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The Dmax method is a valid procedure to estimate physical working capacity at fatigue threshold
Author(s) -
Riffe Joshua J.,
Stout Jeffrey R.,
Fukuda David H.,
Robinson Edward H.,
Miramonti Amelia A.,
Beyer Kyle S.,
Wang Ran,
Church David D.,
Muddle Tyler W.D.,
Hoffman Jay R.
Publication year - 2017
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25255
Subject(s) - medicine , high intensity interval training , electromyography , physical medicine and rehabilitation , physical therapy , intensity (physics) , mathematics , muscle fatigue , physics , quantum mechanics
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