2011 年 23 巻 3 号 p. 431-435
[Purpose] Recently, a digital inclination meter was developed to evaluate severe defective posture. However, the validity and reliability of this instrument for slightly defective posture have not been tested. The purpose of this study was to test the intra-rater reliability, inter-rater validity and reliability of the instrument with healthy adults. [Methods] Ten subjects volunteered to participate in this study. Trunk and pelvis inclination angles were measured using the digital inclination meter. To test intra-rater reliability, a rater evaluated 5 standing postures 3 times for each of the 10 subjects using the digital inclination meter. To test inter-rater reliability, the postures of 5 subjects were measured 3 times by 3 raters. In order to test validity, each posture was also captured using a digital camera and image analysis software. [Results] All tests of intra-rater reliability and inter-rater reliability were at either the substantial or almost perfect level (intra-class correlation coefficients were from 0.61 to 1.00). Pearson's correlation coefficients for the results of digital inclination meter and image analysis were over 0.85 for all measurement items. [Conclusion] This evaluation method using the digital inclination meter was shown to be a reliable, valid and easy way to assess defective posture in a clinical setting as compared to image analysis using a digital camera and software.