Force Matching Sense: An Ipsilateral Shoulder Study Investigating the Shoulder Study Investigating the Effect of Torque and Elevation Angle
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Date
2016-06
Authors
Trousset, Katya
Journal Title
Journal ISSN
Volume Title
Publisher
University of Oregon
Abstract
Force matching sense (FMS), or the ability to reproduce a desired force one or more
times, is one of three subdivisions that define proprioception. Unlike the other two,joint
position sense (JPS) and kinesthesia, FMS is not associated with joint motion (Riemann
& Lephart, 2002a). Previous research has found that JPS becomes more accurate as
shoulder elevation and external load increases (D. Suprak, Osternig, & Karduna, 2005).
The goal of the present study was to investigate how torque and shoulder abduction
angle contribute to accuracy of FMS in an ipsilateral remembered force matching task.
FMS was tested on the dominant arm of 12 subjects (6 males, 6 females) at three angles
(50, 70, and 90 degrees of elevation in the scapular plane), and at 20, 40, and 60 percent
above subject baseline torque. It was found that there was no significant change in error
due to abduction angle (p > 0.05), but force reproduction error decreased as torque load
increased (p < 0.05). From these findings, it appears that FMS does not follow the same
pattern as JPS when reproducing a target at different angles, suggesting that these two
components must be considered separately when assessing FMS proprioception.
Description
42 pages. A thesis presented to the Department of Human Physiology and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2016.
Keywords
Proprioception, Human physiology, Shoulder, Torque, Abduction, Neuromusculature, Force matching