The Effect of Lumbar Disc Herniation on Spine Loading Characteristics during Trunk Flexion and Two Types of Picking Up Activities

Table 1

The weight of markers in trunk section for lumbar vertebrae and thoracic segment.

	Marker T3	Marker T7	Marker L1	Marker L3	Marker L5
Thx	1/2	1/2	0	0	0
L2	0	0	1/2	1/2	0
L3	0	0	1/6	2/3	1/6
L4	0	0	0	1/2	1/2

Thx: the lumped thoracic segment; L1: the first lumbar vertebra; L2: the second lumbar vertebra; L3: the third lumbar vertebra; L4: the fourth lumbar vertebra; L5: the fifth lumbar vertebra; T3: the third thoracic vertebra; T7: the seventh thoracic vertebra.