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https://www.readbyqxmd.com/read/28436284/exertional-heat-illness-among-secondary-school-athletes
#1
Jill Rodgers, Peggy Slota, Beth Zamboni
Exertional heat illness (EHI) is a leading cause of preventable death among student athletes. While causes and preventative measures for EHI are known, school districts may not be implementing evidence-based practices. This descriptive, exploratory study explored school policies, resources, and practices of coaches in a mid-Atlantic state in the prevention and identification of EHI; 397 responded. Ninety-three percent knew of EHI, but only 52% scheduled acclimatization. Coaches reporting a heat emergency plan (56%) were significantly more likely to follow other evidence-based recommendations: altering equipment ( p < ...
January 1, 2017: Journal of School Nursing: the Official Publication of the National Association of School Nurses
https://www.readbyqxmd.com/read/28430667/investigating-point-to-point-emissivity-variation-of-wounded-tissue
#2
Ellen Keenan, Georgina Gethin, Louisa Flynn, David Watterson, Gerard O'Connor
Infrared cameras are becoming increasingly popular in clinical applications as they allow fast, non-contact temperature measurements. As abnormal heat distribution can indicate illness, infrared cameras have been applied in the prediction, diagnosis and monitoring of conditions (Lahiri, Bagavathiappan, Jayakumar, & Philip, 2012). Current practices, however, often overlook the importance of emissivity when taking thermal measurements. The consensus is that human skin has an emissivity of 0.98 (Soerensen et al...
April 21, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28422207/oxygen-thermomigration-in-acceptor-doped-perovskite
#3
Donghoon Shin, Han-Ill Yoo
The recent proposal of possible oxygen-thermomigration as a plausible mechanism for unipolar resistive switching of oxide memristors is now widely employed in modelling or simulating their memristive function on the grounds of the conventional picture that the mobile component O is always thermophobic, with its reduced heat-of-transport being equal to its migrational enthalpy (qO* = ΔHm > 0). At 1000 °C, we measured the thermomigration of mobile-component O in a prototype memristive perovskite, CaTi0.90Sc0...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28414703/recruitment-methods-and-descriptive-results-of-a-physiologic-assessment-of-latino-farmworkers-the-california-heat-illness-prevention-study
#4
Diane C Mitchell, Javier Castro, Tracey L Armitage, Alondra J Vega-Arroyo, Sally C Moyce, Daniel J Tancredi, Deborah H Bennett, James H Jones, Tord Kjellstrom, Marc B Schenker
OBJECTIVE: The California heat illness prevention study (CHIPS) devised methodology and collected physiological data to assess heat related illness (HRI) risk in Latino farmworkers. METHODS: Bilingual researchers monitored HRI across a workshift, recording core temperature, work rate (metabolic equivalents [METs]), and heart rate at minute intervals. Hydration status was assessed by changes in weight and blood osmolality. Personal data loggers and a weather station measured exposure to heat...
April 14, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28411725/effects-of-heat-stress-on-risk-perceptions-and-risk-taking
#5
Chu-Hsiang Chang, Thomas E Bernard, Jennifer Logan
Exposure to extreme heat at work is a serious occupational hazard, as exposure can result in heat-related illnesses, and it has been linked to increased risk of accidents and injuries. The current study aimed to examine whether heat exposure is related to changes in individuals' psychological process of risk evaluation, and whether acclimatization can mitigate the effect of heat exposure. A study with quasi-experiment research design was used to compare participants' risk perceptions and risk-taking behaviors at baseline, initial exposure to heat, and exposure after acclimatization across male participants who were exposed to heat (N = 6), and males (N = 5) and females (N = 6) who were in the control group who were exposed to ambient temperature...
July 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28408306/heart-failure-and-thermoregulatory-control-can-patients-with-heart-failure-handle-the-heat
#6
REVIEW
Bryce N Balmain, Surendran Sabapathy, Ollie Jay, Julie Adsett, Glenn M Stewart, Rohan Jayasinghe, Norman R Morris
Upon heat exposure, the thermoregulatory system evokes reflex increases in sweating and skin blood flow responses to facilitate heat dissipation and maintain heat balance to prevent the continuing rise in core temperature. These heat dissipating responses are mediated primarily by autonomic and cardiovascular adjustments; which if attenuated, may compromise thermoregulatory control. In patients with heart failure (HF), the neurohumoral and cardiovascular dysfunction that underpins this condition may potentially impair thermoregulatory responses and, consequently, place these patients at a greater risk of heat-related illness...
April 10, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28402203/hydration-and-cooling-practices-among-farmworkers-in-oregon-and-washington
#7
Jeffrey W Bethel, June T Spector, Jennifer Krenz
BACKGROUND: Although recommendations for preventing occupational heat-related illness among farmworkers include hydration and cooling practices, the extent to which these recommendations are universally practiced is unknown. The objective of this analysis was to compare hydration and cooling practices between farmworkers in Oregon and Washington. METHODS: A survey was administered to a purposive sample of Oregon and Washington farmworkers. Data collected included demographics, work history and current work practices, hydration practices, access and use of cooling measures, and headwear and clothing worn...
