The effect of gender on aerobic power and exercise hemodynamics in hypertensive adults

Fagard, Robert; Thijs, Lutgarde; Améry, A

doi:10.1249/00005768-199501000-00006

Cited by 13 publications

(8 citation statements)

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“…The data showed that Ex 0% was effective in reducing high BP and HR, and restored the baroreflex bradycardia in 2K1C rats, confirming our previous study using the same model of hypertensive 2K1C rats (10), as well as other studies that showed that low-intensity exercise training can induce important changes in the cardiovascular system in animals and humans with hypertension (6,7,14,30); however, the mechanisms underlying this effect are not well understood. Some studies have suggested that the increase in baroreflex sensitivity is induced by the improvement of the vagal component (7,31,32), and others suggest that the sympathetic component of the baroreflex function is attenuated (32,33).…”

Section: Discussionsupporting

confidence: 87%

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Cardiac and renal effects induced by different exercise workloads in renovascular hypertensive rats

Soares

Lima

Machado

et al. 2011

Braz J Med Biol Res

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Section: Discussionsupporting

confidence: 87%

“…Moderately intensive exercise training is recognized as having more beneficial effects on the cardiovascular system than higher-intensity exercise training in animals and humans with hypertension (6,(13)(14)(15).…”

mentioning

confidence: 99%

Cardiac and renal effects induced by different exercise workloads in renovascular hypertensive rats

Soares

Lima

Machado

et al. 2011

Braz J Med Biol Res

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“…No subjects had a history or symptoms of cardiac, vascular, pulmonary, metabolic, or neurological disease. Hypertensive individuals (resting blood pressure Ն140/90 mmHg) were also excluded because their central (5) and peripheral (22) hemodynamic responses to exercise differ compared with normotensive age-matched controls. No subjects were taking medications having significant hemodynamic effects, but one older woman did take aspirin on a regular basis.…”

mentioning

confidence: 99%

Impaired leg vasodilation during dynamic exercise in healthy older women

Proctor

Koch

Newcomer

et al. 2003

Journal of Applied Physiology

104

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The purpose of the present study was to test the hypothesis that leg blood flow responses during leg cycle ergometry are reduced with age in healthy non-estrogen-replaced women. Thirteen younger (20-27 yr) and thirteen older (61-71 yr) normotensive, non-endurance-trained women performed both graded and constant-load bouts of leg cycling at the same absolute exercise intensities. Leg blood flow (femoral vein thermodilution), mean arterial pressure (MAP; radial artery), mean femoral venous pressure, cardiac output (acetylene rebreathing), and blood O2 contents were measured. Leg blood flow responses at light workloads (20-40 W) were similar in younger and older women. However, at moderate workloads (50-60 W), leg blood flow responses were significantly attenuated in older women. MAP was 20-25 mmHg higher (P < 0.01) in the older women across all work intensities, and calculated leg vascular conductance (leg blood flow/estimated leg perfusion pressure) was lower (P < 0.05). Exercise-induced increases in leg arteriovenous O2 difference and O2 extraction were identical between groups (P > 0.6). Leg O2 uptake was tightly correlated with leg blood flow across all workloads in both subject groups (r2 = 0.80). These results suggest the ability of healthy older women to undergo limb vasodilation in response to submaximal exercise is impaired and that the legs are a potentially important contributor to the augmented systemic vascular resistance seen during dynamic exercise in older women.

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“…Although the load resistance for the subjects of both groups was similar, the women were found to have signi®cantly lower values for exercise power output expressed in watts. It is well-established that maximal aerobic power (watts) is highly correlated with the mass of skeletal tissue that is active during the exercise (Fagard et al 1995). It has been found that both body mass and lean body mass tend to be lower in women than men (Sagiv et al 1991) and thus, maximal aerobic power would be expected to be lower in the average woman than in the average man as reported previously (Fagard et al 1995;Sagiv et al 1991).…”

Section: Discussionmentioning

confidence: 65%

“…It is well-established that maximal aerobic power (watts) is highly correlated with the mass of skeletal tissue that is active during the exercise (Fagard et al 1995). It has been found that both body mass and lean body mass tend to be lower in women than men (Sagiv et al 1991) and thus, maximal aerobic power would be expected to be lower in the average woman than in the average man as reported previously (Fagard et al 1995;Sagiv et al 1991). However, in the present study, body mass and lean body mass were similar, and because all the subjects were exercised to a level of severe fatigue, it seems that the dierences were due to gender dierences and not to lack of motivation on the part of the women.…”

Section: Discussionmentioning

confidence: 99%

The effect of gender on left ventricular function immediately after the wingate test

Ben‐Sira

Sagiv

1997

European Journal of Applied Physiology

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The effect of gender on left ventricular systolic function and exercise haemodynamics in healthy young subjects was studied during 30-s all-out sudden strenuous dynamic exercise. A group of 22 men [19.3 (SD 1) years] 20 women [19.1 (SD 1) years] volunteered to participate in this study. Two-dimensional direct M-mode and Doppler echocardiograph studies were performed with the subject in the sitting position. The Doppler examination of flow was located with continuous-wave, interrogating ascending aorta measurements. The subjects completed the study without showing any electrocardiograph abnormalities. An interaction effect with stroke volume (P < 0.05) was characterized by a decrease in the men and an increase of stroke volume in the women. Cardiac output rose significantly (P < 0.05) up to 14.5 (SD 6) 1.min-1) for the men and 12.1 (SD 4) 1.min-1 for the women compared to the rest values [5.8 (SD 0.4) and 4.7 (SD 0.5) 1.min-1, respectively]. Flow velocity integral and acceleration time differed significantly between the two groups at rest (P < 0.05). During exercise these differences showed an interaction effect (P < 0.05). These results would indicate that normal men and women respond to sudden strenuous exercise by reducing their left ventricular systolic function, with a significantly greater decrease in women (P < 0.05). The gender differences in the haemodynamic responses during the present study, may, as suggested by others, be attributable to differences in energy metabolism. In addition, changes in Doppler parameters of aortic flow, haemodynamics and blood pressure responses during sudden strenuous exercise differed markedly from those seen before with endurance exercise.

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The effect of gender on aerobic power and exercise hemodynamics in hypertensive adults

Cited by 13 publications

References 0 publications

Cardiac and renal effects induced by different exercise workloads in renovascular hypertensive rats

Cardiac and renal effects induced by different exercise workloads in renovascular hypertensive rats

Impaired leg vasodilation during dynamic exercise in healthy older women

The effect of gender on left ventricular function immediately after the wingate test

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