Reliability of measuring pectoralis minor muscle resting length in subjects with and without signs of shoulder impingement
Braz. j. phys. ther. (Impr.)
;
20(2): 176-183, Mar.-Apr. 2016. tab, graf
Article
in English
| LILACS
| ID: lil-783878
ABSTRACT
Background:
Pectoralis minor adaptive shortening may change scapula resting position and scapular kinematics during arm elevation. A reliable and clinically feasible method for measuring pectoralis minor length will be useful for clinical decision making when evaluating and treating individuals with shoulder pain and dysfunction.Objectives:
To evaluate intrarater, interrater, and between-day reliability of a pectoralis minor (PM) muscle length measurement in subjects with and without signs of shoulder impingement.Method:
A convenience sample of 100 individuals (50 asymptomatic and 50 symptomatic) participated in this study. Intra- and interrater reliability of the measurement was estimated in 50 individuals (25 asymptomatic and 25 symptomatic), and between-day reliability of the measurement repeated over an interval of 7 days was estimated in an independent sample of 50 additional participants. Pectoralis minor length was measured using a flexible tape measure with subjects standing.Results:
Intraclass correlation coefficients (ICC3,k) for intrarater and interrater reliability ranged from 0.86-0.97 and 0.95 for between-day reliability in both groups. Standard error of measurements (SEM) ranged from 0.30-0.42 cm, 0.70-0.84 cm, and 0.40-0.41 cm for intrarater, interrater, and between-day reliability, respectively, across the sample. The minimal detectable change (MDC) for between-day measurements ranged from 1.13-1.14 cm for both groups.Conclusions:
In asymptomatic individuals and in those with signs of shoulder impingement, a single rater or pair of raters can measure pectoralis minor muscle length using a tape measure with very good reliability. This measurement can also be reliably used by the same rater over a seven day interval.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Pectoralis Muscles
/
Physical Examination
/
Shoulder
/
Range of Motion, Articular
/
Shoulder Impingement Syndrome
/
Shoulder Pain
Type of study:
Diagnostic study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
Braz. j. phys. ther. (Impr.)
Journal subject:
MEDICINA FISICA E REABILITACAO
Year:
2016
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Metodista de Piracicaba/BR
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