Exercise intensity optimization for men with high cardiorespiratory fitness.

Exercise intensity is a key parameter for exercise prescription but the optimal range for individuals with high cardiorespiratory fitness is unknown. The aims of this study were (1) to determine optimal heart rate ranges for men with high cardiorespiratory fitness based on percentages of maximal oxygen consumption (%VO(2max)) and reserve oxygen consumption (%VO(2reserve)) corresponding to the ventilatory threshold and respiratory compensation point, and (2) to verify the effect of advancing age on the exercise intensities. Maximal cardiorespiratory testing was performed on 210 trained men.

Abnormal muscle metaboreflex control of sympathetic activity in never-treated hypertensive subjects.

Background: Muscle metaboreflex control in hypertensive subjects has not been described yet. We investigated the integrity of muscle metaboreflex control of muscle sympathetic nerve activity (MSNA) and blood pressure (BP) in never-treated hypertensive subjects.

Methods: Eighteen hypertensive (42+/-1 years) and 22 normotensive subjects (38+/-1 years) were studied.

Effects of home-based exercise training on neurovascular control in patients with heart failure.

Background: The effect of home-based exercise training on neurovascular control in heart failure patients is unknown.

Aims: To test the hypothesis that home-based training would maintain the reduction in muscle sympathetic nerve activity (MSNA) and forearm vascular resistance (FVR) acquired after supervised training.

Methods And Results: Twenty-nine patients (54+/-1.