Research article summary (published 27 Feb 2007):

Strategies to identify changes in SEMG due to muscle fatigue during cycling.

Full Abstract

Detection, quantification and analysis of muscle fatigue are crucial in occupational/rehabilitation and sporting settings. Sports organizations such as the Australian Institute of Sports (AIS) currently monitor fatigue by a battery of tests including invasive techniques that require taking blood samples and/or muscle biopsies, the latter of which is highly invasive, painful, time consuming and expensive. SEMG is non-invasive monitoring of muscle activation and is an indication of localized muscle fatigue based on the observed shift of the power spectral density of the SEMG. But the success of SEMG based techniques is currently limited to isometric contraction and is not acceptable to the human movement community. This paper proposes and tests the use of spectral analysis of narrow windows of SEMG near the peak of a cyclic activity to identify the onset of muscle fatigue during cyclic activities. The results demonstrate a highly significant relationship of reduction of the median frequency with the onset of muscle fatigue. The paper also reports the validation of the SEMG study using biochemical analysis of muscle biopsy and blood tests and further verified using power output of the cycle and speed of pedalling.

Author information

Author/s: Singh, V P (VP); Kumar, D K (DK); Polus, B (B); Fraser, S (S);

Affiliation: Electrical and Computer Eng, RMIT University, Melbourne, VIC 3000, Australia.

Journal and publication information

Publication Type: Journal Article

Journal: Journal of medical engineering & technology (J Med Eng Technol), published in England. (Language: eng)

Reference: -2007 Mar-Apr; vol 31 (issue 2) : pp 144-51

Dates: Created 2007/03/16; Completed 2007/05/16; Revised 2008/11/21;

PMID: 17365438, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

External Links for this article
(including full text providers, if available):

Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.

This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.

MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Adult Algorithms Bicycling - physiology Electromyography - methods Exercise Test Humans Leg - physiology

Male Muscle Contraction - physiology Muscle Fatigue - physiology Muscle, Skeletal - physiology Physical Endurance - physiology Physical Exertion - physiology Reproducibility of Results Sensitivity and Specificity

Related articles

These are the highest related articles currently in the database:

• Functional roles of the leg muscles when pedaling in the recumbent versus the upright position. 30 Mar 2005
• Does cycling effect motor coordination of the leg during running in elite triathletes? 24 Apr 2007
• Determination of muscular fatigue in elite runners. 3 Feb 2005
• EMG normalization to study muscle activation in cycling. 13 May 2007
• Muscle activation and time to task failure differ with load type and contraction intensity for a human hand muscle. 13 Nov 2005
• Leg stiffness modulation during exhaustive stretch-shortening cycle exercise. 30 Jan 2007
• Quadriceps femoris electromyogram during concentric, isometric and eccentric phases of fatiguing dynamic knee extensions. 30 Dec 2005
• Neuromuscular fatigue is greater following highly variable versus constant intensity endurance cycling. 29 Jun 2008
• Neuromuscular fatigue following constant versus variable-intensity endurance cycling in triathletes. 8 May 2007
• Assessment of muscle fatigue during biking. 27 Feb 2003

See 100+ related articles.

Related Article Map

Legend: - FREE Full text Article. - Abstract only. - Title only. More help.

See a large map of 100+ related articles.