par Poortmans, Jacques 
;Brauman, Henri ;Staroukine, Michel ;Verniory, André ;Decaestecker, Christine ;Leclercq, Raoul
Référence Science & sports, 5, 2, page (103-110)
Publication Publié, 1990
;Brauman, Henri ;Staroukine, Michel ;Verniory, André ;Decaestecker, Christine ;Leclercq, Raoul Référence Science & sports, 5, 2, page (103-110)
Publication Publié, 1990
Article révisé par les pairs
| Résumé : | The increases in plasma renin activity (PRA) and in the plasma concentration in angiotensin II (AII), aldosterone (ALDO), vasopressin (ADH) after exercise were compared to the urine protein excretion of well-hydrated healthy subjects submitted to a 2-min supramaximal bicycle exercise. Venous blood and urine samples were obtained at rest and after exercise. PRA, AII and ALDO were increased to about 4, 2 and 2-fold respectively of the resting basal values. ALDO continued to rise following exercise while PRA and AII returned to resting values (P < 0.05). Urine total protein, albumin and β2-microglobulin (β2-m) increased 7, 38 and 162-fold during the first 20 min postexercise period respectively. The enhanced total protein, albumin and (β2-m) excretion were related to a decrease in plasma volume at 20 min postexercise. A positive relationship (r = 0.515; P < 0.05) after exercise was observed between albumin excretion and PRA. No correlation was noted between the PRA-AII-ALDO system and the β2-m excretion following exercise. It was concluded that: 1) postexercise proteinuria was negatively correlated with the reduction in plasma volume; 2) the PRA-AII-ALDO system does not develop concomitantly with this transient kidney impairment. |
