The Effects of Training the Humeral Rotators on Arm Elevation in the Scapular Plane

in Journal of Sport Rehabilitation

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Chris J Durall
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George J Davies
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Thomas W Kernozek
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Mark H Gibson
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Dennis CW Fater
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J Scott Straker
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Context:

It has been hypothesized that the fibers of the infraspinatus and subscapularis superior to the glenohumeral axis of rotation contribute directly to arm elevation.

Objective:

To test this hypothesis by assessing the impact of 5 weeks of concentric isokinetic humeral-rotator training in a modified neutral position on scapular-plane arm-elevation peak torque.

Design:

Prospective, pretest/posttest with control group.

Participants:

24 female and 6 male noninjured college students (N = 30).

Main Outcome Measures:

Scapular-plane-elevation peak torque at 60, 180, and 300°/s.

Results:

Repeated-measures ANOVA indicated no difference in peak torque between groups at any of the angular velocities tested (P < .05)

Conclusions:

5 weeks of concentric isokinetic humeral-rotator training did not significantly increase scapular-plane-elevation peak torque.

Durall is with the Physical Therapy Program at Creighton University, Omaha, NE 68178. He was with the Physical Therapy Program at the University of Wisconsin-LaCrosse and Gundersen-Lutheran Sports Medicine, Onalaska, Wisc, at the time this study was conducted. Kernozek, Davies, Fater, and Straker are with the Physical Therapy Program at the University of Wisconsin-LaCrosse. Davies is also with Gundersen-Lutheran Sports Medicine, Onalaska. Gibson is with the Dept of Sport and Exercise Science and the Athletic Training Program at the University of Wisconsin-LaCrosse. Gibson and Fater are also with Gundersen-Lutheran Medical Center, and Straker, with Gundersen-Lutheran Sports Medicine, LaCrosse.

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