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Scoliosis is a condition that affects the spine and causes chest rotation and trunk distortion. Individuals with severe deformities may experience dyspnea on exertion and develop respiratory failure. Respiratory oscillometry is a simple and non-invasive method that provides detailed information on lung mechanics. This work aims to investigate the potential of oscillometry in the evaluation of respiratory mechanics in patients with scoliosis and its association with physical performance. We analyzed 32 volunteers in the control group and 32 in the scoliosis group. The volunteers underwent traditional pulmonary function tests, oscillometry, and the 6-minute walk test (6MWT). Oscillometric analysis showed increased values of resistance at 4 Hz (R4, P<0.01), 12 Hz (R12, P<0.0001), and 20 Hz (R20, P<0.01). Similar analysis showed reductions in dynamic compliance (Cdyn, P<0.001) and ventilation homogeneity, as evaluated by resonance frequency (fr, P<0.001) and reactance area (Ax, P<0.001). Respiratory work, described by the impedance modulus, also showed increased values (Z4, P<0.01). Functional capacity was reduced in the group with scoliosis (P<0.001). A significant direct correlation was found between Cobb angle and R12, AX, and Z4 (P=0.0237, P=0.0338, and P=0.0147, respectively), and an inverse correlation was found between Cdyn and Cobb angle (P=0.0190). These results provided new information on respiratory mechanics in scoliosis and are consistent with the involved pathophysiology, suggesting that oscillometry may improve lung function tests for patients with scoliosis. distortion failure noninvasive non invasive performance 3 6minute minute 6 6MWT. 6MWT MWT . (6MWT) R4, R4 R (R4 P<0.01, P001 P P<0.01 , 0 01 P<0.01) 1 R12 (R12 P<0.0001, P00001 P<0.0001 0001 P<0.0001) 2 R20, R20 (R20 P<0.01. Cdyn, (Cdyn P<0.001 P0001 001 homogeneity fr, fr (fr Ax, Ax (Ax P<0.001. modulus Z4, Z (Z4 (P<0.001) AX P=0.0237, P00237 0237 (P=0.0237 P00338 0338 P=0.0338 P00147 0147 P=0.0147 respectively, respectively respectively) P=0.0190. P00190 P=0.0190 0190 (P=0.0190) pathophysiology (6MWT (R P00 P<0.0 R1 (R1 P0000 P<0.000 000 R2 (R2 P<0.00 P000 00 (Z (P<0.001 P=0.0237 P0023 023 (P=0.023 P0033 033 P=0.033 P0014 014 P=0.014 P0019 P=0.019 019 (P=0.0190 P0 P<0. (P<0.00 P=0.023 P002 02 (P=0.02 P003 03 P=0.03 P=0.01 (P=0.019 P<0 (P<0.0 P=0.02 (P=0.0 P=0.0 (P=0.01 P< (P<0. (P=0. P=0. (P<0 (P=0 P=0 (P< (P= P= (P