Click on image to view larger version.

Figure 1 Hemodynamic Responses of the Resting Calf to Inspiratory Loading

Mean (±SD) responses mean arterial pressure (MAP) (upper panels), calf blood flow (CBF) (middle panels), and calf vascular resistance (CVR) (lower panels) obtained at rest, 1 min, 2 min, and at the end of inspiratory loading protocol, with "placebo loading" (left panels with 2% of maximal inspiratory pressure) and with inspiratory muscle loading (right panels with 60% of maximal inspiratory pressure). Results of 2-way analysis of variance for repeated measures (p < 0.05): *time effect; group effect control versus CHF pre; training status effect CHF pre versus CHF post; interaction control versus CHF pre; ||interaction CHF pre versus CHF post. CHF pre = chronic heart failure patients with inspiratory muscle weakness before inspiratory muscle training; CHF post = chronic heart failure patients with inspiratory muscle weakness after inspiratory muscle training; Control = healthy individuals.