Effects of a single bout of shoulder horizontal adduction contract relax stretching
Date
2015-04-24Author
Buckles, Amber
Cox, Jennifer
Laochinda, Daniel
Snodgrass, Jacob
Advisor
Manske, Robert C.Metadata
Show full item recordCitation
Cox, Jennifer. Effects of a Single Bout of Shoulder Horizontal Adduction Contract Relax Stretching. --In Proceedings: 11th Annual Symposium on Graduate Research and Scholarly Projects. Wichita, KS: Wichita State University, p. 39
Abstract
The research purpose was to determine how long the effects of a single session of horizontal
adduction (HA) contract relax stretching (CRS) of the posterior shoulder will last. CRS is a
technique where a muscle contraction is held in the target muscle group followed by a passive
stretch of the same muscle group. Current research has shown CRS improves both shoulder
flexibility and range of motion (ROM). 32 asymptomatic male and female (male=8, female=24)
graduate students participated in a repeated measures randomized control trial. Participants were
randomly selected to determine which shoulder received treatment. Participants were instructed
to perform the CRS on their selected treatment shoulder. Therefore, the participants each served
as their own control. Goniometric measurements were taken for internal rotation (IR), external
rotation (ER) and horizontal adduction (HA) prior to intervention and up to 24 hours following.
Paired T-Tests with Bonferroni adjustments were utilized. A significant ROM difference in IR of
the stretched shoulder from pre to immediately post measurements (p=.014), post to one hour
(p=.033), and post to 24 hours (p=<.005) was found. Furthermore, a subsequent change in HA
from immediately post to six hours (p= .030) and immediately post to 24 hours (p=.033) was
found. No difference was detected in ER. CRS improved IR and HA ROM immediately
following stretch and returned 24 hours later (IR pre mean value = 48.000, immediate post
=52.031, and 24 hrs post =45.750; HA pre mean value = 6.843, immediate post =9.625, and 24
hrs post = 7.000). Due to this research we would recommend that posterior shoulder stretching
be implemented more than once in a 24 hour period for optimal benefits which includes
increased ROM.
Description
Presented to the 11th Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Heskett Center, Wichita State University, April 24, 2015.
Research completed at Department of Physical Therapy, College of Health Professions