April 12, 2017: Journal of Agromedicine
https://www.readbyqxmd.com/read/28389141/luteolin-restricts-dengue-virus-replication-through-inhibition-of-the-proprotein-convertase-furin
#8
Minhua Peng, Satoru Watanabe, Kitti Wing Ki Chan, Qiuyan He, Ya Zhao, Zhongde Zhang, Xiaoping Lai, Dahai Luo, Subhash G Vasudevan, Geng Li
The increasing prevalence of dengue fever in the Indian sub-continent and Southern China is a major public health concern. There is currently an approved tetravalent vaccine available in a handful of countries for protection from dengue infection, but its efficacy against dengue virus (DENV) serotype 2 is not ideal and its overall performance in children under 9 years of age is poor. In many of the dengue afflicted countries-traditional medicine is widely used as a panacea for illnesses and here we describe the systematic evaluation of a natural product, luteolin, originating from the "heat clearing" class of herbs...
April 4, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28388909/hospitalizations-for-heat-stress-illness-varies-between-rural-and-urban-areas-an-analysis-of-illinois-data-1987-2014
#9
Jyotsna S Jagai, Elena Grossman, Livia Navon, Apostolis Sambanis, Samuel Dorevitch
BACKGROUND: The disease burden due to heat-stress illness (HSI), which can result in significant morbidity and mortality, is expected to increase as the climate continues to warm. In the United States (U.S.) much of what is known about HSI epidemiology is from analyses of urban heat waves. There is limited research addressing whether HSI hospitalization risk varies between urban and rural areas, nor is much known about additional diagnoses of patients hospitalized for HSI. METHODS: Hospitalizations in Illinois for HSI (ICD-9-CM codes 992...
April 7, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28379784/evaluation-of-diagnostic-codes-in-morbidity-and-mortality-data-sources-for-heat-related-illness-surveillance
#10
Laurel Harduar Morano, Sharon Watkins
OBJECTIVES: The primary objective of this study was to identify patients with heat-related illness (HRI) using codes for heat-related injury diagnosis and external cause of injury in 3 administrative data sets: emergency department (ED) visit records, hospital discharge records, and death certificates. METHODS: We obtained data on ED visits, hospitalizations, and deaths for Florida residents for May 1 through October 31, 2005-2012. To identify patients with HRI, we used codes from the International Classification of Diseases, Ninth Revision, Clinical Modification ( ICD-9-CM) to search data on ED visits and hospitalizations and codes from the International Classification of Diseases, Tenth Revision ( ICD-10) to search data on deaths...
January 1, 2017: Public Health Reports
https://www.readbyqxmd.com/read/28358522/update-exertional-hyponatremia-active-component-u-s-armed-forces-2001-2016
#11
(no author information available yet)
From 2001 through 2016, there were 1,519 incident diagnoses of exertional hyponatremia among active component service members (incidence rate: 6.9 cases per 100,000 person-years [p-yrs]). The incidence rate in 2016 (6.6 cases per 100,000 p-yrs) represented a decrease of 23.3% from 2015. Compared to their respective counterparts, overall incidence rates of exertional hyponatremia were higher among females, those aged 19 years or younger, and recruit trainees. The overall incidence rate during the surveillance period was highest in the Marine Corps, intermediate in the Army and Air Force, and lowest in the Navy...
March 2017: MSMR
https://www.readbyqxmd.com/read/28358520/update-heat-illness-active-component-u-s-armed-forces-2016
#12
(no author information available yet)
In 2016, there were 2,536 incident diagnoses of heat illness among active component service members (incidence rate: 1.96 cases per 1,000 person-years [p-yrs]). The overall crude incidence rates of heat stroke and "other heat illness" were 0.31 and 1.65 per 1,000 p-yrs, respectively. In 2016, subgroup-specific incidence rates of heat stroke were highest among males and service members aged 19 years or younger, Asian/Pacific Islanders, Marine Corps and Army members, recruit trainees, and those in combat-specific and "other" occupations...
March 2017: MSMR
https://www.readbyqxmd.com/read/28349095/cooling-interventions-for-athletes-an-overview-of-effectiveness-physiological-mechanisms-and-practical-considerations
#13
REVIEW
Coen C W G Bongers, Maria T E Hopman, Thijs M H Eijsvogels
Exercise-induced increases in core body temperature could negative impact performance and may lead to development of heat-related illnesses. The use of cooling techniques prior (pre-cooling), during (per-cooling) or directly after (post-cooling) exercise may limit the increase in core body temperature and therefore improve exercise performance. The aim of the present review is to provide a comprehensive overview of current scientific knowledge in the field of pre-cooling, per-cooling and post-cooling. Based on existing studies, we will discuss 1) the effectiveness of cooling interventions, 2) the underlying physiological mechanisms and 3) practical considerations regarding the use of different cooling techniques...
