scholarly journals Aerobic Exercise Training with Brisk Walking Increases Intestinal Bacteroides in Healthy Elderly Women

Nutrients ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 868 ◽  
Author(s):  
Morita ◽  
Yokoyama ◽  
Imai ◽  
Takeda ◽  
Ota ◽  
...  
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Cardiorespiratory Fitness ◽  
Intestinal Microbiota ◽  
Exercise Intervention ◽  
Elderly Women ◽  
Trunk Muscle ◽  
Aerobic Exercise Training ◽  
Brisk Walking ◽  
Healthy Elderly

This study examined the effect of an exercise intervention on the composition of the intestinal microbiota in healthy elderly women. Thirty-two sedentary women that were aged 65 years and older participated in a 12-week, non-randomized comparative trial. The subjects were allocated to two groups receiving different exercise interventions, trunk muscle training (TM), or aerobic exercise training (AE). AE included brisk walking, i.e., at an intensity of ≥ 3 metabolic equivalents (METs). The composition of the intestinal microbiota in fecal samples was determined before and after the training period. We also assessed the daily physical activity using an accelerometer, trunk muscle strength by the modified Kraus–Weber (K-W) test, and cardiorespiratory fitness by a 6-min. walk test (6MWT). K-W test scores and distance achieved during the 6MWT (6MWD) improved in both groups. The relative abundance of intestinal Bacteroides only significantly increased in the AE group, particularly in subjects showing increases in the time spent in brisk walking. Overall, the increases in intestinal Bacteroides following the exercise intervention were associated with increases in 6MWD. In conclusion, aerobic exercise training that targets an increase of the time spent in brisk walking may increase intestinal Bacteroides in association with improved cardiorespiratory fitness in healthy elderly women.

Abstract P095: Aerobic Exercise Training Reduces Endothelin-1-mediated Vasoconstriction In Postmenopausal Women

Hypertension ◽  
2020 ◽  
Vol 76 (Suppl_1) ◽  
Author(s):  
Megan M Wenner ◽  
Caitlin Dow ◽  
Jared Greiner ◽  
Brian Stauffer ◽  
Christopher Desouza
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Postmenopausal Women ◽  
Exercise Intervention ◽  
Aerobic Exercise Training ◽  
Receptor Blockade ◽  
Maximal Heart Rate ◽  
Endothelin 1 ◽  
Vasodilator Response ◽  
Exercise Induced

Endothelin-1 (ET-1)-mediated vasoconstrictor tone is elevated in postmenopausal women (PMW), contributing to their increased cardiovascular risk. Although aerobic exercise is beneficial in reducing ET-1 system activity in men, it is unknown whether this favorable vascular effect is conferred in women. In fact, contrary to men, it is uncertain whether aerobic exercise training improves endothelial dysfunction in PMW. We tested the hypothesis that aerobic exercise training reduces ET-1-mediated vasoconstriction in PMW. We further hypothesized reductions in ET-1 vasoconstrictor tone underly exercise-induced improvements in endothelium-dependent vasodilatation in PMW. Methods: Forearm blood flow (FBF) responses to intra-arterial infusion of selective ET A receptor blockade (BQ-123, 100 nmol/min for 60 min), acetylcholine (4.0, 8.0 and 16.0 μg/100 mL tissue/min) in the absence and presence of ET A receptor blockade and sodium nitroprusside (1.0, 2.0 and 4.0 μg/100 mL tissue/min) were determined before and after a 12-week aerobic exercise training intervention in 20 healthy, sedentary PMW (56 + 1 yr). Results: All 20 PMW completed the exercise intervention, walking an average of 4.9 + 0.1 d/wk for 50 + 2 min/d at 71 + 1% of maximal heart rate. After the exercise intervention, BQ-123 elicited no significant change in resting FBF in the previously sedentary PMW compared with significant vasodilation (~25%) before exercise. FBF responses to acetylcholine were markedly higher (~25%; P<0.05) after (from 4.3 + 0.3 to 13.8 + 0.8 mL/100 ml tissue/min) vs before (from 4.1 + 0.2 to 11.3 + 0.8 mL/100 ml tissue/min) exercise training. Moreover, before exercise training the co-infusion of BQ-123 with acetylcholine enhanced (~25%; P<0.05) the vasodilator response (from 4.3 + 0.3 to 13.7 + 0.7 mL/100 mL tissue/min) compared with acetylcholine alone; after exercise training, the presence of BQ-123 did not significantly affect the vasodilator response to acetylcholine. Conclusions: These data demonstrate that aerobic exercise training reduces ET-1-mediated vasoconstriction in PMW. Furthermore, decreased ET-1-mediated vasoconstriction is an important mechanism underlying aerobic exercise-induced improvement in endothelium-dependent vasodilation in PMW.

