Temperature Pub Date : 2025-05-01 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2475420

Pradeep Guin, Nandita Bhan, Keshav Sethi

{"title":"Mortality due to heatstroke and exposure to cold: Evidence from India.","authors":"Pradeep Guin, Nandita Bhan, Keshav Sethi","doi":"10.1080/23328940.2025.2475420","DOIUrl":"https://doi.org/10.1080/23328940.2025.2475420","url":null,"abstract":"The effects of exposure to extreme heat and cold temperatures on human health have mostly been studied in high-income countries. We examined this association by exploring the effect of extreme temperatures on mortality due to heatstroke and exposure to cold in India and by states. We used temperature data from the Indian Meteorological Department (IMD) and mortality data from the National Crime Records Bureau (NCRB) to examine trends in overall, gender, and age-specific mortality. We used structural breaks analysis to observe changes in India's mortality trends during 2001-2019. We examined the time trends in the relationship between extreme temperature and mortality for 24 Indian states from 2001 to 2014. We used panel regression and spline regression models. Between 2001 and 2019, India reported 19,693 and 15,197 deaths due to heatstroke and cold exposure, respectively. Top three states with the greatest number of deaths due to heatstroke were Andhra Pradesh, Uttar Pradesh, and Punjab; for cold exposure it was Uttar Pradesh, Punjab, and Bihar. Working-age men were significantly more susceptible to heatstroke. Spline regression results indicated that mortality varied across different temperature bins for both extreme summer and winter temperatures. Our findings demonstrate an urgent need to strengthen welfare and social support systems and invest in built environment and livelihood interventions to counter the avoidable mortality from extreme temperature events.","PeriodicalId":36837,"journal":{"name":"Temperature","volume":"12 2","pages":"179-199"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12051615/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144040397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of menopause on temperature regulation. 更年期对体温调节的影响。

Temperature Pub Date : 2025-04-23 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2484499

Marie Gombert-Labedens, Kristine Vesterdorf, Andrea Fuller, Shane K Maloney, Fiona C Baker

{"title":"Effects of menopause on temperature regulation.","authors":"Marie Gombert-Labedens, Kristine Vesterdorf, Andrea Fuller, Shane K Maloney, Fiona C Baker","doi":"10.1080/23328940.2025.2484499","DOIUrl":"https://doi.org/10.1080/23328940.2025.2484499","url":null,"abstract":"Changes in thermoregulation, notably the emergence of hot flashes, occur during the menopause transition in association with reproductive hormonal changes. Hot flashes constitute the most characteristic symptom of menopause (prevalence of 50-80%), and have a substantial negative effect on quality of life. Here, we review the endocrine changes associated with menopause and the thermoregulatory system and its sensitivity to female sex hormones. We then review current knowledge on the underlying neural mechanisms of hot flashes and how the reproductive and thermoregulatory systems interact in females. We consider the kisspeptin-neurokinin B-dynorphin (KNDy) neuron complex, which becomes hyperactive when estradiol levels decrease. KNDy neurons project from the arcuate nucleus to thermoregulatory areas within the hypothalamic preoptic area, where heat loss mechanisms are triggered, including cutaneous vasodilation and sweating - characteristics of the hot flash. We describe the physiology and measurement of hot flashes and discuss the mixed research findings about thresholds for sweating in symptomatic individuals. We consider the unique situation of hot flashes that arise during sleep, and discuss the relationships between the environment, exercise, and body mass index with hot flashes. We also discuss the unique situation of surgical menopause (with oophorectomy) and cancer therapy, conditions that are associated with frequent, severe, hot flashes. We then provide an overview of treatments of hot flashes, including hormone therapy and targeted neurokinin B-antagonists, recently developed to target the neural mechanism of hot flashes. Finally, we highlight gaps in knowledge about menopausal thermoregulation and hot flashes and suggest future directions for research.","PeriodicalId":36837,"journal":{"name":"Temperature","volume":"12 2","pages":"92-132"},"PeriodicalIF":0.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12051537/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144000162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prolonged heat acclimation: Elaborated considerations on key findings and methodological approach. 长时间热驯化：对主要发现和方法方法的详细考虑。

Temperature Pub Date : 2025-04-15 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2483054

Claes Cubel, Lars Nybo

引用次数: 0

About the Cover. 关于封面。

Temperature Pub Date : 2025-04-10 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2492480

引用次数: 0

About the Cover. 关于封面。

Temperature Pub Date : 2025-04-04 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2485539

引用次数: 0

Both hot- and thermoneutral-water immersion reduce 24-h blood pressure in people with hypertension: A randomized crossover study. 热水浸泡和热中性水浸泡均可降低高血压患者24小时血压：一项随机交叉研究

Temperature Pub Date : 2025-02-27 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2465025

Brendon H Roxburgh, Holly A Campbell, James D Cotter, Michael J A Williams, Kate N Thomas

