Change in sympathetic activity, cardiovascular functions and plasma hormone concentrations due to cold water immersion in men
Language English Country Germany Media print
Document type Clinical Trial, Journal Article
PubMed
8891513
DOI
10.1007/bf00376507
Knihovny.cz E-resources
- MeSH
- Acclimatization physiology MeSH
- Aldosterone blood MeSH
- Adult MeSH
- Hemodynamics physiology MeSH
- Hormones blood MeSH
- Catecholamines blood MeSH
- Humans MeSH
- Cold Temperature adverse effects MeSH
- Norepinephrine blood MeSH
- Immersion physiopathology MeSH
- Renin blood MeSH
- Oxygen Consumption physiology MeSH
- Heart Rate physiology MeSH
- Sympathetic Nervous System physiology MeSH
- Physical Fitness MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Male MeSH
- Publication type
- Journal Article MeSH
- Clinical Trial MeSH
- Names of Substances
- Aldosterone MeSH
- Hormones MeSH
- Catecholamines MeSH
- Norepinephrine MeSH
- Renin MeSH
The purpose of this study was to determine whether or not repeated short-term cold water immersions can induce a change in the activity of the sympathetic nervous system and, consequently, in cardiovascular functions in healthy young athletes. Changes in some plasma hormone concentrations were also followed. A single cold water immersion (head-out, at 14 degrees C, for 1 h) increased sympathetic nervous system activity, as evidenced by a four-fold increase (P < 0.05) in plasma noradrenaline concentration. Plasma adrenaline and dopamine concentrations were not increased significantly. Plasma renin-angiotensin activity was reduced by half (P < 0.05) during immersion but plasma aldosterone concentration was unchanged. Stimulation of the sympathetic nervous system during immersion did not induce significant changes in heart rate, but induced peripheral vasoconstriction (as judged from a decrease in skin temperature) and a small increase (by 10%) in systolic and diastolic blood pressures. No clear change in reactivity of the sympathetic nervous system was observed due to repeated cold water immersions (three times a week, for 6 weeks). Neither the plasma renin-angiotensin activity, aldosterone concentration nor cardiovascular parameters were significantly influenced by repeated cold water immersions. A lowered diastolic pressure and an increase in peripheral vasoconstriction were observed after cold acclimation, however. Evidently, the repeated cold stimuli were not sufficient to induce significant adaptational changes in sympathetic activity and hormone production.
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