The Dmax method is a valid procedure to estimate physical working capacity at fatigue threshold

Joshua J. Riffe; Jeffrey R. Stout; David H. Fukuda; Edward H. Robinson; Amelia A. Miramonti; Kyle S. Beyer; Ran Wang; David D. Church; Tyler W.D. Muddle; Jay R. Hoffman

doi:10.1002/mus.25255

The Dmax method is a valid procedure to estimate physical working capacity at fatigue threshold

Joshua J. Riffe, Jeffrey R. Stout, David H. Fukuda, Edward H. Robinson, Amelia A. Miramonti, Kyle S. Beyer, Ran Wang, David D. Church, Tyler W.D. Muddle, Jay R. Hoffman

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Introduction: The purpose of this study was to determine the validity of the maximal distance–electromyography (Dmax-EMG) method for estimating physical working capacity at fatigue threshold (PWC_FT). Methods: Twenty-one men and women (age 22.9 ± 3.0 years) volunteered to perform 12 sessions of high-intensity interval training (HIIT) over 4 weeks. Before and after HIIT training, a graded exercise test (GXT) was used to estimate PWC_FT using the Dmax method and the original (ORG) method. Results: There was a significant increase in PWC_FT for both ORG (+10.6%) and Dmax (+12.1%) methods, but no significant difference in the change values between methods. Further, Bland–Altman analyses resulted in non-significant biases (ORG–Dmax) between methods at pre-HIIT (–6.4 ± 32.5 W; P > 0.05) and post-HIIT (–4.2 ± 33.1 W; P > 0.05). Conclusion: The Dmax method is sensitive to training and is a valid method for estimating PWC_FT in young men and women. Muscle Nerve 55: 344–349, 2017.

Original language	English
Pages (from-to)	344-349
Number of pages	6
Journal	Muscle and Nerve
Volume	55
Issue number	3
DOIs	https://doi.org/10.1002/mus.25255
State	Published - 1 Mar 2017
Externally published	Yes

Keywords

cycle ergometry
electromyography
neuromuscular fatigue
reproducibility
sensitivity
validity

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10.1002/mus.25255

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title = "The Dmax method is a valid procedure to estimate physical working capacity at fatigue threshold",

abstract = "Introduction: The purpose of this study was to determine the validity of the maximal distance–electromyography (Dmax-EMG) method for estimating physical working capacity at fatigue threshold (PWCFT). Methods: Twenty-one men and women (age 22.9 ± 3.0 years) volunteered to perform 12 sessions of high-intensity interval training (HIIT) over 4 weeks. Before and after HIIT training, a graded exercise test (GXT) was used to estimate PWCFT using the Dmax method and the original (ORG) method. Results: There was a significant increase in PWCFT for both ORG (+10.6%) and Dmax (+12.1%) methods, but no significant difference in the change values between methods. Further, Bland–Altman analyses resulted in non-significant biases (ORG–Dmax) between methods at pre-HIIT (–6.4 ± 32.5 W; P > 0.05) and post-HIIT (–4.2 ± 33.1 W; P > 0.05). Conclusion: The Dmax method is sensitive to training and is a valid method for estimating PWCFT in young men and women. Muscle Nerve 55: 344–349, 2017.",

keywords = "cycle ergometry, electromyography, neuromuscular fatigue, reproducibility, sensitivity, validity",

author = "Riffe, {Joshua J.} and Stout, {Jeffrey R.} and Fukuda, {David H.} and Robinson, {Edward H.} and Miramonti, {Amelia A.} and Beyer, {Kyle S.} and Ran Wang and Church, {David D.} and Muddle, {Tyler W.D.} and Hoffman, {Jay R.}",

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AU - Riffe, Joshua J.

AU - Stout, Jeffrey R.

AU - Fukuda, David H.

AU - Robinson, Edward H.

AU - Miramonti, Amelia A.

AU - Beyer, Kyle S.

AU - Wang, Ran

AU - Church, David D.

AU - Muddle, Tyler W.D.

AU - Hoffman, Jay R.

PY - 2017/3/1

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N2 - Introduction: The purpose of this study was to determine the validity of the maximal distance–electromyography (Dmax-EMG) method for estimating physical working capacity at fatigue threshold (PWCFT). Methods: Twenty-one men and women (age 22.9 ± 3.0 years) volunteered to perform 12 sessions of high-intensity interval training (HIIT) over 4 weeks. Before and after HIIT training, a graded exercise test (GXT) was used to estimate PWCFT using the Dmax method and the original (ORG) method. Results: There was a significant increase in PWCFT for both ORG (+10.6%) and Dmax (+12.1%) methods, but no significant difference in the change values between methods. Further, Bland–Altman analyses resulted in non-significant biases (ORG–Dmax) between methods at pre-HIIT (–6.4 ± 32.5 W; P > 0.05) and post-HIIT (–4.2 ± 33.1 W; P > 0.05). Conclusion: The Dmax method is sensitive to training and is a valid method for estimating PWCFT in young men and women. Muscle Nerve 55: 344–349, 2017.

AB - Introduction: The purpose of this study was to determine the validity of the maximal distance–electromyography (Dmax-EMG) method for estimating physical working capacity at fatigue threshold (PWCFT). Methods: Twenty-one men and women (age 22.9 ± 3.0 years) volunteered to perform 12 sessions of high-intensity interval training (HIIT) over 4 weeks. Before and after HIIT training, a graded exercise test (GXT) was used to estimate PWCFT using the Dmax method and the original (ORG) method. Results: There was a significant increase in PWCFT for both ORG (+10.6%) and Dmax (+12.1%) methods, but no significant difference in the change values between methods. Further, Bland–Altman analyses resulted in non-significant biases (ORG–Dmax) between methods at pre-HIIT (–6.4 ± 32.5 W; P > 0.05) and post-HIIT (–4.2 ± 33.1 W; P > 0.05). Conclusion: The Dmax method is sensitive to training and is a valid method for estimating PWCFT in young men and women. Muscle Nerve 55: 344–349, 2017.

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The Dmax method is a valid procedure to estimate physical working capacity at fatigue threshold

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