Responses of plasma human atrial natriuretic factor to high intensity submaximal exercise in the heat

William J. Kraemer; Lawrence E. Armstrong; Roger W. Hubbard; Louis J. Marchitelli; Natalie Leva; Paul B. Rock; Joseph E. Dziados

doi:10.1007/BF00417983

Responses of plasma human atrial natriuretic factor to high intensity submaximal exercise in the heat

William J. Kraemer, Lawrence E. Armstrong, Roger W. Hubbard, Louis J. Marchitelli, Natalie Leva, Paul B. Rock, Joseph E. Dziados

Center for Aerospace and Hyperbaric Medicine

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

No data exists regarding responses of human atrial natriuretic factor (ANF) to exercise in the heat. The purpose of this study was to examine the responses of plasma ANF to high intensity submaximal (71%±0.9 {Mathematical expression}) exercise in the heat over an eight day acclimation period. Fourteen healthy males volunteered to participate in the study. Subjects performed intermittent exercises on a treadmill (0% grade) during 50 min of each 100 min trial in an environmental chamber maintained at 41.2±0.5° C, 39.0±1.7% relative humidity. Blood was obtained from an antecubital vein after standing 20 min in the heat prior to exercise, and immediately after exercise. Measures were compared on days 1, 4 and 8. ANF did not change pre- to post-exercise nor did it change over the eight day heat acclimation period despite other heat acclimation adaptations. Conversely, plasma aldosterone (ALDO), renin activity (PRA) and cortisol (COR) all increased (p<0.05) pre- to post-exercise on each day but again no changes were observed over the eight day period. These data support that ANF may not increase when ALDO and PRA increases are observed.

Original language	English
Pages (from-to)	399-403
Number of pages	5
Journal	European Journal of Applied Physiology and Occupational Physiology
Volume	57
Issue number	4
DOIs	https://doi.org/10.1007/BF00417983
State	Published - Mar 1988

Keywords

Aldosterone
Atrial natriuretic factor
Cortisol
Heat
Males
Plasma renin activity

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title = "Responses of plasma human atrial natriuretic factor to high intensity submaximal exercise in the heat",

abstract = "No data exists regarding responses of human atrial natriuretic factor (ANF) to exercise in the heat. The purpose of this study was to examine the responses of plasma ANF to high intensity submaximal (71%±0.9 {Mathematical expression}) exercise in the heat over an eight day acclimation period. Fourteen healthy males volunteered to participate in the study. Subjects performed intermittent exercises on a treadmill (0% grade) during 50 min of each 100 min trial in an environmental chamber maintained at 41.2±0.5° C, 39.0±1.7% relative humidity. Blood was obtained from an antecubital vein after standing 20 min in the heat prior to exercise, and immediately after exercise. Measures were compared on days 1, 4 and 8. ANF did not change pre- to post-exercise nor did it change over the eight day heat acclimation period despite other heat acclimation adaptations. Conversely, plasma aldosterone (ALDO), renin activity (PRA) and cortisol (COR) all increased (p<0.05) pre- to post-exercise on each day but again no changes were observed over the eight day period. These data support that ANF may not increase when ALDO and PRA increases are observed.",

keywords = "Aldosterone, Atrial natriuretic factor, Cortisol, Heat, Males, Plasma renin activity",

author = "Kraemer, {William J.} and Armstrong, {Lawrence E.} and Hubbard, {Roger W.} and Marchitelli, {Louis J.} and Natalie Leva and Rock, {Paul B.} and Dziados, {Joseph E.}",

year = "1988",

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AU - Leva, Natalie

AU - Rock, Paul B.

AU - Dziados, Joseph E.

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N2 - No data exists regarding responses of human atrial natriuretic factor (ANF) to exercise in the heat. The purpose of this study was to examine the responses of plasma ANF to high intensity submaximal (71%±0.9 {Mathematical expression}) exercise in the heat over an eight day acclimation period. Fourteen healthy males volunteered to participate in the study. Subjects performed intermittent exercises on a treadmill (0% grade) during 50 min of each 100 min trial in an environmental chamber maintained at 41.2±0.5° C, 39.0±1.7% relative humidity. Blood was obtained from an antecubital vein after standing 20 min in the heat prior to exercise, and immediately after exercise. Measures were compared on days 1, 4 and 8. ANF did not change pre- to post-exercise nor did it change over the eight day heat acclimation period despite other heat acclimation adaptations. Conversely, plasma aldosterone (ALDO), renin activity (PRA) and cortisol (COR) all increased (p<0.05) pre- to post-exercise on each day but again no changes were observed over the eight day period. These data support that ANF may not increase when ALDO and PRA increases are observed.

AB - No data exists regarding responses of human atrial natriuretic factor (ANF) to exercise in the heat. The purpose of this study was to examine the responses of plasma ANF to high intensity submaximal (71%±0.9 {Mathematical expression}) exercise in the heat over an eight day acclimation period. Fourteen healthy males volunteered to participate in the study. Subjects performed intermittent exercises on a treadmill (0% grade) during 50 min of each 100 min trial in an environmental chamber maintained at 41.2±0.5° C, 39.0±1.7% relative humidity. Blood was obtained from an antecubital vein after standing 20 min in the heat prior to exercise, and immediately after exercise. Measures were compared on days 1, 4 and 8. ANF did not change pre- to post-exercise nor did it change over the eight day heat acclimation period despite other heat acclimation adaptations. Conversely, plasma aldosterone (ALDO), renin activity (PRA) and cortisol (COR) all increased (p<0.05) pre- to post-exercise on each day but again no changes were observed over the eight day period. These data support that ANF may not increase when ALDO and PRA increases are observed.

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Responses of plasma human atrial natriuretic factor to high intensity submaximal exercise in the heat

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Keywords

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