Abstract
Although aerobic exercise training has been shown to lower blood pressure (BP) in older adults, its effect on BP sensitivity to dietary sodium (Na+) is unknown. Therefore, the present study was undertaken to examine the effect of aerobic exercise training on BP sensitivity to dietary Na+ in older hypertensive individuals. Blood pressure was measured after 8 days of low (20?mEq) and high (200?mEq) Na+ diets in 31 older (63±7 years, mean±standard deviation), hypertensive (152±11/88±5?mm Hg) individuals at baseline and following 6 months of aerobic exercise training (at 75% VO2max, 3 times/week, 40?min/session). Subjects were grouped on the basis of the difference in mean arterial BP (MAP) between diets (Na+ sensitive: ⩾5?mm Hg increase in MAP on high Na+, n=20; Na+ resistant: <5?mm Hg increase in MAP on the high Na+ diet, n=11). Following 6 months of aerobic exercise training, there was a significant increase in maximal aerobic capacity (VO2max: 18.3±3.8 vs 20.7±4.2?ml/kg/min, P<0.017). Aerobic exercise training had a significant (P=0.02) effect on Na+ sensitivity status, with the proportion of Na+-resistant individuals increasing from 35% at baseline to 61% following the 6-month aerobic exercise training programme. This study demonstrates the importance of physical activity on BP sensitivity to dietary Na+.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 digital issues and online access to articles
$119.00 per year
only $9.92 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Midgley JP, Matthew AG, Greenwood CM, Logan AG . Effect of reduced dietary sodium on blood pressure. A meta-analysis of randomized controlled trials. JAMA 1996; 275: 1590–1597.
Luft FC, Fineberg NS, Miller JZ, Rankin LI, Grim CE, Weinberger MH . The effects of age, race and heredity on glomerular filtration rate in normal man. Am J Med Sci 1980; 279: 15–24.
Weinberger MH, Fineberg NS . Sodium and volume sensitivity of blood pressure: age and pressure changes over time. Hypertension 1991; 18: 67–71.
Logan AG . Sodium sensitivity, not level of salt intake, predicts salt effects. Curr Hypertens Rep 2000; 2: 115–119.
Hagberg JM, Montain SJ, Martin WH, Ehsani AA . Effect of exercise training on 60–69 year old persons with essential hypertension. Am J Cardiol 1989; 64: 348–353.
Carroll JF, Convertino VA, Wood CE, Graves JE, Lowenthal DT, Pollock ML . Effect of training on blood volume and plasma hormone concentrations in the elderly. Med Sci Sports Exerc 1995; 27: 79–84.
Kohno K, Matsuoka H, Takenaka K, Miyake Y, Nomura G, Imaizumi T . Renal depressor mechanisms of physical training in patients with essential hypertension. Am J Hypertens 1997; 10: 859–868.
Dengel DR, Galecki AT, Hagberg JM, Pratley RE . The independent and combined effects of weight loss and aerobic exercise on blood pressure and oral glucose tolerance in older men. Am J Hypertens 1998; 11: 1405–1412.
American Diabetes Association. Report of the expert committee on the diagnosis and classification of diabetes mellitus. Diabetes Care 1997; 20: 1183–1197.
Skrabal F, Aubock J, Hortnagl H, Braunsteiner H . Effect of moderate sodium restriction and increase in potassium on the pressor hormones response to noradrenaline and baroreceptor function in man. Clin Sci 1980; 59: 1575–1605.
Ruppert M, Diehl J, Kolloch R, Overlack A, Kraft K, Gobel B et al. Short-term dietary sodium restriction increases serum lipids and insulin in salt-sensitive and salt-resistant normotensive adults. Klin Wochenschr 1991; 69 (Suppl 25): 51–57.
Dengel DR, Hogikyan RV, Brown MD, Glickman SG, Supiano MA . Insulin sensitivity is associated with blood pressure response to sodium in older hypertensives. Am J Physiol 1998; 274: E403–E409.
Guyton AC . Textbook of Medical Physiology, 6th edn. WB Saunders Company: Philadelphia, PA, 1981, p 417.
Dengel DR, Pratley RE, Hagberg JM, Rogus EM, Goldberg AP . Distinct effects of aerobic exercise training and weight loss on glucose homeostasis in obese sedentary men. J Appl Physiol 1996; 81: 318–325.
Thompson GD, Bond V, Cohen BS, Tulley R, West DB . Race and physical activity: cardiovascular and renal responses to sodium loading. Ethnic Dis 1996; 6: 255–263.
Bigazzi R, Bianchi S, Baldari D, Sgherri G, Baldari G, Campese VM . Microalbuminuria in salt-sensitive patients: a marker for renal and cardiovascular risk factors. Hypertension 1994; 23: 195–199.
Schmieder RE, Messerli FH, Garavaglia GE, Nunez BD . Dietary salt intake. A determinant of cardiac involvement in essential hypertension. Circulation 1988; 78: 951–956.
Weir MR, Dengel DR, Behrens MT, Goldberg AP . Salt-induced increases in systolic blood pressure affect renal hemodynamics and proteinuria. Hypertension 1995; 25: 1339–1344.
Heimann JC, Drumond S, Alves AT, Barbato AJ, Dichtchekenian V, Marcondes M . Left ventricular hypertrophy is more marked in salt-sensitive than in salt-resistant hypertensive patients. J Cardiovasc Pharmacol 1991; 17 (Suppl 2): S122–S124.
Bigazzi R, Bianchi S, Baldari G, Campese VM . Clustering of cardiovascular risk factors in salt-sensitive patients with essential hypertension: role of insulin. Am J Hypertens 1996; 9: 24–31.
Morimoto A, Uzu T, Fujii T, Nishimura M, Kuroda S, Nakamura S et al. Sodium sensitivity and cardiovascular events in patients with essential hypertension. Lancet 1997; 350: 1734–1737.
Weinberger MH, Fineberg NS, Fineberg E, Weinberger M . Salt sensitivity, pulse pressure, and death in normal and hypertensive humans. Hypertension 2001; 37: 429–432.
Hespel P, Lijnen P, Van Hoof R, Fagard R, Goossens W, Lissens W et al. Effects of physical endurance training on the plasma renin-angiotensin–aldoserone system in normal man. J Endocr 1988; 116: 443–449.
Tharp GD, Buuck RJ . Adrenal adaptation to chronic exercise. J Appl Physiol 1974; 50: 709–712.
Acknowledgements
We thank all the subjects who volunteered and the nursing and dietary staffs at the University of Michigan General Clinical Research Center for their assistance with the research studies, and Marla Smith for her technical assistance. This work was supported by National Institutes of Health Research Scientist Development Award in Aging KO1 AG0072301 (DRD), Department of Veterans Affairs Medical Research Service (MAS) and Geriatric Research, Education and Clinical Center (DRD, MAS) at Ann Arbor, University of Michigan, Claude D Pepper Older Americans Independence Center (AG-08808) and University of Michigan Clinical Research Center (RR-00042).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Dengel, D., Brown, M., Reynolds, T. et al. Effect of aerobic exercise training on blood pressure sensitivity to dietary sodium in older hypertensives. J Hum Hypertens 20, 372–378 (2006). https://doi.org/10.1038/sj.jhh.1001989
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.jhh.1001989
Keywords
This article is cited by
-
Salty Subjects: Unpacking Racial Differences in Salt-Sensitive Hypertension
Current Hypertension Reports (2024)
-
An ethnic-sensitive approach for the promotion of a healthy lifestyle: is it warranted?
Journal of Human Hypertension (2008)