Abstract
Background
Archery experience may impact the acromiohumeral distance (AHD) related to shoulder injuries.
Objective
To compare the effect of full draw motion on the acromiohumeral distance in experienced archeries and controls using three-dimensional motion analysis dynamic ultrasonography examination methods.
Methods
Eight experienced archers (archer group) and 10 non-experienced archers (control group) drew with and without a string. Kinematic data of the scapulothoracic and glenohumeral (GH) joints were collected by an electromagnetic motion tracking device during the drawing motion. A full draw spanned 1000 msec before string release. We measured AHD under three conditions using an ultrasound: standing and both full draw positions. The statistical analysis used a two-way ANOVA with archery experience and conditions (p < 0.05).
Results
The GH horizontal adduction angles and the AHD at full draws showed an interaction effect (p < 0.05). In the archer group, the AHD increased more in the with- than in the without-string conditions. In the control group, AHD decreased in the with-string condition compared with the without-string. GH joint angles differed in each group, and the increase in the horizontal adduction angle could contribute to AHD decrease.
Conclusions
Archer group showed less reduction in shoulder joint horizontal abduction angle by string tension than the control group, and no reduction in AHD was observed.
Get full access to this article
View all access options for this article.
References
Supplementary Material
Please find the following supplemental material available below.
For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.
For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.
