Journal article
Inter-individual variability in the patterns of responses for electromyography and mechanomyography during cycle ergometry using an RPE-clamp model
European journal of applied physiology, Vol.116(9), pp.1639-1649
09/01/2016
DOI: 10.1007/s00421-016-3394-y
PMID: 27325528
Abstract
Purpose To examine inter-individual variability versus composite models for the patterns of responses for electromyography (EMG) and mechanomyography (MMG) versus time relationships during moderate and heavy cycle ergometry using a rating of perceived exertion (RPE) clamp model.
Methods EMG amplitude (amplitude root-mean-square, RMS), EMG mean power frequency (MPF), MMG-RMS, and MMG-MPF were collected during two, 60-min rides at a moderate (RPE at the gas exchange threshold; RPEGET) and heavy (RPE at 15 % above the GET; RPEGET+15%) intensity when RPE was held constant (clamped). Composite (mean) and individual responses for EMG and MMG parameters were compared during each 60-min ride.
Results There was great inter-individual variability for each EMG and MMG parameters at RPEGET and RPEGET+15%. Composite models showed decreases in EMG-RMS (r(2) = -0.92 and R-2 = 0.96), increases in EMG-MPF (R-2 = 0.90), increases in MMG-RMS (r(2) = 0.81 and 0.55), and either no change or a decrease (r(2) = 0.34) in MMG-MPF at RPEGET and RPEGET+15 %, respectively.
Conclusions The results of the present study indicated that there were differences between composite and individual patterns of responses for EMG and MMG parameters during moderate and heavy cycle ergometry at a constant RPE. Thus, composite models did not represent the unique muscle activation strategies exhibited by individual responses when cycling in the moderate and heavy intensity domains when using an RPE-clamp model.
Details
- Title: Subtitle
- Inter-individual variability in the patterns of responses for electromyography and mechanomyography during cycle ergometry using an RPE-clamp model
- Creators
- Kristen C. Cochrane-Snyman - University of Nebraska–LincolnTerry J. Housh - University of Nebraska–LincolnCory M. Smith - University of Nebraska–LincolnEthan C. Hill - University of Nebraska–LincolnNathaniel D. M. Jenkins - University of Nebraska–LincolnRichard J. Schmidt - University of Nebraska–LincolnGlen O. Johnson - University of Nebraska–Lincoln
- Resource Type
- Journal article
- Publication Details
- European journal of applied physiology, Vol.116(9), pp.1639-1649
- DOI
- 10.1007/s00421-016-3394-y
- PMID
- 27325528
- NLM abbreviation
- Eur J Appl Physiol
- ISSN
- 1439-6319
- eISSN
- 1439-6327
- Publisher
- Springer Nature
- Number of pages
- 11
- Language
- English
- Date published
- 09/01/2016
- Academic Unit
- Center for Social Science Innovation; Injury Prevention Research Center; Health, Sport, and Human Physiology
- Record Identifier
- 9984259651002771
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