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Temperature: Multidisciplinary Biomedical Journal

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https://read.qxmd.com/read/30906814/modeling-thermal-contact-resistance-at-the-finger-object-interface
#1
Konrad Rykaczewski
Thermal contact resistance at the finger-object interface plays a significant role in our thermal perception and is an important parameter for the design of a myriad of electronics and thermal devices. Currently, its value is measured experimentally or, more commonly, is estimated using a semi-empirical model. This model was developed by Cooper, Mikic, and Yovanovich (CMY) in the 1960s for predicting contact resistance of metal-metal interfaces in a vacuum. In this work, it is shown that measured value of finger-object contact resistance is better predicted by a more recent correlation by Prasher and Matayabas (PM) that was developed by fitting contact resistance data for silicone gel-metal surface interfaces in microelectronic applications...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906813/skeletal-muscle-cold-shock-and-heat-shock-protein-mrna-response-to-aerobic-exercise-in-different-environmental-temperatures
#2
Rebecca L Cuthbert, Robert J Shute, Dustin R Slivka
The response of cold shock proteins to exercise and environmental temperature in human skeletal muscle is not known. The purpose of this study was to determine the early mRNA response of human stress proteins to endurance exercise and environmental temperatures. Seven recreationally trained males cycled for 1 hour at 60% VO2peak in 7°C, 20°C, and 33°C with biopsies taken pre- and 3 hours post-exercise. Gene expression for heat shock and cold shock proteins were analyzed using qRT-PCR on muscle biopsy samples from the vastus lateralis ...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906812/thermoregulatory-burden-of-elite-sailing-athletes-during-exercise-in-the-heat-a-pilot-study
#3
Michelle van Delden, Coen C W G Bongers, Douwe Broekens, Hein A M Daanen, Thijs M H Eijsvogels
Exercising in a hot and humid environment increases core body temperature, which may limit exercise performance. The risk of exercise-induced hyperthermia and associated performance decrement in Olympic sailing athletes is largely unknown. Therefore, this study aimed to compare thermoregulatory responses and performance indicators of elite sailors in a cool versus hot and humid environment. Seven elite athletes from four different Olympic sailing classes (Laser, RS:X, Finn, 470) performed cycling and/or rowing exercise in a cool (18°C) and hot (33°C) environment, while core body temperature (TC ), skin temperature (TSK ), exercise performance (covered distance), and rating of perceived exertion were measured continuously...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906811/upper-body-sweat-mapping-provides-evidence-of-relative-sweat-redistribution-towards-the-periphery-following-hot-dry-heat-acclimation
#4
Caroline J Smith, George Havenith
Purpose : Produce a detailed upper-body sweat map and evaluate changes in gross and regional sweating rates (RSR) and distribution following heat acclimation (HA). Methods : Six males (25 ± 4 yrs) completed six consecutive HA days (45°C, 20% rh) requiring 90 minutes intermittent exercise to maintain a 1.4°C rectal temperature (Tre) rise. Pre- and post-HA upper-body RSR were measured at 55% (Intensity-1; I1) and 75% VO2 max (Intensity-2; I2) using a modified absorbent technique. Results : From day one to six of HA, work rate increased (n...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906810/application-of-evidence-based-recommendations-for-heat-acclimation-individual-and-team-sport-perspectives
#5
REVIEW
J Luke Pryor, Evan C Johnson, William O Roberts, Riana R Pryor
Heat acclimation or acclimatization (HA) occurs with repeated exposure to heat inducing adaptations that enhance thermoregulatory mechanisms and heat tolerance leading to improved exercise performance in warm-to-hot conditions. HA is an essential heat safety and performance enhancement strategy in preparation for competitions in warm-to-hot conditions for both individual and team sports. Yet, some data indicate HA is an underutilized pre-competition intervention in athletes despite the well-known benefits; possibly due to a lack of practical information provided to athletes and coaches...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906809/towards-establishing-evidence-based-guidelines-on-maximum-indoor-temperatures-during-hot-weather-in-temperate-continental-climates
#6
REVIEW
Glen P Kenny, Andreas D Flouris, Abderrahmane Yagouti, Sean R Notley
Rising environmental temperatures represent a major threat to human health. The activation of heat advisories using evidence-based thresholds for high-risk outdoor ambient temperatures have been shown to be an effective strategy to save lives during hot weather. However, although the relationship between weather and human health has been widely defined by outdoor temperature, corresponding increases in indoor temperature during heat events can also be harmful to health especially in vulnerable populations. In this review, we discuss our current understanding of the relationship between outdoor temperature and human health and examine how human health can also be adversely influenced by high indoor temperatures during heat events...
