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Does heat acclimation lower the rate of metabolism elicited by muscular exercise?
Aviat Space Environ Med. 1983 Jan; 54(1):27-31.AS

Abstract

Heat acclimation has been suggested to either lower or have no effect on the rate of metabolism (M) elicited by muscular exercise. The purpose of the present investigation (Study I) was to examine the effect heat acclimation has on the M (W . kg-1 or VO2 in ml . kg-1 . min-1) elicited by muscular exercise. Two additional investigations were evaluated to determine if season (summer or winter) of year (Study II) and subject gender (Study III) further influence the effect heat acclimation has on M during exercise. Volunteers for Study I (n = 15 men), II (n = 8 men), and III (n = 10 men and 9 women) completed standardized treadmill walks in hot (40 degrees C, 30% rh or 49 degrees C, 20% rh) and cool (20 degrees C, 40% rh) environments immediately before and after heat acclimation. After heat acclimation, a lower M was observed for Study I (-4%; p less than 0.05), II (-2%; N.S.) and III (-3%; p = 0.06) in the hot environments. In addition, after heat acclimation a lower M was observed for Study I (-3%; p = 0.08), II (-5%; p less than 0.05) and III (-6%; p less than 0.05) in the cool environment. Season of year and subject gender did not have a significant effect on these results. These data indicate that heat acclimation does lower the M elicited by exercise. The observed percent decrease was lower in the hot (-3%) than cool (-5%) test environments.

Authors

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Pub Type(s)

Journal Article

Language

eng

PubMed ID

6830554

Citation

Sawka, M N., et al. "Does Heat Acclimation Lower the Rate of Metabolism Elicited By Muscular Exercise?" Aviation, Space, and Environmental Medicine, vol. 54, no. 1, 1983, pp. 27-31.
Sawka MN, Pandolf KB, Avellini BA, et al. Does heat acclimation lower the rate of metabolism elicited by muscular exercise? Aviat Space Environ Med. 1983;54(1):27-31.
Sawka, M. N., Pandolf, K. B., Avellini, B. A., & Shapiro, Y. (1983). Does heat acclimation lower the rate of metabolism elicited by muscular exercise? Aviation, Space, and Environmental Medicine, 54(1), 27-31.
Sawka MN, et al. Does Heat Acclimation Lower the Rate of Metabolism Elicited By Muscular Exercise. Aviat Space Environ Med. 1983;54(1):27-31. PubMed PMID: 6830554.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does heat acclimation lower the rate of metabolism elicited by muscular exercise? AU - Sawka,M N, AU - Pandolf,K B, AU - Avellini,B A, AU - Shapiro,Y, PY - 1983/1/1/pubmed PY - 1983/1/1/medline PY - 1983/1/1/entrez SP - 27 EP - 31 JF - Aviation, space, and environmental medicine JO - Aviat Space Environ Med VL - 54 IS - 1 N2 - Heat acclimation has been suggested to either lower or have no effect on the rate of metabolism (M) elicited by muscular exercise. The purpose of the present investigation (Study I) was to examine the effect heat acclimation has on the M (W . kg-1 or VO2 in ml . kg-1 . min-1) elicited by muscular exercise. Two additional investigations were evaluated to determine if season (summer or winter) of year (Study II) and subject gender (Study III) further influence the effect heat acclimation has on M during exercise. Volunteers for Study I (n = 15 men), II (n = 8 men), and III (n = 10 men and 9 women) completed standardized treadmill walks in hot (40 degrees C, 30% rh or 49 degrees C, 20% rh) and cool (20 degrees C, 40% rh) environments immediately before and after heat acclimation. After heat acclimation, a lower M was observed for Study I (-4%; p less than 0.05), II (-2%; N.S.) and III (-3%; p = 0.06) in the hot environments. In addition, after heat acclimation a lower M was observed for Study I (-3%; p = 0.08), II (-5%; p less than 0.05) and III (-6%; p less than 0.05) in the cool environment. Season of year and subject gender did not have a significant effect on these results. These data indicate that heat acclimation does lower the M elicited by exercise. The observed percent decrease was lower in the hot (-3%) than cool (-5%) test environments. SN - 0095-6562 UR - https://www.unboundmedicine.com/medline/citation/6830554/Does_heat_acclimation_lower_the_rate_of_metabolism_elicited_by_muscular_exercise DB - PRIME DP - Unbound Medicine ER -