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Acute and chronic impact of dynamic exercise on arterial stiffness in older hypertensives.

Aizawa K, Petrella RJ - Open Cardiovasc Med J (2008)

Bottom Line: Regular physical activity has been recommended as an important management component of hypertension.These measurements were repeated following 20 weeks of moderate intensity aerobic exercise training.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.

View Article: PubMed Central - PubMed

Affiliation: Aging, Rehabilitation, & Geriatric Care Research Centre of the Lawson Health Research Institute at Parkwood Hospital; School of Kinesiology, The University of Western Ontario, London, ON, Canada.

ABSTRACT
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.

No MeSH data available.


Related in: MedlinePlus

Arterial distensibility of the carotid (white bars) and brachial (gray bars) arteries following 20 weeks of aerobic exercise training. Data are means ± SE.
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Figure 1: Arterial distensibility of the carotid (white bars) and brachial (gray bars) arteries following 20 weeks of aerobic exercise training. Data are means ± SE.

Mentions: Fig. (1) and (2) show the effect of 20 weeks of aerobic exercise training on the arterial distensibility and β stiffness index of the carotid and brachial arteries, respectively. Neither arterial distensibility nor β stiffness index changed significantly following the 20 weeks of exercise training. DBP and MAP tended to be lower at 8 week and following the completion of exercise training, but these did not reach statistical significance (Table 4; main effect of time, p=0.10). SBP, PP, and HR remained unchanged throughout the study period. Exercise capacity, expressed as VO2max, did not increase following 20 weeks of aerobic exercise training (Table 1).


Acute and chronic impact of dynamic exercise on arterial stiffness in older hypertensives.

Aizawa K, Petrella RJ - Open Cardiovasc Med J (2008)

Arterial distensibility of the carotid (white bars) and brachial (gray bars) arteries following 20 weeks of aerobic exercise training. Data are means ± SE.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2570577&req=5

Figure 1: Arterial distensibility of the carotid (white bars) and brachial (gray bars) arteries following 20 weeks of aerobic exercise training. Data are means ± SE.
Mentions: Fig. (1) and (2) show the effect of 20 weeks of aerobic exercise training on the arterial distensibility and β stiffness index of the carotid and brachial arteries, respectively. Neither arterial distensibility nor β stiffness index changed significantly following the 20 weeks of exercise training. DBP and MAP tended to be lower at 8 week and following the completion of exercise training, but these did not reach statistical significance (Table 4; main effect of time, p=0.10). SBP, PP, and HR remained unchanged throughout the study period. Exercise capacity, expressed as VO2max, did not increase following 20 weeks of aerobic exercise training (Table 1).

Bottom Line: Regular physical activity has been recommended as an important management component of hypertension.These measurements were repeated following 20 weeks of moderate intensity aerobic exercise training.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.

View Article: PubMed Central - PubMed

Affiliation: Aging, Rehabilitation, & Geriatric Care Research Centre of the Lawson Health Research Institute at Parkwood Hospital; School of Kinesiology, The University of Western Ontario, London, ON, Canada.

ABSTRACT
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.

No MeSH data available.


Related in: MedlinePlus