Table 2 Specimen characteristics

Females: Males

6:3

Age (years; median [IQR])

82.00 [8.00]

Height (m; median [IQR])

1.57 [0.08]

Weight (kg; median [IQR])

54.40 [11.30]

BMI (kg/m²; median [IQR])

22.00 [2.00]

Chest thickness (mm; median [IQR])

175.00 [35.00]

Thoracic kyphosis angle (°; median [IQR])

16.60 [3.79]

Global spinal stiffness (N/mm; median [IQR])

12.64 [5.65]

Terminal spinal stiffness (N/mm; median [IQR])

12.83 [5.95]