Whole-body heat exchange in women during constant- and variable-intensity work in the heat

Notley, Sean R.; D’Souza, Andrew W.; Meade, Robert D.; Richards, Brodie J.; Kenny, Glen P.

doi:10.1007/s00421-020-04486-3

Cited by 4 publications

(4 citation statements)

References 41 publications

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“…2020). This production of metabolic heat does not vary between the sexes even when in combination of brief periods of high intensity work (Notley et al, 2020). However, when workload is continuous and at a high intensity (250-300 W/m 2 for 30-60 min) women display a reduced evaporative heat loss response relative to men Observed differences in exertional heat stress between males and females across species.…”

Section: • What Advances Does It Highlight?mentioning

confidence: 90%

“…In women, the morphological characteristics described above should contribute to lower metabolic heat production and increased heat dissipation capacity in compensable environments relative to men. However, under experimental conditions in a cycling task, metabolic heat load is similar between men and women when workload intensity is low (metabolic heat production: <200 W/m 2 ) (Notley et al., 2020). This production of metabolic heat does not vary between the sexes even when in combination of brief periods of high intensity work (Notley et al., 2020).…”

Section: Physical Differences Contribute To Differences In Thermoregu...mentioning

confidence: 99%

“…However, under experimental conditions in a cycling task, metabolic heat load is similar between men and women when workload intensity is low (metabolic heat production: <200 W/m 2 ) (Notley et al., 2020). This production of metabolic heat does not vary between the sexes even when in combination of brief periods of high intensity work (Notley et al., 2020). However, when workload is continuous and at a high intensity (250–300 W/m 2 for 30–60 min) women display a reduced evaporative heat loss response relative to men (Gagnon & Kenny, 2012).…”

Section: Physical Differences Contribute To Differences In Thermoregu...mentioning

confidence: 99%

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Are there sex differences in risk for exertional heat stroke? A translational approach

Giersch

Garcia

Stachenfeld

et al. 2022

Experimental Physiology

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New Findings What is the topic of this review?Whether there are sex differences in exertional heat stroke. What advances does it highlight?This review utilizes a translational model between animal and human research to explore possible physical and physiological differences with respect to risk and treatment of exertional heat stroke. Abstract Exertional heat stroke (EHS) is a potentially fatal condition brought about by a combination of physical activity and heat stress and resulting in central nervous system dysfunction and organ damage. EHS impacts several hundred individuals each year ranging from military personnel, athletes, to occupational workers. Understanding the pathophysiology and risk factors can aid in reducing EHS across the globe. While we know there are differences between sexes in mechanisms of thermoregulation, there is currently not a clear understanding of if or how those differences impact EHS risk. The purpose of this review is to assess the current status of the literature surrounding EHS from risk factors to treatment using both animal and human models. We use a translational approach, considering both animal and human research to elucidate the possible influence of female sex hormones on temperature regulation and performance in the heat and highlight the specific areas with limited research. While more work is necessary to comprehensively understand these differences, the current research presented provides a good framework for future investigations.

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Section: • What Advances Does It Highlight?mentioning

confidence: 90%

Section: Physical Differences Contribute To Differences In Thermoregu...mentioning

confidence: 99%

Section: Physical Differences Contribute To Differences In Thermoregu...mentioning

confidence: 99%

See 1 more Smart Citation

Are there sex differences in risk for exertional heat stroke? A translational approach

Giersch

Garcia

Stachenfeld

et al. 2022

Experimental Physiology

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“…Relative to men, V ̇O2max , m b , and sweating rates are typically lower, whereas the A D to m b ratio (A D• m b -1 ) is typically greater, in women. However, at low metabolic rates (≤200 W/m2), heat storage and heat loss may not differ between sexes (14).…”

Section: Introductionmentioning

confidence: 99%

Relatively minor influence of individual characteristics on critical wet-bulb globe temperature (WBGT) limits during light activity in young adults (PSU HEAT Project)

Wolf

Havenith

Kenney

2023

Journal of Applied Physiology

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Critical environmental limits are temperature-humidity thresholds above which heat balance cannot be maintained for a given metabolic heat production. This study examined the association between individual characteristics [sex, body surface area (AD), aerobic capacity (V̇O2max), and body mass (mb)] and critical environmental limits in young adults at low metabolic rates. Forty-four (20 M/24 F; 23±4 yrs) subjects were exposed to progressive heat stress in an environmental chamber at two low net metabolic rates (Mnet); minimal activity (MinAct; Mnet = ~160 W) and light ambulation (LightAmb; Mnet = ~260 W). In 2 hot-dry (HD; ≤25% rh) environments, ambient water vapor pressure (Pa = 12 or 16 mmHg) was held constant and dry-bulb temperature (Tdb) was systematically increased. In 2 warm-humid (WH; ≥50% rh) environments, Tdb was held constant at 34 or 36 °C and Pa was systematically increased. The critical wet-bulb globe temperature (WBGTcrit) was determined for each condition. During MinAct, after entry of Mnet into the forward stepwise linear regression model, no individual characteristics were entered into the model for WH (R2adj = 0.01, p = 0.27) or HD environments (R2adj = -0.01, p = 0.44). During LightAmb, only mb was entered into the model for WH environments (R2adj = 0.44, p < 0.001), whereas only V̇O2max was entered for HD environments (R2adj = 0.22; p = 0.002). These data demonstrate negligible importance of individual characteristics on WBGTcrit during low-intensity non-weight-bearing (MinAct) activity with a modest impact of mb and V̇O2max during weight-bearing (LightAmb) activity in extreme thermal environments.

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Evaluation and improvement of the thermoregulatory system for the two-node bioheat model

Laouadi

Wang

et al. 2021

Energy and Buildings

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Whole-body heat exchange in women during constant- and variable-intensity work in the heat

Cited by 4 publications

References 41 publications

Are there sex differences in risk for exertional heat stroke? A translational approach

Are there sex differences in risk for exertional heat stroke? A translational approach

Relatively minor influence of individual characteristics on critical wet-bulb globe temperature (WBGT) limits during light activity in young adults (PSU HEAT Project)

Evaluation and improvement of the thermoregulatory system for the two-node bioheat model

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