A Comparison of Methods to Identify the Mean Response Time of Ramp-Incremental Exercise for Exercise Prescription
type: CreativeWork
description: Introduction: The oxygen uptake (V̇O2) vs power output (PO) relationship from ramp incremental exercise (RAMP) is used to prescribe aerobic exercise. As PO increases, there is a delay in V̇O2 that contributes to a misalignment of V̇O2 from PO making precise prescription of exercise PO untenable. Three methods of determining Mean Response Time (exponential modeling (MRTEXP), linear modeling (MRTLIN), and the steady-state method (MRTSS)) were compared and evaluated for their accuracy at predicting the V̇O2 associated with two PO below estimated lactate threshold (qLT) and one above. Methods: Ten men performed a 30W·min−1 RAMP and three-30 min constant PO cycle ergometer trials at the aforementioned intensities. The measured steady-state V̇O2 was compared to the V̇O2 predicted after adjustment by each of the three MRTs. Results: For all three MRT methods, predicted V̇O2 was not different(P=1.000) from the measured, below qLT. Conclusion: All model predictions can be used for accurate exercise prescription provided the intensity is below qLT.
abstract: Introduction: The oxygen uptake (V̇O2) vs power output (PO) relationship from ramp incremental exercise (RAMP) is used to prescribe aerobic exercise. As PO increases, there is a delay in V̇O2 that contributes to a misalignment of V̇O2 from PO making precise prescription of exercise PO untenable. Three methods of determining Mean Response Time (exponential modeling (MRTEXP), linear modeling (MRTLIN), and the steady-state method (MRTSS)) were compared and evaluated for their accuracy at predicting the V̇O2 associated with two PO below estimated lactate threshold (qLT) and one above. Methods: Ten men performed a 30W·min−1 RAMP and three-30 min constant PO cycle ergometer trials at the aforementioned intensities. The measured steady-state V̇O2 was compared to the V̇O2 predicted after adjustment by each of the three MRTs. Results: For all three MRT methods, predicted V̇O2 was not different(P=1.000) from the measured, below qLT. Conclusion: All model predictions can be used for accurate exercise prescription provided the intensity is below qLT.
author: Behboodpour, Nikan
language: en_ca
keywords: Time Delay, V̇O2 Kinetics, Constant Power Exercise, Correction Methods, Exercise Intensity Domains
date published: 2023-02-13
date modified: 2026-07-27T21:56:03Z
provider: Western University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: The University of Western Ontario

PropertyValue
property ID: Handle
value: https://hdl.handle.net/20.500.14721/32777