An electromyographic approach to motor unit activity during sustained isometric contractions Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/zs25xd113

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Eight male college students served as subjects in an investigation to establish a procedural model for research of individual motor units during sustained isometric contractions. Teca TE-4 electromyograph system with needle electrode provided electrical potential recordings from active muscle fibers in the right biceps. Various experimental procedures were tested to produce necessary electromyogram clarity for identification of individual motor unit potentials and measurement of their frequency and amplitude. Established procedures utilized 7 to 10% maximum contraction with stabilization of subject's body position to prevent movement, elimination of electrical interference in and around testing room, and careful placement of needle electrode. Pre-fatigue electrical activity was recorded during the first minute into the contraction. Three post-fatigue recordings were taken at one-minute intervals beginning ten minutes after prefatigue recordings. Suitability of the model was determined by quality of electromyogram recordings. EMG traces allowing motor unit evaluation by the application of Student's t-test for changes occurring in frequency and amplitude reflected model acceptability. A model was produced which permitted evaluation of motor units during sustained isometric contractions.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Madison Medley (mmscannerosu@gmail.com) on 2013-10-15T20:36:56Z No. of bitstreams: 1 KaufmanLeonardA1978.pdf: 1986125 bytes, checksum: f57021b2a6678f6d40183cc0a4590a61 (MD5)
  • description.provenance : Made available in DSpace on 2013-10-16T15:39:59Z (GMT). No. of bitstreams: 1 KaufmanLeonardA1978.pdf: 1986125 bytes, checksum: f57021b2a6678f6d40183cc0a4590a61 (MD5) Previous issue date: 1977-11-18
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-10-15T20:56:39Z (GMT) No. of bitstreams: 1 KaufmanLeonardA1978.pdf: 1986125 bytes, checksum: f57021b2a6678f6d40183cc0a4590a61 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-10-16T15:39:59Z (GMT) No. of bitstreams: 1 KaufmanLeonardA1978.pdf: 1986125 bytes, checksum: f57021b2a6678f6d40183cc0a4590a61 (MD5)

Relationships

In Administrative Set:
Last modified: 08/23/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items