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906808/the-interaction-between-neurokinin-1-receptors-and-cyclooxygenase-2-in-fever-genesis
#7
Patrik Keringer, Zoltan Rumbus
No abstract text is available yet for this article.
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906807/left-out-in-the-cold-serving-wines-chilled
#8
EDITORIAL
Christopher T Simons
No abstract text is available yet for this article.
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30906806/article
#9
(no author information available yet)
No abstract text is available yet for this article.
2019: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574531/about-the-cover
#10
(no author information available yet)
No abstract text is available yet for this article.
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574530/thyroid-stimulating-hormone-tsh-autoregulation-reduces-variation-in-the-tsh-response-to-thyroid-hormones
#11
Stephen Paul Fitzgerald, Nigel Geoffrey Bean
The physiological functions of Thyroid Stimulating Hormone (TSH) autoregulation, the ultra-short feedback loop inhibition of TSH by TSH itself, have not been determined. In this work we explored the role of TSH autoregulation in thyroid homeostasis. We synthesized the known physiology of autoregulation with theknown physiological relationships between thyroid hormones; in particular between free thyroxine and TSH. We analysed the implications of TSH autoregulation, on the generation of the TSH response to free thyroxine (the 'TSH curve'), and on the variation inthis response, which might result from variations in hypothalamopituitary or thyroid gland function...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574529/ice-slurry-ingestion-during-break-times-attenuates-the-increase-of-core-temperature-in-a-simulation-of-physical-demand-of-match-play-tennis-in-the-heat
#12
Takashi Naito, Hiroyuki Sagayama, Nobuhiko Akazawa, Miki Haramura, Masahiro Tasaki, Hideyuki Takahashi
This investigation assessed the effect of ice slurry ingestion compared to that of cold water ingestion during break times on thermal strain and perception in simulated match-play tennis in the heat. Seven male recreational athletes (age = 22 ± 2 yr, height = 1.72 ± 0.08 m, Body mass = 64.8 ± 6.8 kg) performed two trials in a climate chamber, each time completing 4 sets of simulated match-play. During International Tennis Federation-mandated breaks (90-s between odd-numbered games; 120-s between sets), either ice slurry or cold water were ingested...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574528/post-exercise-cold-water-immersion-improves-the-performance-in-a-subsequent-5-km-running-trial
#13
Fabrício De Paula, Kurt Escobar, Vinícius Ottone, Paula Aguiar, Mariana Aguiar de Matos, Tamiris Duarte, Tatiane Araújo, Karine Costa, Flávio Magalhães, Etel Rocha-Vieira, Fabiano Amorim
Various post-exercise strategies have been proposed to accelerate recovery during periods of training. However, the effects of water immersion (WI) temperature on recovery amid multiple daily exercise bouts are not well investigated. PURPOSE: To evaluate the effects of cold and warm water immersion temperatures between acute exercise bouts vs. no WI recovery on running performance. METHODS: Nine recreationally trained men (age: 24.0 ± 6.0 years old) participated in four experimental sessions using a crossover design...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574527/occupational-cooling-practices-of-emergency-first-responders-in-the-united-states-a-survey
#14
Aaron J E Bach, Matthew J Maley, Geoffrey M Minett, Ian B Stewart
Despite extensive documentation directed specifically toward mitigating thermal strain of first responders, we wished to ascertain the degree to which first responders applied cooling strategies, and what opinions are held by the various agencies/departments within the United States. An internet-based survey of first responders was distributed to the International Association of Fire Chiefs, International Association of Fire Firefighters, National Bomb Squad Advisory Board and the USA Interagency Board and their subsequent departments and branches...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574526/sodium-bicarbonate-ingestion-improves-repeated-high-intensity-cycling-performance-in-the-heat
#15
Toby Mündel
