A Comparison of Methods to Identify the Mean Response Time of Ramp-Incremental Exercise for Exercise Prescription

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.

Name thesis:degree_name

M Sc

Discipline thesis:degree_discipline

Kinesiology

Grantor dc:publisher

The University of Western Ontario

Year dc:date.issued

2023

Author dc:creator

• Behboodpour, Nikan

Advisor dc:contributor.advisor

• Belfry, Glen R.

• Time Delay
• V̇O2 Kinetics
• Constant Power Exercise
• Correction Methods
• Exercise Intensity Domains

Language dc:language.iso

en_ca

Handle dc:identifier.uri

https://hdl.handle.net/20.500.14721/32777

OAI identifier oai:identifier

oai:uwo.scholaris.ca:20.500.14721/32777