دورية أكاديمية
Potassium and catecholamine concentrations in the immediate post exercise period.
| العنوان: | Potassium and catecholamine concentrations in the immediate post exercise period. |
|---|---|
| المؤلفون: | Young DB; Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson 39216-4505., Srivastava TN, Fitzovich DE, Kivlighn SD, Hamaguchi M |
| المصدر: | The American journal of the medical sciences [Am J Med Sci] 1992 Sep; Vol. 304 (3), pp. 150-3. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: United States NLM ID: 0370506 Publication Model: Print Cited Medium: Print ISSN: 0002-9629 (Print) Linking ISSN: 00029629 NLM ISO Abbreviation: Am J Med Sci Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2016- : New York : Elsevier Original Publication: Philadelphia : J. B. Lippincott |
| مواضيع طبية MeSH: | Exercise* , Heart Rate*, Epinephrine/*blood , Norepinephrine/*blood , Potassium/*blood, Adult ; Humans ; Hydrogen-Ion Concentration ; Male ; Physical Exertion ; Reference Values ; Time Factors |
| مستخلص: | The minutes immediately after cessation of strenuous exercise have been termed the "vulnerable period" regarding the occurrence of lethal cardiac arrhythmias. In the present study, we analyzed the rates of change with a high degree of temporal resolution of factors known to be associated with induction of arrhythmic activity. Thirteen subjects walked and ran on a treadmill to the point of exhaustion after a modified Bruce protocol. Samples were drawn from the antecubital vein immediately before exercise, at the moment exercise stopped, and at 1, 2, 3, 5, and 10 minutes of recovery. Plasma potassium concentration rose during exercise from 3.98 +/- .05 to 5.09 +/- .09 mEq/L. After the exercise period, plasma potassium fell rapidly. The mean maximum rate of change was -0.54 +/- .04 mEq/L/min, and -0.88 +/- .08 mEq/L/2 min. Plasma epinephrine concentration increased from 63 +/- 14 to 497 +/- 41 pg/ml and norepinephrine increased from 503 +/- 57 to 2800 +/- 519 pg/ml during exercise. During the first minute after cessation of exercise, the concentrations of both catecholamines increased still further. We propose that the rapid decline of potassium concentration while catecholamine levels are elevated to near maximal levels may contribute to the vulnerability of some individuals to post exercise arrhythmias. |
| معلومات مُعتمدة: | HL21435 United States HL NHLBI NIH HHS |
| المشرفين على المادة: | RWP5GA015D (Potassium) X4W3ENH1CV (Norepinephrine) YKH834O4BH (Epinephrine) |
| تواريخ الأحداث: | Date Created: 19920901 Date Completed: 19930202 Latest Revision: 20190716 |
| رمز التحديث: | 20240627 |
| DOI: | 10.1097/00000441-199209000-00002 |
| PMID: | 1476154 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0002-9629 |
|---|---|
| DOI: | 10.1097/00000441-199209000-00002 |