Heatwaves and human sleep: Stress response versus adaptation
The World Meteorological Organization considers a heatwave as “a period of statistically unusual hot weather persisting for a number of days and nights”. Accompanying the ongoing global climate change, sharp heatwave bouts occur worldwide, growing in frequency and intensity, and beginning earlier in the season. Heatwaves exacerbate the risk of heat-related illnesses, hence human morbidity and mortality, particularly in vulnerable elderly and children. Heat-related illnesses present a continuum from normothermic (prickly heat, heat edema, heat cramps, heat tetany) to hyperthermic syndromes (from heat syncope and heat ex...
Source: Journal of the Neurological Sciences - October 28, 2023 Category: Neurology Authors: Alain Buguet, Manny W. Radomski, Jacques Reis, Peter S. Spencer Source Type: research
Gastrointestinal cell injury and perceived symptoms after running the Boston Marathon
Gastrointestinal (GI) disturbances are a prevalent cause of marathon related complaints, and in extreme cases can promote life-threatening conditions such as exertional heat stroke. Our aim was to study intestinal cell injury [via intestinal fatty acid binding protein (I-FABP)] and perceived GI distress symptoms among marathon runners. We also examined potential risk factors (e.g., inadequate sleep) that could exacerbate GI disturbances in healthy, trained endurance runners. This was a parallel mixed-methods study design. 2019 Boston Marathon participants were recruited via email and subjects completed surveys before the r...
Source: Frontiers in Physiology - October 16, 2023 Category: Physiology Source Type: research
Factors affecting the changes in body mass index among emergency workers at the Fukushima Daiichi Nuclear Power Plant
Ind Health. 2023 Oct 11. doi: 10.2486/indhealth.2023-0009. Online ahead of print.ABSTRACTUnderstanding the effects of lifestyle and radiation on health is important for the health management of disaster recovery workers. International research has demonstrated the relationship between natural disasters and diseases. The lifestyle and working conditions following the Great East Japan Earthquake potentially increased the incidence of cardiovascular disease and obesity among affected individuals. The aim of this study was to analyze the body mass index (BMI) of 1,341 emergency workers who responded to the accident at the Fuku...
Source: Industrial Health - October 11, 2023 Category: Occupational Health Authors: Kenta Tomonaga Akira Ogami Hajime Ando Toshiteru Okubo Source Type: research
Changes in surrogate markers of intestinal epithelial injury and microbial translocation in young and older men during prolonged occupational heat stress in temperate and hot conditions
ConclusionWhile older men may experience greater intestinal epithelial injury following exercise in the heat; this did not lead to a greater magnitude of microbial translocation relative to their younger counterparts. (Source: European Journal of Applied Physiology)
Source: European Journal of Applied Physiology - October 10, 2023 Category: Physiology Source Type: research
IJERPH, Vol. 20, Pages 6891: Medical Care Management Based on Disaster Medicine for the Triathlon Events at the XXXII Olympiad and Tokyo 2020 Paralympic Games
ji Dohi
Planning the medical services for the triathlon competition at the 2020 Tokyo Olympic and Paralympic Games was predicted to be challenging because of possible last-minute changes related to the COVID-19 pandemic and abnormally high temperatures. Therefore, event planners organized and executed a disaster medical care plan, a plan for providing care during emergencies. Based on the basic medical plan for all venues provided by the Tokyo 2020 Organizing Committee, planners for the triathlon venue prepared a medical care plan according to the CSCATTT principles: Command and control, Safety, Communication, Assessme...
Source: International Journal of Environmental Research and Public Health - October 7, 2023 Category: Environmental Health Authors: Masaharu Yagi Ryoji Kasanami Yoko Tarumi Kenji Dohi Tags: Review Source Type: research
Heat stress combined with lipopolysaccharide induces pulmonary microvascular endothelial cell glycocalyx inflammatory damage in vitro
This study indicated that EGCX may con tribute to apoptosis and heat stroke-induced coagulopathy, and these effects may have been due to the decrease in the shedding of EGCX. (Source: Immunity, Inflammation and Disease)
Source: Immunity, Inflammation and Disease - October 6, 2023 Category: Allergy & Immunology Authors: Jiadi Chen,
Chengjia Ding,
Jingjing Cao,
Huasheng Tong,
Yi Chen Tags: ORIGINAL ARTICLE Source Type: research
A century of exercise physiology: concepts that ignited the study of human thermoregulation. Part 3: Heat and cold tolerance during exercise
AbstractIn this third installment of our four-part historical series, we evaluate contributions that shaped our understanding of heat and cold stress during occupational and athletic pursuits. Our first topic concerns how we tolerate, and sometimes fail to tolerate, exercise-heat stress. By 1900, physical activity with clothing- and climate-induced evaporative impediments led to an extraordinarily high incidence of heat stroke within the military. Fortunately, deep-body temperatures > 40 °C were not always fatal. Thirty years later, water immersion and patient treatments mimicking sweat evaporation were found to...
Source: European Journal of Applied Physiology - October 5, 2023 Category: Physiology Source Type: research
