Lack of age-associated elevations in 24-h systolic and pulse pressures in women who exercise regularly
| Autor: | Hirofumi Tanaka, Christopher A. DeSouza, Douglas R. Seals, Pamela P. Jones, E. T. Stevenson, M J Reiling |
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| Rok vydání: | 1999 |
| Předmět: |
Adult
Aging medicine.medical_specialty Physiology Hemodynamics Blood Pressure Physical exercise Endurance training Physiology (medical) Internal medicine medicine Humans Exercise Pulse (signal processing) business.industry Middle Aged medicine.disease Postmenopause medicine.anatomical_structure Endocrinology Blood pressure Premenopause Ambulatory Arterial stiffness Female Cardiology and Cardiovascular Medicine business Artery |
| Zdroj: | American Journal of Physiology-Heart and Circulatory Physiology. 277:H947-H955 |
| ISSN: | 1522-1539 0363-6135 |
| DOI: | 10.1152/ajpheart.1999.277.3.h947 |
| Popis: | We tested the hypothesis that the elevations in 24-h arterial systolic (SBP) and pulse (PP) pressures with age in sedentary adult females are absent or smaller in women who exercise regularly. Four groups of healthy normotensive women were studied: premenopausal ( n = 12; 29 ± 1 yr, mean ± SE) and postmenopausal ( n = 20; 62 ± 1) sedentary, and premenopausal ( n = 14; 30 ± 1) and postmenopausal ( n= 12; 58 ± 1) endurance-exercise trained (distance runners). In the sedentary group, 24-h SBP and PP (Spacelabs ambulatory monitor 90207) were ∼10 mmHg higher ( P < 0.05) in the postmenopausal women than in the premenopausal controls; this was because of higher daytime and nighttime SBP and PP levels in the postmenopausal women. In contrast, 24-h, daytime and nighttime SBP and PP were not different with age in the endurance-trained women. SBP variability and SBP load (% of all recordings > 140 mmHg) generally were greater with age in the sedentary women (e.g., SBP load = 14 ± 4 vs. 3 ± 1%, P < 0.05) but not in the endurance-trained women. In the pooled population, 24-h SBP and PP were related to waist-to-hip ratio (measure of abdominal adiposity) ( r = 0.48 and 0.49, respectively, P < 0.001) and carotid augmentation index (measure of arterial stiffness) ( r = 0.43 and 0.53, P < 0.005). In the sedentary women, accounting for the influence of either of these factors eliminated the significant age-associated differences in 24-h SBP and PP ( P > 0.3). Our results suggest that the elevations in 24-h SBP and PP with age in sedentary adult females may not occur in women who regularly perform endurance exercise. This appears to be related to the absence of age-associated increases in abdominal adiposity and arterial stiffness in the exercising women. |
| Databáze: | OpenAIRE |
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