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The effects of heat acclimation on plasma volume and plasma protein of females.
Int J Sports Med. 1983 Feb; 4(1):40-4.IJ

Abstract

Four females were studied during a 10-day heat acclimation regimen consisting of 2 h per day of stationary cycle riding (means = 46% VO2 max) in a hot environment (40 degrees C, 50% RH) to determine the effects of heat acclimation on changes in plasma volume and vascular protein both at rest and during exercise. Changes in plasma volume were calculated from hematocrit and hemoglobin measurements. Plasma volume decreased during each 2-h session on baseline days through heat day 6 (-4.9% to -1.2%). On heat days 8 and 10, there was an expansion of plasma volume during the session (1.4% and 0.8%). This hemodilution was significantly different (P less than 0.05) from the hemoconcentration on baseline through heat day 4. The gain of protein during the 2-h session was not significantly different on any of the heat days from that on baseline days. With acclimation of females to work in the heat, there is an increased ability to maintain the fluid of the vascular compartment during a 2-h exercise session in the heat.

Authors

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Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

6840937

Citation

O'Toole, M L., et al. "The Effects of Heat Acclimation On Plasma Volume and Plasma Protein of Females." International Journal of Sports Medicine, vol. 4, no. 1, 1983, pp. 40-4.
O'Toole ML, Paolone AM, Ramsey RE, et al. The effects of heat acclimation on plasma volume and plasma protein of females. Int J Sports Med. 1983;4(1):40-4.
O'Toole, M. L., Paolone, A. M., Ramsey, R. E., & Irion, G. (1983). The effects of heat acclimation on plasma volume and plasma protein of females. International Journal of Sports Medicine, 4(1), 40-4.
O'Toole ML, et al. The Effects of Heat Acclimation On Plasma Volume and Plasma Protein of Females. Int J Sports Med. 1983;4(1):40-4. PubMed PMID: 6840937.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of heat acclimation on plasma volume and plasma protein of females. AU - O'Toole,M L, AU - Paolone,A M, AU - Ramsey,R E, AU - Irion,G, PY - 1983/2/1/pubmed PY - 1983/2/1/medline PY - 1983/2/1/entrez SP - 40 EP - 4 JF - International journal of sports medicine JO - Int J Sports Med VL - 4 IS - 1 N2 - Four females were studied during a 10-day heat acclimation regimen consisting of 2 h per day of stationary cycle riding (means = 46% VO2 max) in a hot environment (40 degrees C, 50% RH) to determine the effects of heat acclimation on changes in plasma volume and vascular protein both at rest and during exercise. Changes in plasma volume were calculated from hematocrit and hemoglobin measurements. Plasma volume decreased during each 2-h session on baseline days through heat day 6 (-4.9% to -1.2%). On heat days 8 and 10, there was an expansion of plasma volume during the session (1.4% and 0.8%). This hemodilution was significantly different (P less than 0.05) from the hemoconcentration on baseline through heat day 4. The gain of protein during the 2-h session was not significantly different on any of the heat days from that on baseline days. With acclimation of females to work in the heat, there is an increased ability to maintain the fluid of the vascular compartment during a 2-h exercise session in the heat. SN - 0172-4622 UR - https://www.unboundmedicine.com/medline/citation/6840937/The_effects_of_heat_acclimation_on_plasma_volume_and_plasma_protein_of_females_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2008-1026014 DB - PRIME DP - Unbound Medicine ER -