Reliability and Validity of Measuring Shoulder Internal and External Rotation Strength in Volleyball Specific Positions.

ABSTRACT:

Background

Overhead athletes are susceptible to shoulder injuries, among which rotator cuff injuries are common and often directly associated with muscle weakness. Therefore, valid and reliable measures of rotator cuff strength at sport specific positions may be a vital part of sports physical therapy practice. Purpose: The current study aimed to determine the inter- and intra-tester reliability of measuring shoulder internal rotation (IR) and external rotation (ER) strength at a novel testing position, 130° of abduction and compared to the 90°/90° position. A secondary aim was to assess concurrent validity between measurements taken with the Humac® Norm™ Isokinetic Dynamometer (IKD) and Microfet® 2 hand-held dynamometer (HHD).

Study design

Inter-Rater and Intra-Rater Reliab

SUBMITTER: Loepfe JG 

PROVIDER: S-EPMC11964689 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature