NDLI: The effect of arm abduction angle and contraction intensity on perceived exertion

Content Provider	Springer Nature Link
Author	Timmons, Mark K. Stevens, Staci M. Pincivero, Danny M.
Copyright Year	2009
Abstract	The objective of the present investigation was to examine the effects of voluntary contraction intensity and arm elevation angle on ratings of perceived exertion in healthy young adults. Twelve healthy young adults participated in six separate experimental sessions, during which maximal and sub-maximal arm abduction contractions were performed at one of the following randomly assigned arm angles: 15°, 30°, 45°, 60°, 75°, and 90° arm angles (degrees). The sub-maximal arm abduction contractions (10 s) were performed to target intensities ranging from 10 to 90% of the maximal voluntary contraction (MVC), in randomly ordered 10% increments. Perceived exertion was sampled with a modified Borg category-ratio scale immediately, following each sub-maximal contraction. Voluntary arm abduction torque was significantly (p < 0.05) lower at 45°, 60°, 75° and 90°, as compared to 15°. The ratings of perceived exertion increased significantly (p < 0.05) across the range of contraction intensities, with no significant differences between arm angles. The perceived exertion response, as a function of contraction intensity, was best described as linear across the 30°–90°, while a power function described the response at 15°. The major findings demonstrated that arm position plays a minimal role in mediating the growth in the perceived exertion response, as a function of contraction intensity.
Starting Page	79
Ending Page	86
Page Count	8
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	106
Issue Number	1
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-01-29
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	RPE Magnitude estimation Deltoid Power function Sports Medicine Occupational Medicine/Industrial Medicine Human Physiology
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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