INFLUENCE OF PERSONAL FACTORS ON THE ACCURACY OF THE PREDICTION OF ACROMIAL DISTANCE IN SUPINE

Abstract

The objective of this study is to analyze the influence of personal factors on the accuracy of the prediction of acromial distance (AD) in the supine position from AD in sitting position. This cross-sectional study was conducted with 184 healthy participants (aged 18-53 years), and comprised of 112 females and 72 males. The total number of participants were recruited using the purposive sampling, categorized by BMI, gender, and age. These participants were separated into two BMI groups of (group 1: range between 18.5 to 22.9 kg/m2 and group 2: equal or greater than 23 kg/m2) and three age groups. The AD of participants was measured in the sitting and supine positions by two assessors. The intra and inter rater reliability had excellent reliability of both sitting (ICC3,1 0.991 to 0.999) and supine positions (ICC2,1 0.954 to 0.999). The main outcomes of this study were AD measurement in both positions. In terms of multiple regression analysis, the resulting equation was AD in supine = -2.800 + 0.553 (AD in sitting) + 7.149 (BMI) + 3.868 (gender) + 0.216 (age), The adjusted R2 was 0.629 that supported the moderate accuracy of the predictability, if personal factors are added. In conclusion, the personal factors were considered for evaluation of pectoralis minor muscle length by the AD measurement in supine and sitting positions in clinical practice.-