Abstract
OBJECTIVE--To determine whether fluid replacement after exercise induced dehydration varies over the normal menstrual cycle. METHODS--Five subjects, with a regular menstrual cycle lasting 28 (SEM 2) d, were dehydrated by 1.8(0.1)% of their pre-exercise mass by cycle exercise in the heat. Trials were undertaken 2 d before (trial -2) and 5 and 19 d after the onset of menses (trials 6 and 20 respectively). After exercise, subjects ingested a fixed volume, equivalent to 150% of mass loss, of a commercially available sports drink over a 60 min period. RESULTS--Cumulative urine output [median (range)] over the 6 h following ingestion was the same on all trials: 714(469-750) ml on trial -2; 476(433-639) ml on trial 6; 534(195-852) ml on trial 20. There was no menstrual cycle effect on urinary electrolyte (Na+, K+, Cl-) excretion or serum electrolyte (Na+, K+, Cl-) concentrations. Plasma volume increased by 8-12% of the postexercise value following rehydration. The percentage of ingested fluid retained did not differ between trials at any time. Six hours after drink ingestion, net fluid balance was not different from the initial value on any of the trials. CONCLUSIONS--Acute replacement of exercise induced fluid losses is not affected by the normal menstrual cycle.
Full text
PDF






Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bittel J., Henane R. Comparison of thermal exchanges in men and women under neutral and hot conditions. J Physiol. 1975 Sep;250(3):475–489. doi: 10.1113/jphysiol.1975.sp011066. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Coyle E. F., Coggan A. R. Effectiveness of carbohydrate feeding in delaying fatigue during prolonged exercise. Sports Med. 1984 Nov-Dec;1(6):446–458. doi: 10.2165/00007256-198401060-00004. [DOI] [PubMed] [Google Scholar]
- Dill D. B., Costill D. L. Calculation of percentage changes in volumes of blood, plasma, and red cells in dehydration. J Appl Physiol. 1974 Aug;37(2):247–248. doi: 10.1152/jappl.1974.37.2.247. [DOI] [PubMed] [Google Scholar]
- Fong A. K., Kretsch M. J. Changes in dietary intake, urinary nitrogen, and urinary volume across the menstrual cycle. Am J Clin Nutr. 1993 Jan;57(1):43–46. doi: 10.1093/ajcn/57.1.43. [DOI] [PubMed] [Google Scholar]
- Forsling M. L., Akerlund M., Strömberg P. Variations in plasma concentrations of vasopressin during the menstrual cycle. J Endocrinol. 1981 May;89(2):263–266. doi: 10.1677/joe.0.0890263. [DOI] [PubMed] [Google Scholar]
- GREENE R., DALTON K. The premenstrual syndrome. Br Med J. 1953 May 9;1(4818):1007–1014. doi: 10.1136/bmj.1.4818.1007. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hackney A. C. Effects of the menstrual cycle on resting muscle glycogen content. Horm Metab Res. 1990 Dec;22(12):647–647. doi: 10.1055/s-2007-1004994. [DOI] [PubMed] [Google Scholar]
- Harrison M. H. Effects on thermal stress and exercise on blood volume in humans. Physiol Rev. 1985 Jan;65(1):149–209. doi: 10.1152/physrev.1985.65.1.149. [DOI] [PubMed] [Google Scholar]
- Hessemer V., Brück K. Influence of menstrual cycle on shivering, skin blood flow, and sweating responses measured at night. J Appl Physiol (1985) 1985 Dec;59(6):1902–1910. doi: 10.1152/jappl.1985.59.6.1902. [DOI] [PubMed] [Google Scholar]
- Hessemer V., Brück K. Influence of menstrual cycle on thermoregulatory, metabolic, and heart rate responses to exercise at night. J Appl Physiol (1985) 1985 Dec;59(6):1911–1917. doi: 10.1152/jappl.1985.59.6.1911. [DOI] [PubMed] [Google Scholar]
- Kolka M. A., Stephenson L. A. Control of sweating during the human menstrual cycle. Eur J Appl Physiol Occup Physiol. 1989;58(8):890–895. doi: 10.1007/BF02332224. [DOI] [PubMed] [Google Scholar]
- Lamb D. R., Brodowicz G. R. Optimal use of fluids of varying formulations to minimise exercise-induced disturbances in homeostasis. Sports Med. 1986 Jul-Aug;3(4):247–274. doi: 10.2165/00007256-198603040-00003. [DOI] [PubMed] [Google Scholar]
- Maughan R. J. Fluid and electrolyte loss and replacement in exercise. J Sports Sci. 1991 Summer;9(Spec No):117–142. doi: 10.1080/02640419108729870. [DOI] [PubMed] [Google Scholar]
- Maughan R. J., Leiper J. B. Sodium intake and post-exercise rehydration in man. Eur J Appl Physiol Occup Physiol. 1995;71(4):311–319. doi: 10.1007/BF00240410. [DOI] [PubMed] [Google Scholar]
- Nose H., Mack G. W., Shi X. R., Nadel E. R. Involvement of sodium retention hormones during rehydration in humans. J Appl Physiol (1985) 1988 Jul;65(1):332–336. doi: 10.1152/jappl.1988.65.1.332. [DOI] [PubMed] [Google Scholar]
- Nose H., Mack G. W., Shi X. R., Nadel E. R. Shift in body fluid compartments after dehydration in humans. J Appl Physiol (1985) 1988 Jul;65(1):318–324. doi: 10.1152/jappl.1988.65.1.318. [DOI] [PubMed] [Google Scholar]
- Olsson K. E., Saltin B. Variation in total body water with muscle glycogen changes in man. Acta Physiol Scand. 1970 Sep;80(1):11–18. doi: 10.1111/j.1748-1716.1970.tb04764.x. [DOI] [PubMed] [Google Scholar]
- ROTHCHILD I., BARNES A. C. The effects of dosage, and of estrogen, androgen or salicylate administration on the degree of body temperature elevation induced by progesterone. Endocrinology. 1952 Apr;50(4):485–496. doi: 10.1210/endo-50-4-485. [DOI] [PubMed] [Google Scholar]
- Sargent F., 2nd, Weinman K. P. Eccrine sweat gland activity during the menstrual cycle. J Appl Physiol. 1966 Nov;21(6):1685–1687. doi: 10.1152/jappl.1966.21.6.1685. [DOI] [PubMed] [Google Scholar]
- Stephenson L. A., Kolka M. A. Menstrual cycle phase and time of day alter reference signal controlling arm blood flow and sweating. Am J Physiol. 1985 Aug;249(2 Pt 2):R186–R191. doi: 10.1152/ajpregu.1985.249.2.R186. [DOI] [PubMed] [Google Scholar]
- Stephenson L. A., Kolka M. A. Thermoregulation in women. Exerc Sport Sci Rev. 1993;21:231–262. [PubMed] [Google Scholar]
