BACKGROUND: Previous studies examining the relationship between exercise dose and post-exercise hypotension (PEH) have employed a limited range of exercise duration and subject age. We extended the dose-response curve by studying two intensities of prolonged exercise that may produce a greater magnitude of PEH and reveal age differences in the exercise dose-response relationship for PEH. METHODS:Two groups of healthy recreational endurance athletes were studied: Young (n = 17; age 28 ± 1.1 years) and middle-aged participants (n = 18; 52 ± 0.90 years). They performed on separate occasions, 120 min of prolonged exercise (running) at moderate (60% VO2max) and high intensities (80% VO2max). RESULTS:PEH after 1 hour of recovery was similar within each age group for either exercise intensity, but was significantly greater in the middle-aged group (moderate intensity, -12.3 ± 1.6 mmHg; high intensity, -15.1 ± 1.7 mmHg) compared with the young group (moderate intensity, -1.2 ± 1.7 mmHg; high intensity, -5.7 ± 2.5 mmHg; p < 0.05). Stepwise regression showed that baseline blood pressure but not age was significantly related to the degree of PEH. Thus, the greater PEH seen in the middle-aged group is attributed to their higher baseline blood pressure (124 ± 3.0/79 ± 2.0 mmHg) than the young group (111 ± 2.0/69 ± 1.8 mmHg). A reduced total peripheral resistance following exercise was the primary contributor to PEH across both age groups and exercise intensities. CONCLUSIONS: We conclude that prolonged exercise induces a significant PEH regardless of exercise intensity.
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BACKGROUND: Previous studies examining the relationship between exercise dose and post-exercise hypotension (PEH) have employed a limited range of exercise duration and subject age. We extended the dose-response curve by studying two intensities of prolonged exercise that may produce a greater magnitude of PEH and reveal age differences in the exercise dose-response relationship for PEH. METHODS: Two groups of healthy recreational endurance athletes were studied: Young (n = 17; age 28 ± 1.1 years) and middle-aged participants (n = 18; 52 ± 0.90 years). They performed on separate occasions, 120 min of prolonged exercise (running) at moderate (60% VO2max) and high intensities (80% VO2max). RESULTS: PEH after 1 hour of recovery was similar within each age group for either exercise intensity, but was significantly greater in the middle-aged group (moderate intensity, -12.3 ± 1.6 mmHg; high intensity, -15.1 ± 1.7 mmHg) compared with the young group (moderate intensity, -1.2 ± 1.7 mmHg; high intensity, -5.7 ± 2.5 mmHg; p < 0.05). Stepwise regression showed that baseline blood pressure but not age was significantly related to the degree of PEH. Thus, the greater PEH seen in the middle-aged group is attributed to their higher baseline blood pressure (124 ± 3.0/79 ± 2.0 mmHg) than the young group (111 ± 2.0/69 ± 1.8 mmHg). A reduced total peripheral resistance following exercise was the primary contributor to PEH across both age groups and exercise intensities. CONCLUSIONS: We conclude that prolonged exercise induces a significant PEH regardless of exercise intensity.
Authors: Oscar Niño; Natalia Balagué; Daniel Aragonés; Juan Alamo; Guillermo Oviedo; Casimiro Javierre; Elisabet Guillamo; Maria C Delicado; Gines Viscor; Josep L Ventura Journal: Eur J Appl Physiol Date: 2017-09-13 Impact factor: 3.078
Authors: Huimin Yan; Michael A Behun; Marc D Cook; Sushant M Ranadive; Abbi D Lane-Cordova; Rebecca M Kappus; Jeffrey A Woods; Kenneth R Wilund; Tracy Baynard; John R Halliwill; Bo Fernhall Journal: PLoS One Date: 2016-04-13 Impact factor: 3.240