The Relationship Between Torque and IEMG During Proportional Shortening of the Biceps Brachii Muscle
Piper, Fontaine C.
This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/71083
Description
Title
The Relationship Between Torque and IEMG During Proportional Shortening of the Biceps Brachii Muscle
Author(s)
Piper, Fontaine C.
Issue Date
1988
Doctoral Committee Chair(s)
Groppel, Jack L.,
Department of Study
Kinesiology
Discipline
Kinesiology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Education, Physical
Abstract
The purpose of this investigation was to determine the relationship between torque and IEMG during proportional shortening of the biceps brachii muscle where the angular displacement to each subject was based upon the resting length of their muscle. Thirty male subjects participated in the investigation after giving informed consent. The results of the investigation supported the conclusion that the relationship between torque and IEMG is not influenced by the varying lengths of human muscle. When the degrees of flexion were adjusted, based upon the resting length of the muscle, it was found that this factor did not significantly influence the relationship obtained.
When investigating the relationship between torque and IEMG during isometric contractions the results supported the conclusion that the torque generated at various points along a range of motion are significantly related. The results further indicate that IEMG produced as a result of each contraction are significantly related. The results did not support the conclusion that the torque and resulting IEMG were related at the selected points of investigation along the range of motion investigated.
This investigator believes that the following five (5) factors perhaps influenced the results obtained. (1) There was an inability to adequately stabilize the upper body during the flexion task. This was attributed to the design of the upper body extremity table manufactured by Lumex, Inc. (2) The variation in subject strength could influence the torque generation at various levels of muscle involvement. (3) Variations in the percent of slow twitch and fast twitch fibers in the biceps brachii. (4) The determination of the length of the muscle involved may have been influenced by the regression equations developed from cadaver specimens. (5) The physical effort of the subjects was not evaluated. This investigator observed that the motivational level of the subjects varied and could have been a factor.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
