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Hemodynamic And Metabolic Responses During Self-Paced And Ramp Graded Exercise Testing Treadmill Protocols, Nicholas Mark Beltz
Hemodynamic And Metabolic Responses During Self-Paced And Ramp Graded Exercise Testing Treadmill Protocols, Nicholas Mark Beltz
Health, Exercise, and Sports Sciences ETDs
Purpose: To investigate: 1) if a self-paced (SP) graded exercise testing protocol elicits similar and reliable maximal oxygen uptake (VO2max) responses compared to a ramp (RAMP) treadmill protocol; 2) the impact of SP on cardiac output (Q), stroke volume (SV), and arteriovenous oxygen difference (a-vO2diff); and 3) the metabolic response during SP through blood lactate (BLa-) accumulation and ventilatory threshold (VT) attainment. Methods: Sixteen recreationally trained men (23.7±3.0 yrs) completed two separate treadmill graded exercise testing protocols. SP consisted of five 2-min stages (10 min total) of increasing speed based on the Borg …