scholarly journals Acute and Chronic Impact of Dynamic Exercise on Arterial Stiffness in Older Hypertensives

2008 ◽  
Vol 2 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Kunihiko Aizawa ◽  
Robert J Petrella
Keyword(s):  
Exercise Training ◽  
Arterial Stiffness ◽  
Aerobic Exercise ◽  
Exercise Intervention ◽  
Maximal Exercise ◽  
Dynamic Exercise ◽  
Aerobic Exercise Training ◽  
Stiffness Index ◽  
Moderate Intensity ◽  
Arterial Distensibility

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 β 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.

scholarly journals Aerobic exercise training Increases brain perfusion in elderly women

2011 ◽  
Vol 25 (S1) ◽  
Author(s):  
Rong Zhang ◽  
Rosemary Parker ◽  
Yong‐Sheng Zhu ◽  
Benjamin Tseng ◽  
Garrett Coles ◽  
...  
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Elderly Women ◽  
Brain Perfusion ◽  
Aerobic Exercise Training

scholarly journals The Effect of Aerobic Exercise Training Frequency on Arterial Stiffness in a Hyperglycemic State in Middle-Aged and Elderly Females

Nutrients ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 3498
Author(s):  
Ryota Kobayashi ◽  
Kenji Asaki ◽  
Takeo Hashiguchi ◽  
Hideyuki Negoro
Keyword(s):  
Exercise Training ◽  
Arterial Stiffness ◽  
Aerobic Exercise ◽  
Exercise Group ◽  
Aerobic Exercise Training ◽  
Middle Aged ◽  
Healthy Elderly ◽  
Glucose Intake ◽  
Training Frequency ◽  
Rate Intensity

The frequency of aerobic exercise training in reducing the increase in arterial stiffness during acute hyperglycemia, a risk factor for cardiovascular disease, is unknown. The aim of the study was to determine the aerobic exercise training frequency on arterial stiffness in a hyperglycemic state in middle-aged and elderly females. Twenty healthy elderly people were randomly assigned to a two-times-a-week (T2, n = 10) and four-times-a-week (T4, n = 10) exercise group. All participants exercised for 35 min per session, which consisted of jogging exercises with a heart rate intensity of 65%. Brachial-ankle (ba), and heart-brachial (hb) pulse wave velocity (PWV) were measured before, 4 and 8 weeks after intervention; before the oral ingestion of 75-g of glucose; and 30, 60, and 90 min after ingestion. The baPWV before and 4 weeks after the intervention increased in both groups (p < 0.05), but only increased 8 weeks after intervention in the T2 group. hbPWV was unchanged before, 4 and 8 weeks after intervention in both groups. These findings show that frequent aerobic exercise suppresses the increase in arterial stiffness following glucose intake. The results of this study can be used to support the implementation of exercise programs for middle-aged and elderly patients.

Effects of aerobic exercise training and yoga on the baroreflex in healthy elderly persons

1997 ◽  
Vol 27 (5) ◽  
pp. 443-449 ◽  
Author(s):  
A. J. BOWMAN ◽  
R. H. CLAYTON ◽  
A. MURRAY ◽  
J. W. REED ◽  
M. M. F. SUBHAN ◽  
...  
Keyword(s):  
Exercise Training ◽  
Aerobic Exercise ◽  
Aerobic Exercise Training ◽  
Elderly Persons ◽  
Healthy Elderly
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