Table 1. Average of mean values and standard deviation values (std) of the ribs rotation angles and of the volumes of the superior thorax (ST), inferior thorax (IT), superior abdomen (SA), inferior abdomen (IA) and total trunk (Tk) presented by the control group (CG) and swimmer group (SG). rib2 rib3 rib4 rib5 rib6 rib7 rib8 rib9 rib10 ST IT SA IA Tk CG mean -21.5 -22.6 -24.4 -36.7 -30.9 -25.8 -24.4 -23.9 -24.8 7.0 3.4 5.7 2.5 18.8 SD 5.6 5.1 4.67 4.4 4.5 4.6 4.2 3.5 2.6 0.3 0.2 0.4 0.1 1.0 SG mean -12.7 -10.6 -10.0 -20.8 -18.7 -17.7 -17.4 -19.6 -22.7 7.2 3.8 5.0 3.0 19.0 SD 7.2 6.7 6.0 6.4 6.3 5.8 5.3 4.5 3.6 0.8 0.6 0.8 0.7 2.2