air-conditioned location during heat exposure reduces physiological strain; however, the effects on gastrointestinal barrier dysfunction and renal ischemia remain unexplored. We compared serum protein responses during a 9 h hea…
View article: Addressing Poverty and Homelessness is Central to an Equity-Focused Response to Climate Change: Considering Canada as an Example
Addressing Poverty and Homelessness is Central to an Equity-Focused Response to Climate Change: Considering Canada as an Example Open
People experiencing poverty are highly exposed to climatic events due to multiple intersecting factors. This commentary centres on poverty, generally, and homelessness, specifically in considering the impacts of climate change on health eq…
View article: Foot immersion with and without neck cooling reduces self-reported environmental symptoms in older adults exposed to simulated indoor overheating
Foot immersion with and without neck cooling reduces self-reported environmental symptoms in older adults exposed to simulated indoor overheating Open
While foot immersion and neck cooling have been recommended for protecting heat-vulnerable groups, recent evidence does not support their efficacy for mitigating increases in physiological heat strain in older adults. However, their influe…
View article: The effect of foot immersion and neck cooling on cardiac autonomic function in older adults exposed to indoor overheating: a randomized crossover trial
The effect of foot immersion and neck cooling on cardiac autonomic function in older adults exposed to indoor overheating: a randomized crossover trial Open
Foot immersion and neck cooling are recommended cooling strategies for protecting heat-vulnerable persons during heat waves. While we recently showed that these strategies do not limit core temperature increases in older adults during prol…
View article: Markers of enterocyte damage, microbial translocation, and systemic inflammation following 9 h of heat exposure in young and older adults
Markers of enterocyte damage, microbial translocation, and systemic inflammation following 9 h of heat exposure in young and older adults Open
Heat stress induced damage to the gastrointestinal barrier can induce local and systemic inflammatory reactions implicated in heat-stroke. Gastrointestinal barrier damage has been shown to be greater in older relative to young adults follo…
View article: An exploratory survey of on-site heat stress management practices in the Canadian mining industry
An exploratory survey of on-site heat stress management practices in the Canadian mining industry Open
With climate change fueling more frequent and intense periods of hot weather, heat stress management programs are becoming increasingly important for protecting the health and safety of workers in the Canadian mining industry. While the in…
View article: A critical review of the effectiveness of electric fans as a personal cooling intervention in hot weather and heatwaves
A critical review of the effectiveness of electric fans as a personal cooling intervention in hot weather and heatwaves Open
Health agencies worldwide have historically cautioned that electric fans accelerate body-heat gain during hot weather and heatwaves (typically in air temperatures ≥35°C). However, guidance published since 2021 has suggested that fans can s…
View article: Agreement between measured and self‐reported physiological strain in males and females during simulated occupational heat stress
Agreement between measured and self‐reported physiological strain in males and females during simulated occupational heat stress Open
Rationale Monitoring physiological strain is recommended to safeguard workers during heat exposure, but is logistically challenging. The perceptual strain index (PeSI) is a subjective estimate thought to reflect the physiological strain in…
View article: Effects of Daylong Exposure to Indoor Overheating on Thermal and Cardiovascular Strain in Older Adults: A Randomized Crossover Trial
Effects of Daylong Exposure to Indoor Overheating on Thermal and Cardiovascular Strain in Older Adults: A Randomized Crossover Trial Open
Core temperature and cardiovascular strain were not appreciably altered following 8-h exposure to 26°C but increased progressively in conditions above this threshold. These data support proposals for the establishment of a 26°C indoor temp…
View article: Body Core Temperature After Foot Immersion and Neck Cooling in Older Adults Exposed to Extreme Heat
Body Core Temperature After Foot Immersion and Neck Cooling in Older Adults Exposed to Extreme Heat Open
This randomized study evaluates the hypothesis that foot immersion in cool water alone or with supplemental neck cooling mitigates increases in core temperature in older adults exposed to environmental conditions simulating deadly heat wav…
View article: Hot Topic: A Systematic Review and Content Analysis of Heat-Related Messages During the 2021 Heat Dome in Canada
Hot Topic: A Systematic Review and Content Analysis of Heat-Related Messages During the 2021 Heat Dome in Canada Open
Context: During the summer of 2021, western Canada experienced a deadly heat event. From the first heat alert to postevent reporting, thousands of media articles were published that reference the heat event. However, a gap remains in under…
View article: Experimental research in environmentally induced hyperthermic older persons: A systematic quantitative literature review mapping the available evidence
Experimental research in environmentally induced hyperthermic older persons: A systematic quantitative literature review mapping the available evidence Open
The heat-related health burden is expected to persist and worsen in the coming years due to an aging global population and climate change. Defining the breadth and depth of our understanding of age-related changes in thermoregulation can i…
View article: Efficacy of Cooling Centers for Mitigating Physiological Strain in Older Adults during Daylong Heat Exposure: A Laboratory-Based Heat Wave Simulation
Efficacy of Cooling Centers for Mitigating Physiological Strain in Older Adults during Daylong Heat Exposure: A Laboratory-Based Heat Wave Simulation Open
Brief air-conditioning exposure during a simulated heat wave caused a robust but transient reduction in core temperature and cardiovascular strain. These findings provide important experimental support for national and international guidan…
View article: Association between haemoglobin A<sub>1c</sub> and whole‐body heat loss during exercise‐heat stress in physically active men with type 2 diabetes
Association between haemoglobin A<sub>1c</sub> and whole‐body heat loss during exercise‐heat stress in physically active men with type 2 diabetes Open
Type 2 diabetes is associated with a reduced capacity to dissipate heat. It is unknown whether this impairment is related to glycaemic control (indexed by glycated haemoglobin; haemoglobin A 1c ) is unknown. We evaluated the association be…
View article: Latent Classes of Adverse and Benevolent Childhood Experiences in a Multinational Sample of Parents and Their Relation to Parent, Child, and Family Functioning during the COVID-19 Pandemic
Latent Classes of Adverse and Benevolent Childhood Experiences in a Multinational Sample of Parents and Their Relation to Parent, Child, and Family Functioning during the COVID-19 Pandemic Open
Adverse Childhood Experiences (ACEs) are known to contribute to later mental health. Conversely, Benevolent Childhood Experiences (BCEs) may buffer against mental health difficulties. The importance of ACEs and BCEs for mental health of bo…