TY - JOUR T1 - Estimating breathing movements of the chest and abdominal wall using a simple, newly developed breathing movement measuring device JF - Respiratory Care DO - 10.4187/respcare.02778 SP - respcare.02778 AU - Hideo Kaneko Y1 - 2013/11/12 UR - http://rc.rcjournal.com/content/early/2013/11/12/respcare.02778.abstract N2 - BACKGROUND: The three-dimensional (3-D) distances of specific points on the chest and abdominal wall are useful for assessing the characteristics of breathing movement. This study aimed to determine whether the 3-D distances on the chest and abdominal wall during deep breathing could be estimated using a newly developed breathing METHODS: Breathing movement distances on the chest (bilateral third and eighth ribs) and abdomen (upper abdomen) of 10 healthy young males were measured using a pen-sized mechanical BMMD and a 3-D motion analysis system during deep breathing. Deep breathing was controlled and based on the distances targeted by the BMMD (i.e., 1 cm, 2 cm, and 3 cm) that was placed on the observation points and fixed on a tripod. Simultaneously, the 3-D distances of reflective markers on the observation points were measured. The obtained data were statistically analyzed using a paired t-test, repeated measures analysis of variance with multiple comparisons tests, and linear regression with mixed effects. RESULTS: All the BMMD distances were less than the 3-D distances. The differences between the 3-D and BMMD distances on the chest and abdomen, except for the left lower chest (eighth rib), were significantly greater at a target distance of 3 cm than that of 1 cm. The coefficients of determination ranged from 0.975 to 0.999. CONCLUSION: Linear regression equations provided adequate estimates of the 3-D distances of markers on the chest and abdominal wall during deep breathing. The results suggest that this BMMD is useful for quantitatively assessing deep breathing movement of the chest and abdominal wall in healthy young males. ER -