Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End?

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Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End? / Amaro-Gahete, Francisco J.; Sanchez-Delgado, Guillermo; Helge, Jorn W.; Ruiz, Jonatan R.

I: Frontiers in Physiology, Bind 10, 909, 2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Amaro-Gahete, FJ, Sanchez-Delgado, G, Helge, JW & Ruiz, JR 2019, 'Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End?', Frontiers in Physiology, bind 10, 909. https://doi.org/10.3389/fphys.2019.00909

APA

Amaro-Gahete, F. J., Sanchez-Delgado, G., Helge, J. W., & Ruiz, J. R. (2019). Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End? Frontiers in Physiology, 10, [909]. https://doi.org/10.3389/fphys.2019.00909

Vancouver

Amaro-Gahete FJ, Sanchez-Delgado G, Helge JW, Ruiz JR. Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End? Frontiers in Physiology. 2019;10. 909. https://doi.org/10.3389/fphys.2019.00909

Author

Amaro-Gahete, Francisco J. ; Sanchez-Delgado, Guillermo ; Helge, Jorn W. ; Ruiz, Jonatan R. / Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End?. I: Frontiers in Physiology. 2019 ; Bind 10.

Bibtex

@article{7ac8f4bab2734af78aad9b5ad8803ac5,
title = "Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End?",
abstract = "Maximal fat oxidation during exercise (MFO) and the exercise intensity eliciting MFO (Fatmax) are considered important factors related to metabolic health and performance. Numerous MFO and Fatmax data collection and analysis approaches have been applied, which may have influenced their estimation during an incremental graded exercise protocol. Despite the heterogeneity of protocols used, all studies consistently stopped the MFO and Fatmax test when the respiratory exchange ratio (RER) was 1.0. It remains unknown however whether reaching a RER of 1.0 is required to have an accurate, reliable, and valid measure of MFO and Fatmax. We aimed to investigate the RER at which MFO and Fatmax occurred in sedentary and trained healthy adults. A total of 166 sedentary adults aged between 18 and 65 years participated in the study. MFO and Fatmax were calculated by an incremental graded exercise protocol before and after two exercise-based interventions. Our findings suggest that a graded exercise protocol aiming to determine MFO and Fatmax could end when a RER = 0.93 is reached in sedentary healthy adults, and when a RER = 0.90 is reached in trained adults independently of sex, age, body weight status, or the Fatmax data analysis approach. In conclusion, we suggest reducing the RER from 1.0 to 0.95 to be sure that MFO is reached in outliers. This methodological consideration has important clinical implications, since it would allow to apply smaller workload increments and/or to extend the stage duration to attain the steady state, without increasing the test duration.",
keywords = "maximal fat oxidation, Fatmax, peak fat oxidation, methodology, RER",
author = "Amaro-Gahete, {Francisco J.} and Guillermo Sanchez-Delgado and Helge, {Jorn W.} and Ruiz, {Jonatan R.}",
year = "2019",
doi = "10.3389/fphys.2019.00909",
language = "English",
volume = "10",
journal = "Frontiers in Physiology",
issn = "1664-042X",
publisher = "Frontiers Media S.A.",

}

RIS

TY - JOUR

T1 - Optimizing Maximal Fat Oxidation Assessment by a Treadmill-Based Graded Exercise Protocol: When Should the Test End?

AU - Amaro-Gahete, Francisco J.

AU - Sanchez-Delgado, Guillermo

AU - Helge, Jorn W.

AU - Ruiz, Jonatan R.

PY - 2019

Y1 - 2019

N2 - Maximal fat oxidation during exercise (MFO) and the exercise intensity eliciting MFO (Fatmax) are considered important factors related to metabolic health and performance. Numerous MFO and Fatmax data collection and analysis approaches have been applied, which may have influenced their estimation during an incremental graded exercise protocol. Despite the heterogeneity of protocols used, all studies consistently stopped the MFO and Fatmax test when the respiratory exchange ratio (RER) was 1.0. It remains unknown however whether reaching a RER of 1.0 is required to have an accurate, reliable, and valid measure of MFO and Fatmax. We aimed to investigate the RER at which MFO and Fatmax occurred in sedentary and trained healthy adults. A total of 166 sedentary adults aged between 18 and 65 years participated in the study. MFO and Fatmax were calculated by an incremental graded exercise protocol before and after two exercise-based interventions. Our findings suggest that a graded exercise protocol aiming to determine MFO and Fatmax could end when a RER = 0.93 is reached in sedentary healthy adults, and when a RER = 0.90 is reached in trained adults independently of sex, age, body weight status, or the Fatmax data analysis approach. In conclusion, we suggest reducing the RER from 1.0 to 0.95 to be sure that MFO is reached in outliers. This methodological consideration has important clinical implications, since it would allow to apply smaller workload increments and/or to extend the stage duration to attain the steady state, without increasing the test duration.

AB - Maximal fat oxidation during exercise (MFO) and the exercise intensity eliciting MFO (Fatmax) are considered important factors related to metabolic health and performance. Numerous MFO and Fatmax data collection and analysis approaches have been applied, which may have influenced their estimation during an incremental graded exercise protocol. Despite the heterogeneity of protocols used, all studies consistently stopped the MFO and Fatmax test when the respiratory exchange ratio (RER) was 1.0. It remains unknown however whether reaching a RER of 1.0 is required to have an accurate, reliable, and valid measure of MFO and Fatmax. We aimed to investigate the RER at which MFO and Fatmax occurred in sedentary and trained healthy adults. A total of 166 sedentary adults aged between 18 and 65 years participated in the study. MFO and Fatmax were calculated by an incremental graded exercise protocol before and after two exercise-based interventions. Our findings suggest that a graded exercise protocol aiming to determine MFO and Fatmax could end when a RER = 0.93 is reached in sedentary healthy adults, and when a RER = 0.90 is reached in trained adults independently of sex, age, body weight status, or the Fatmax data analysis approach. In conclusion, we suggest reducing the RER from 1.0 to 0.95 to be sure that MFO is reached in outliers. This methodological consideration has important clinical implications, since it would allow to apply smaller workload increments and/or to extend the stage duration to attain the steady state, without increasing the test duration.

KW - maximal fat oxidation

KW - Fatmax

KW - peak fat oxidation

KW - methodology

KW - RER

U2 - 10.3389/fphys.2019.00909

DO - 10.3389/fphys.2019.00909

M3 - Journal article

C2 - 31396095

VL - 10

JO - Frontiers in Physiology

JF - Frontiers in Physiology

SN - 1664-042X

M1 - 909

ER -

ID: 225478745