{"title":"Both hot- and thermoneutral-water immersion reduce 24-h blood pressure in people with hypertension: A randomized crossover study.","authors":"Brendon H Roxburgh, Holly A Campbell, James D Cotter, Michael J A Williams, Kate N Thomas","doi":"10.1080/23328940.2025.2465025","DOIUrl":"https://doi.org/10.1080/23328940.2025.2465025","url":null,"abstract":" The objective of this study was to characterize the 24-h blood pressure response following an acute hot-water immersion exposure, specifically examining the effect of immersion duration and water temperature, in people with hypertension. Sixteen participants (11 females; 62 ± 7 y; 31.7 ± 7.5 kg.m-2) with hypertension (taking at least one anti-hypertensive medication) completed four randomized sessions: 1) 20-min and 2) 40-min hot-water immersion (40°C), 3) 40-min thermoneutral immersion (36.5°C), and 4) control (seated, no immersion). Blood pressure, heart rate, perceptual and affective responses were recorded throughout exposure. Immediately after exposure, participants were fitted with an ambulatory blood pressure monitor for the following 24 h. Twenty-four-hour SBP was 7 mm Hg lower (95% CI: -11, -2; p = 0.001) after the 40-min hot-water immersion and 6 mm Hg lower after both the 20-min hot-water immersion (-10, -1; p = 0.006) and 40-min thermoneutral immersion (-9, -3; p = 0.002) compared to control; these effects were similar across nighttime (i.e. 10 pm-6 am) and daytime periods. Twenty-four-hour DBP was not statistically different across any exposure (p = 0.093). The percentage of 24 h in target range for SBP (110-130 mm Hg) more than doubled (39% vs. 18%) following the 40-min hot-water immersion, compared to control. Clinically meaningful decreases in systolic blood pressure were evident with hot-water immersion in people with hypertension; these effects were present irrespective of immersion duration (i.e. 20 min vs. 40 min) or water temperature (36.5°C vs 40°C).","PeriodicalId":36837,"journal":{"name":"Temperature","volume":"12 2","pages":"166-178"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12051523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144049932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unresolved questions in prolonged heat acclimation: Insights and methodological considerations: Letter on: Cubel C, Fischer M, Stampe D, et al. Time-course for onset and decay of physiological adaptations in endurance trained athletes undertaking prolonged heat acclimation training. Temperature. 2024;11(4):350-362. doi:10.1080/23328940.2024.2383505. 长时间热驯化中未解决的问题：见解和方法考虑：信上：Cubel C， Fischer M, Stampe D，等。接受长时间热适应训练的耐力训练运动员生理适应开始和衰退的时间过程。温度。2024;11(4):350 - 362。doi: 10.1080 / 23328940.2024.2383505。

Temperature Pub Date : 2025-02-23 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2460866

Donghyeon Kim, Joey W Grubb, Robert A Huggins, Douglas J Casa

引用次数: 0

Mixed pre-cooling improves thermal strain but not running performance in female endurance athletes exercising in the heat across the menstrual cycle. 混合预冷可以改善女性耐力运动员在月经周期高温下锻炼时的热应变，但不能改善其跑步表现。

Temperature Pub Date : 2025-02-22 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2465023

Lilia Convit, Julien D Périard, Amelia J Carr, Stuart Warmington, Gunjit Motiyani, Liliana Orellana, Rhiannon M J Snipe

{"title":"Mixed pre-cooling improves thermal strain but not running performance in female endurance athletes exercising in the heat across the menstrual cycle.","authors":"Lilia Convit, Julien D Périard, Amelia J Carr, Stuart Warmington, Gunjit Motiyani, Liliana Orellana, Rhiannon M J Snipe","doi":"10.1080/23328940.2025.2465023","DOIUrl":"https://doi.org/10.1080/23328940.2025.2465023","url":null,"abstract":"This study investigated the effect of mixed pre-cooling (cooling vest and ice-slurry) on thermal and cardiovascular strain and performance in unacclimatized females exercising in the heat during menstrual cycle (MC) Phase-1 (low estrogen and progesterone) and Phase-4 (moderate estrogen and high progesterone). In a randomized crossover design, 11 runners completed two trials in each MC Phase: mixed pre-cooling (wearing a cooling vest around the torso for 30 min and ingesting 7.5 g.kg-1 of body mass of ice slurry), and control (equivalent slurry volume at ~20°C without a cooling vest), prior to a 10-km running time trial (TT) in 34°C and 60% relative humidity. Rectal temperature (Tre), heart rate (HR), and perceptual responses were measured throughout the TT. Linear mixed models were fitted to estimate intervention and MC phase effects. Mixed pre-cooling had no effect on HR (1.06 [-0.83, 2.95] beats.min-1; p = 0.272) or TT completion time (-0.23 [-1.32, 0.86] min; p = 0.677) versus control. Tre (-0.21 [-0.34, -0.07] °C; p = 0.003) and thermal sensation (-0.61 [-0.78, -0.44] au; p < 0.001) were significantly lower with mixed pre-cooling compared to control. Rise in Tre (-0.1 [-0.3, 0.0] °C) and thermal sensation were attenuated in MC phase-4 (-0.57 [-0.81, -0.34] au; all p < 0.05). Mixed pre-cooling was effective at attenuating the rise in Tre for a similar work rate, particularly in MC phase-4, where females may experience greater heat thermosensation. However, the magnitude of attenuated Tre does not improve 10-km running performance in the heat, suggesting additional cooling and/or heat mitigation strategies may be required to improve performance.","PeriodicalId":36837,"journal":{"name":"Temperature","volume":"12 2","pages":"133-148"},"PeriodicalIF":0.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12051581/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143989690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Global warming, Arctic exploration, and imprisonment of political opponents: Temperature is ubiquitous. 全球变暖、北极探险、政治对手入狱：温度无处不在。

Temperature Pub Date : 2025-02-17 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2464964

Andrej A Romanovsky

引用次数: 0

Consequences of climate change on human health and performance and mitigation strategies in Brazil. 巴西气候变化对人类健康的影响、绩效和缓解战略。

Temperature Pub Date : 2025-02-07 eCollection Date: 2025-01-01 DOI: 10.1080/23328940.2025.2459997

Samuel P Wanner, Daniel P Bitencourt, Francisco Teixeira-Coelho, Thales N Prímola-Gomes

引用次数: 0

Temperature最新文献