2017: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/28344848/occupational-heat-stress-impacts-on-health-and-productivity-in-a-steel-industry-in-southern-india
#14
Manikandan Krishnamurthy, Paramesh Ramalingam, Kumaravel Perumal, Latha Perumal Kamalakannan, Jeremiah Chinnadurai, Rekha Shanmugam, Krishnan Srinivasan, Vidhya Venugopal
BACKGROUND: Workers laboring in steel industries in tropical settings with high ambient temperatures are subjected to thermally stressful environments that can create well-known risks of heat-related illnesses and limit workers' productivity. METHODS: A cross-sectional study undertaken in a steel industry in a city nicknamed "Steel City" in Southern India assessed thermal stress by wet bulb globe temperature (WBGT) and level of dehydration from urine color and urine specific gravity...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344737/non-invasive-measures-of-core-temperature-versus-ingestible-thermistor-during-exercise-in-the-heat
#15
Donovan L Fogt, Andrea L Henning, Adam S Venable, Brian K McFarlin
The accuracy of core temperature (Tc) thermometry from temporal, tympanic, and oral thermometry devices has been variable during exercise in a hot, humid environment. The purpose of the present study was to cross-validate temporal, two tympanic devices, and oral devices compared to an ingestible thermistor during exercise in a hot, humid environment. Fourteen young, active adults (6 women) completed a graded exercise test until voluntary exhaustion in an environmental chamber (35.5 ± 0.6 °C, 53.9 ± 5.8 % RH)...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28337936/females-exposed-to-24%C3%A2-h-of-sleep-deprivation-do-not-experience-greater-physiological-strain-but-do-perceive-heat-illness-symptoms-more-severely-during-exercise-heat-stress
#16
Rebecca Relf, Ashley Willmott, Jessica Mee, Oliver Gibson, Arron Saunders, Mark Hayes, Neil Maxwell
There is limited and inconclusive evidence surrounding the physiological and perceptual responses to heat stress while sleep deprived, especially for females. This study aimed to quantify the effect of 24 h sleep deprivation on physiological strain and perceptual markers of heat-related illness in females. Nine females completed two 30-min heat stress tests (HST) separated by 48 h in 39°C, 41% relative humidity at a metabolic heat production of 10 W · kg(-1). The non-sleep deprived HST was followed by the sleep deprivation (SDHST) trial for all participants during the follicular phase of the menstrual cycle...
March 24, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28333110/stakeholder-perceptions-of-welfare-issues-and-indicators-for-extensively-managed-sheep-in-australia
#17
Amanda K Doughty, Grahame J Coleman, Geoff N Hinch, Rebecca E Doyle
An online survey was designed to form the basis of a framework for the welfare assessment of extensively managed sheep in Australia. The survey focused on welfare compromise and useful welfare indicators. A total of 952 people completed the survey in its entirety, representing four stakeholder groups: Public (53.6%), Producer (27.4%), Scientist (9.9%), and Service provider (9.1%). Animal welfare was considered to be important by all participating groups in this survey (average score of 3.78/4). Respondents felt the welfare of grazing sheep was generally adequate but improvement was desired (2...
March 23, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28327524/reducing-risk-of-salmonellosis-through-egg-decontamination-processes
#18
REVIEW
Thilini Piushani Keerthirathne, Kirstin Ross, Howard Fallowfield, Harriet Whiley
Eggs have a high nutritional value and are an important ingredient in many food products. Worldwide foodborne illnesses, such as salmonellosis linked to the consumption of eggs and raw egg products, are a major public health concern. This review focuses on previous studies that have investigated the procedures for the production of microbiologically safe eggs. Studies exploring pasteurization and decontamination methods were investigated. Gamma irradiation, freeze drying, hot air, hot water, infra-red, atmospheric steam, microwave heating and radiofrequency heating are all different decontamination methods currently considered for the production of microbiologically safe eggs...
March 22, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28314926/american-football-and-fatal-exertional-heat-stroke-a-case-study-of-korey-stringer
#19
Andrew Grundstein, John A Knox, Jennifer Vanos, Earl R Cooper, Douglas J Casa
On August 1, 2001, Korey Stringer, a Pro Bowl offensive tackle for the Minnesota Vikings, became the first and to date the only professional American football player to die from exertional heat stroke (EHS). The death helped raise awareness of the dangers of exertional heat illnesses in athletes and prompted the development of heat safety policies at the professional, collegiate, and interscholastic levels. Despite the public awareness of this death, no published study has examined in detail the circumstances surrounding Stringer's fatal EHS...
March 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28303131/multiplexed-single-intact-cell-droplet-digital-pcr-music-ddpcr-method-for-specific-detection-of-enterohemorrhagic-e-coli-ehec-in-food-enrichment-cultures
#20
Tanis C McMahon, Burton W Blais, Alex Wong, Catherine D Carrillo
Foodborne illness attributed to enterohemorrhagic E. coli (EHEC), a highly pathogenic subset of Shiga toxin-producing E. coli (STEC), is increasingly recognized as a significant public health issue. Current microbiological methods for identification of EHEC in foods often use PCR-based approaches to screen enrichment broth cultures for characteristic gene markers [i.e., Shiga toxin (stx) and intimin (eae)]. However, false positives arise when complex food matrices, such as beef, contain mixtures of eae-negative STEC and eae-positive E...
2017: Frontiers in Microbiology
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