Reliability and minimal detectable change of thoracoabdominal mobility measurements using photogrammetry.

Reliability and minimal detectable change of thoracoabdominal mobility measurements using photogrammetry.
Physiother Theory Pract. 2018 Jan 16;:1-10
Authors: Sarro KJ, Mombrini CL, Tonole TB
Abstract
The knowledge about measurement errors of the measuring tool is important before its use, as clinical decisions are going to be made based on its results. Here we investigate intrarater and interrater reliability and the minimal detectable change (MDC) of thoracoabdominal mobility measurements using photogrammetry, considering novice and experienced raters. Thoracoabdominal mobility of 17 healthy participants was assessed; photographs during apnea in maximal inspiration and expiration were used to calculate latero-lateral and anteroposterior diameters of the thorax (at axillary and xiphoid level) and abdomen. One novice and one experienced rater measured the same photographs three times. We found good reliability for the experienced rater (average Intraclass Correlation Coefficient (ICC): 0.98; average MDC: 0.3) and for interrater comparison (average ICC: 0.97; average MDC: 0.35) for all measures, with poorer results for latero-lateral mobility of abdomen. The novice rater presented moderate reliability for latero-lateral mobility of the thorax at axillary level and abdomen (ICC: 0.52 and 0.61; MDC: 1.42 and 2.05, respectively) and good reliability for the other measures (average ICC: 0.81; average MDC: 1.52). The photogrammetric analysi...

Source: Physiotherapy Theory and Practice - January 16, 2018 Category: Physiotherapy Authors: Sarro KJ, Mombrini CL, Tonole TB Tags: Physiother Theory Pract Source Type: research