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Cited by 198Thermoregulation and physiological responsesCardiovascular and exercise physiologyEffects of Environmental Stressors on Livestock

The relative influence of physical fitness, acclimatization state, anthropometric measures and gender on individual reactions to heat stress

Havenith, George, van Middendorp, Henk·1990·European Journal of Applied Physiology and Occupational Physiology
DOI 10.1007/bf00236062
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Abstract

An experiment was set up to quantify the relative influence of fitness, acclimatization, gender and anthropometric measures on physiological responses to heat stress. For this purpose, 12 male and 12 female subjects were exposed to a neutral [ambient temperature (Ta) 21 degrees C, relative humidity (r.h. 50%)], a warm, humid (Ta 34 degrees C, r.h. 80%) and a hot, dry (Ta 45 degrees C, r.h. 20%) climate at rest and at two exercise intensities [25%, and 45% maximal O2 intake (VO2max)], seated seminude in a net chair behind a cycle ergometer. Their physiological responses were recorded and the data submitted to a multiple regression analysis. It was shown that for the variance in heat storage, the percentage of body fat and the surface to mass ratio had relatively the largest influence of all the individual parameters, followed by VO2max and the sweat rate versus increase in core temperature (total r2 = 92%). For the skin temperature variation, the relative influence of individual parameters (sweat gain, VO2max) was small. For body core temperatures, individual parameters had a large influence. The largest effect was due to the percentage of fat and the surface to mass ratio, followed by the sweating setpoint and, finally, VO2max (total r2 = 54%-70%). For the variance in heart rate the VO2max was the most relevant parameter, followed by the setpoint of the sweat rate:rectal temperature relationship (total r2 = 88%). Blood pressure and skin blood flow predictions were also shown to improve by the addition of individual characteristics to the model.(ABSTRACT TRUNCATED AT 250 WORDS)

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  • Without monitoring of workers' physiological response and actual metabolic rate, it is impossible to account for these factors and their impact on workers.

    “Without monitoring of workers’ physiological response and actual metabolic rate, it is impossible to account for these factors and their impact on workers (Havenith and van Middendorp, 1990; Havenith et al., 1998; Havenith et al., 2002).”

    From Assessment of Heat Stress Exposure among Construction Workers in the Hot Desert Climate of Saudi Arabia (2019) · cites this paper as Havenith and van Middendorp, 1990

  • Several earlier physiological researches report higher body temperatures in obese individuals when compared with lean counterparts upon heat exposure and exercise.

    “Several earlier physiological researches report higher body temperatures in obese individuals when compared with lean counterparts upon heat exposure and exercise [69–71].”

    From Drivers of diversity in human thermal perception – A review for holistic comfort models (2018) · cites this paper as [69]

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Authors
Havenith, G., & van Middendorp, H.
Affiliations
Netherlands Organisation for Applied Scientific Research (NL)
ORCID
Havenith, George
Venue
European Journal of Applied Physiology and Occupational Physiology
Publisher
Springer Science and Business Media LLC
Published
1990-12
Volume
61
Issue
5-6
Pages
419-427
ISSN
  • 0020-9376 (ISSN-L)
  • 0301-5548
  • 1439-6327
DOI
10.1007/bf00236062
OpenAlex
W2093685460
Cited by
198
References
30
Citations by year
2026: 2 · 2025: 2 · 2024: 9 · 2023: 6 · 2022: 11 · 2021: 9 · 2020: 12 · 2019: 14 · 2018: 8 · 2017: 5 · 2016: 18 · 2015: 11 · 2014: 11 · 2013: 9 · 2012: 9
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • European Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
Keywords
heat stress, physical fitness, VO2max, acclimatization, anthropometric measures, body fat percentage, surface-to-mass ratio, gender differences, core body temperature, thermal energy storage, heart rate, skin blood flow, blood pressure, exercise in the heat, interindividual variability
MeSH terms
Acclimatization, Adult, Anthropometry, Blood Pressure, Body Temperature Regulation, Exercise Test, Female, Heart Rate, Hot Temperature, Humans, Male, Oxygen Consumption, Physical Fitness, Regional Blood Flow, Regression Analysis, Sex Characteristics, Skin, Sweating

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