Key result
Acute maximal dynamic exercise and 20 weeks of moderate intensity aerobic exercise training failed to modify arterial stiffness of the carotid and brachial arteries in older hypertensives.
Why the study?
Does acute maximal dynamic exercise and 20 weeks of aerobic exercise training improve arterial stiffness in older hypertensives?
Does acute maximal dynamic exercise and 20 weeks of aerobic exercise training improve arterial stiffness in older hypertensives?
Neither acute maximal dynamic exercise nor 20 weeks of moderate intensity aerobic exercise training modified arterial stiffness in older treated hypertensives.
Exercise failed to modify arterial stiffness; leaves open whether alternative regimens benefit vascular outcomes in older hypertensives.
Arterial stiffness increases with ageing and hypertension. Regular physical activity has been recommended as an important management component of hypertension. The purpose of this study was to examine the acute impact of maximal dynamic exercise and the effect of 20 weeks of aerobic exercise on arterial stiffness of the carotid and brachial arteries in older hypertensives. Nine previously sedentary and treated older hypertensives (2 men and 7 women, age 68.2 +/- 5.4 yrs) performed maximal treadmill exercise to volitional fatigue while arterial stiffness indices (arterial distensibility and beta stiffness index) were measured prior to, immediately (about 10 min) following, and 24 h following maximal exercise. These measurements were repeated following 20 weeks of moderate intensity aerobic exercise training. Maximal exercise had no impact on arterial stiffness indices immediately and 24 h following exercise intervention. Following 20 weeks of training, arterial stiffness indices remained unchanged at rest and following maximal exercise. These data show that, in older hypertensives, 1) acute maximal dynamic exercise had no impact on arterial stiffness of the carotid and brachial arteries, and 2) 20 weeks of moderate intensity aerobic exercise training failed to modify arterial stiffness.
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Aizawa et al. (2008) studied Hypertension (n=9). Maximal dynamic exercise and moderate intensity aerobic exercise training vs. Baseline was evaluated on Arterial stiffness indices (arterial distensibility and beta stiffness index) of the carotid and brachial arteries. Acute maximal dynamic exercise and 20 weeks of moderate intensity aerobic exercise training failed to modify arterial stiffness of the carotid and brachial arteries in older hypertensives.
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