TY - JOUR
T1 - A Single Test Protocol to Establish the Full Spectrum of Exercise Intensity Prescription
AU - Iannetta, Danilo
AU - Mackie, Mary Z.
AU - Keir, Daniel A.
AU - Murias, Juan M.
N1 - Publisher Copyright:
© Lippincott Williams & Wilkins.
PY - 2023/12
Y1 - 2023/12
N2 - IANNETTA, D., M. Z. MACKIE, D. A. KEIR, and J. M. MURIAS. A Single Test Protocol to Establish the Full Spectrum of Exercise Intensity Prescription. Med. Sci. Sports Exerc., Vol. 55, No. 12, pp. 2271-2280, 2023. Via the identification of the ramp-specific gas exchange threshold (GET) and respiratory compensation point (RCP), the recently validated step-ramp-step (SRS) protocol enables the prediction of the power outputs at the lactate threshold and maximal metabolic steady state. Purpose: We aimed to test the extended capabilities of the SRS protocol by validating its capacity to predict the power outputs for targeted metabolic rates ((VO2)-V-center dot) and time-to-task failure (T-lim) within the heavy-and severe-intensity domain, respectively. Methods: Fourteen young individuals completed (i) an SRS protocol from which the power outputs at GET and RCP (RCPCORR), and the work accruable above RCPCORR, defined as W '(RAMP), were derived; (ii) one heavy-intensity bout at a power output predicted to elicit a targeted (VO2)-V-center dot equidistant from GET and RCP; and (iii) four severe-intensity trials at power outputs predicted to elicit targeted T-lim at minutes 2.5, 5, 10, and 13. These severe-intensity trials were also used to compute the constant-load-derived critical power and W (W '(CONSTANT)). Results: Targeted (2.41 +/- 0.52 Lmin(-1)) and measured (2.43 +/- 0.52 Lmin(-1)) (VO2)-V-center dot at the identified heavy-intensity power output (162 +/- 43 W) were not different (P = 0.71) and substantially concordant (CCC = 0.95). Likewise, targeted and measured T-lim for the four identified severe-intensity power outputs were not different (P > 0.05), and the aggregated coefficient of variation was 10.7% +/- 8.9%. The derived power outputs at RCPCORR (192 +/- 53 W) and critical power (193 +/- 53 W) were not different (P = 0.65) and highly concordant (CCC = 0.99). There were also no differences between W '(RAMP) and W '(CONSTANT) (P = 0.51). Conclusions: The SRS protocol can accurately predict power outputs to elicit discrete metabolic rates and exercise durations, thus providing, with time efficiency, a high precision for the control of the metabolic stimulus during exercise.
AB - IANNETTA, D., M. Z. MACKIE, D. A. KEIR, and J. M. MURIAS. A Single Test Protocol to Establish the Full Spectrum of Exercise Intensity Prescription. Med. Sci. Sports Exerc., Vol. 55, No. 12, pp. 2271-2280, 2023. Via the identification of the ramp-specific gas exchange threshold (GET) and respiratory compensation point (RCP), the recently validated step-ramp-step (SRS) protocol enables the prediction of the power outputs at the lactate threshold and maximal metabolic steady state. Purpose: We aimed to test the extended capabilities of the SRS protocol by validating its capacity to predict the power outputs for targeted metabolic rates ((VO2)-V-center dot) and time-to-task failure (T-lim) within the heavy-and severe-intensity domain, respectively. Methods: Fourteen young individuals completed (i) an SRS protocol from which the power outputs at GET and RCP (RCPCORR), and the work accruable above RCPCORR, defined as W '(RAMP), were derived; (ii) one heavy-intensity bout at a power output predicted to elicit a targeted (VO2)-V-center dot equidistant from GET and RCP; and (iii) four severe-intensity trials at power outputs predicted to elicit targeted T-lim at minutes 2.5, 5, 10, and 13. These severe-intensity trials were also used to compute the constant-load-derived critical power and W (W '(CONSTANT)). Results: Targeted (2.41 +/- 0.52 Lmin(-1)) and measured (2.43 +/- 0.52 Lmin(-1)) (VO2)-V-center dot at the identified heavy-intensity power output (162 +/- 43 W) were not different (P = 0.71) and substantially concordant (CCC = 0.95). Likewise, targeted and measured T-lim for the four identified severe-intensity power outputs were not different (P > 0.05), and the aggregated coefficient of variation was 10.7% +/- 8.9%. The derived power outputs at RCPCORR (192 +/- 53 W) and critical power (193 +/- 53 W) were not different (P = 0.65) and highly concordant (CCC = 0.99). There were also no differences between W '(RAMP) and W '(CONSTANT) (P = 0.51). Conclusions: The SRS protocol can accurately predict power outputs to elicit discrete metabolic rates and exercise durations, thus providing, with time efficiency, a high precision for the control of the metabolic stimulus during exercise.
KW - Critical power
KW - Exercise intensity domains
KW - Lactate threshold
KW - Maximal metabolic steady state
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=hbku_researchportal&SrcAuth=WosAPI&KeyUT=WOS:001108979300008&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1249/MSS.0000000000003249
DO - 10.1249/MSS.0000000000003249
M3 - Article
C2 - 37436932
SN - 0195-9131
VL - 55
SP - 2271
EP - 2280
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
IS - 12
ER -