The purpose of this study was to investigate the effect of sodium bicarbonate ingestion on performance and recovery of the Wingate test during exercise in the heat. At 30 °C (∼50% relative humidity), ten male team sport athletes (mean values ± SD; age = 22 ± 4 y; body mass = 76 ± 9 kg) completed two 30s Wingate tests using a resistive load of 7.5% of body mass separated by 5 min of active recovery. They consumed either sodium bicarbonate (0.5g·kg-1 body mass) or sodium chloride as a taste-matched placebo (0...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574525/drivers-of-diversity-in-human-thermal-perception-a-review-for-holistic-comfort-models
#16
REVIEW
Marcel Schweiker, Gesche M Huebner, Boris R M Kingma, Rick Kramer, Hannah Pallubinsky
Understanding the drivers leading to individual differences in human thermal perception has become increasingly important, amongst other things due to challenges such as climate change and an ageing society. This review summarizes existing knowledge related to physiological, psychological, and context-related drivers of diversity in thermal perception. Furthermore, the current state of knowledge is discussed in terms of its applicability in thermal comfort models, by combining modelling approaches of the thermoneutral zone (TNZ) and adaptive thermal heat balance model (ATHB)...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574524/the-role-of-neutrophil-granulocytes-in-immune-to-brain-communication
#17
REVIEW
Fabian Johannes Pflieger, Jessica Hernandez, Hanna Schweighöfer, Christiane Herden, Bernhard Rosengarten, Christoph Rummel
Immune-to-brain communication has been studied in a variety of experimental models. Crucial insights into signalling and mechanisms were previously revealed in studies investigating fever induction pathways. The scientific community has primarily focused on neuronal and humoral pathways in the manifestation of this response. Emerging evidence has now shown that immune-to-brain signalling via immune cells is pivotal for normal brain function and brain pathology. The present manuscript aims to provide a brief overview on the current understanding of how immune cells signal to the brain...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30574523/cumulative-effects-of-successive-workdays-in-the-heat-on-thermoregulatory-function-in-the-aging-worker
#18
Sean R Notley, Robert D Meade, Andrew W D'Souza, Gregory W McGarr, Glen P Kenny
No abstract text is available yet for this article.
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30393754/hypothesis-fever-control-a-niche-for-alpha-2-agonists-in-the-setting-of-septic-shock-and-severe-acute-respiratory-distress-syndrome
#19
REVIEW
F Petitjeans, S Leroy, C Pichot, A Geloen, M Ghignone, L Quintin
During severe septic shock and/or severe acute respiratory distress syndrome (ARDS) patients present with a limited cardio-ventilatory reserve (low cardiac output and blood pressure, low mixed venous saturation, increased lactate, low PaO2/FiO2 ratio, etc.), especially when elderly patients or co-morbidities are considered. Rescue therapies (low dose steroids, adding vasopressin to noradrenaline, proning, almitrine, NO, extracorporeal membrane oxygenation, etc.) are complex. Fever, above 38.5-39.5°C, increases both the ventilatory (high respiratory drive: large tidal volume, high respiratory rate) and the metabolic (increased O2 consumption) demands, further limiting the cardio-ventilatory reserve...
2018: Temperature: Multidisciplinary Biomedical Journal
https://read.qxmd.com/read/30393753/no-clear-benefit-of-muscle-heating-on-hypertrophy-and-strength-with-resistance-training
#20
Antony M J Stadnyk, Nancy J Rehrer, Phil J Handcock, Kim A Meredith-Jones, James D Cotter
Heat is a major stressor during exercise, though its value in driving adaptation is not well understood. Muscle heating can upregulate pathways facilitating protein synthesis and could thereby enhance effects of exercise training, however, few studies have investigated this possibility. We examined whether heating active muscle during resistance training differentially affected physical and functional adaptations. Within a randomised contralateral-limb control study, ten healthy, resistance-untrained individuals (21 ± 3 y; 5 female) completed 30 sessions of progressive resistance training (12 weeks), performing 4 × 8 unilateral knee extensions at 70% of 1RM...
2018: Temperature: Multidisciplinary Biomedical Journal
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