Stress levels for different loads and spinal conditions, for a straight centered spine (SCS), i.e. (CL5S1VL) unless otherwise specified.

Table 1: Stress levels for different loads and spinal conditions, for a straight centered spine (SCS), i.e. (CL5S1VL) unless otherwise specified.

Vertebra Analyzed	Condition of the Analyzed Load	Stress Value	Stress Type
L5S1	TAH weight (SCS).	230 kPa	Compression stress
L5S1	5 kg school bag held centered on the body (SCS).	25 kPa	Compression stress
L5S1	5 kg school bag held along the body at 0.25 m from a SCS.	1000 kPa	Bending stress
L5S1	5 kg school bag held at 0.5 m from a SCS.	2000 kPa	Bending stress
L5S1	Stress differential between the 2 sides of the L5S1 junction vertebrae for a 5 kg school bag held at 0.5 m from a SCS.	4000 kPa	Bending stress
L5S1	Effect of a 40 mm TAH weight trunk shift.	1500 kPa	Bending stress
L5S1	Standing jump (SCS).	667 kPa	Compression stress
T5	Standing jump (SCS).	1080 kPa	Compression stress
T5	Standing jump at a T5 vertebra deviated of a d = 20 mm from a SCS.	6190 kPa	Bending stress
L5S1	Impulse from the saddle to the rider (SCS).	1000 kPa	Compression stress
T5	Impulse from the saddle to the rider at the T5 vertebra deviated of d = 20 mm.	9280 kPa	Bending stress