Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
from September 2014
©Journal of Sports Science and Medicine (2014) 13, 309 - 314

Research article
A Simplified Approach for Estimating the Ventilatory and Respiratory Compensation Thresholds
Giancarlo Condello1, , Ezekiel Reynolds2, Carl Foster2,3,, Jos J. de Koning2,3, Erika Casolino1, Megan Knutson2, John P. Porcari2
Author Information
1 Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Italy
2 Department of Exercise and Sport Science, University of Wisconsin-La Crosse, USA
3 MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University-Amsterdam, Netherlands

Giancarlo Condello
✉ Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Italy
Publish Date
Received: 14-10-2013
Accepted: 17-12-2013
Published (online): 01-05-2014
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This study aimed to investigate whether ventilatory (VT) and respiratory compensation (RCT) thresholds could be derived from percentages of maximal running speed (Vmax). During the model building phase (1), VT & RCT of 31 competitive level athletes were identified with respiratory gas exchange. During the cross-validation phase (2), 20 subjects performed a treadmill test to identify Vmax and then they performed 30-min runs at velocities 2SE below or above the velocity at VT and RCT derived from (1), with measurement of blood lactate [BL], RPE, heart rate (HR), and speech comfort. Phase (1) revealed that VT and RCT were reached at 67 ± 9% and 84 ± 6% of Vmax. In (2) sustained running 2SE below VT (64% Vmax) was associated with the ability to finish 30-min, with low and constant [BL] (~2.5 mmol.l-1), moderate RPE (~3.0-3.5), a small HR drift, and ability to speak comfortably. Conversely, running at 2SE above RCT (86% Vmax) was associated with the inability to finish 30-min (18.5 ± 2.5 min to fatigue), increasing [BL] (end-exercise = 11.9 ± 0.9 mmol.l-1), high RPE (end-exercise = 8.9 ± 1.0), large HR drift (end-exercise = 98 ± 3% HRmax), and inability to speak comfortably. Simple percentages of Vmax (≤64% and ≥86%) obtained from a treadmill test without gas exchange, may be useful for prescribing exercise training intensities.

Key words: Running, maximal running speed, maximal lactate steady state

           Key Points
  • Simple performance parameters can be used to provide indications of physiologic thresholds.
  • 64% and 86% of the maximal running speed produce conditions consistent with ≤VT and ≥RCT.
  • The combination of technology free feedback techniques such as the Talk Test and RPE and the simple %Vmax can be used as available and easy methods for the performance evaluation.
  • Training prescription can be better addressed to the improvement of the aerobic or anaerobic capacity.
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