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Exercise induced sodium conservation: changes in plasma renin and aldosterone.
Med Sci Sports. 1976 Winter; 8(4):209-13.MS

Abstract

Previous studies have demonstrated a renal Na+ conservation during repeated days of exercise in the heat. The present study was intended to describe the role of plasma aldosterone (PAC) in reducing urine Na+ losses during and after 60 min of exercise (60% VO2max) in a warm environment (30 degrees C, 50-53% relative humidity). Additional measurements were made of plasma renin activity (PRA) in an effort to demonstrate the relationship between PRA and PAC. This study shows that a single bout of exercise can significantly reduce urine Na+, Cl-, and H20 excretions for up to 48 hours. Both PRA and PAC were significantly elevated during and immediately after exercise and returned to the pre-exercise level within 6-12 hours of recovery. Subsequently, ingestion of 180 mEq of Na+ each day with ad libitum water intake results in an increased NaCl storage and an expansion of the extracellular volume.

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Authors

Costill DL
No affiliation info available
Branam G
No affiliation info available
Fink W
No affiliation info available
Nelson R
No affiliation info available

MeSH

AdultAldosteroneBlood ProteinsBody WeightChlorineDiuresisHot TemperatureHumansMaleOsmolar ConcentrationPhysical ExertionPlasma VolumePotassiumReninSodiumUrine

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

1011955

Citation

Costill, D L., et al. "Exercise Induced Sodium Conservation: Changes in Plasma Renin and Aldosterone." Medicine and Science in Sports, vol. 8, no. 4, 1976, pp. 209-13.
Costill DL, Branam G, Fink W, et al. Exercise induced sodium conservation: changes in plasma renin and aldosterone. Med Sci Sports. 1976;8(4):209-13.
Costill, D. L., Branam, G., Fink, W., & Nelson, R. (1976). Exercise induced sodium conservation: changes in plasma renin and aldosterone. Medicine and Science in Sports, 8(4), 209-13.
Costill DL, et al. Exercise Induced Sodium Conservation: Changes in Plasma Renin and Aldosterone. Med Sci Sports. 1976;8(4):209-13. PubMed PMID: 1011955.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Exercise induced sodium conservation: changes in plasma renin and aldosterone. AU - Costill,D L, AU - Branam,G, AU - Fink,W, AU - Nelson,R, PY - 1976/1/1/pubmed PY - 1976/1/1/medline PY - 1976/1/1/entrez SP - 209 EP - 13 JF - Medicine and science in sports JO - Med Sci Sports VL - 8 IS - 4 N2 - Previous studies have demonstrated a renal Na+ conservation during repeated days of exercise in the heat. The present study was intended to describe the role of plasma aldosterone (PAC) in reducing urine Na+ losses during and after 60 min of exercise (60% VO2max) in a warm environment (30 degrees C, 50-53% relative humidity). Additional measurements were made of plasma renin activity (PRA) in an effort to demonstrate the relationship between PRA and PAC. This study shows that a single bout of exercise can significantly reduce urine Na+, Cl-, and H20 excretions for up to 48 hours. Both PRA and PAC were significantly elevated during and immediately after exercise and returned to the pre-exercise level within 6-12 hours of recovery. Subsequently, ingestion of 180 mEq of Na+ each day with ad libitum water intake results in an increased NaCl storage and an expansion of the extracellular volume. SN - 0025-7990 UR - https://www.unboundmedicine.com/medline/citation/1011955/Exercise_induced_sodium_conservation:_changes_in_plasma_renin_and_aldosterone_ L2 - https://Insights.ovid.com/pubmed?pmid=1011955 DB - PRIME DP - Unbound Medicine ER -