|
Factors
|
Young age group
|
Old age group
|
P values
|
|---|
|
Enrolled number
|
10
|
10
| |
|
Sex
|
Male: 10
|
Male:10
| |
|
Age (years)
|
25.4 ± 2.3
|
66.7 ± 1.7
|
<0.001¶
|
|
Height (cm)
|
175.3 ± 3.5
|
168.8 ± 5.3
|
0.021¶
|
|
Weight (kg)
|
75.1 ± 8.2
|
73.6 ± 8.5
|
0.967¶
|
|
Body mass index
|
24.4 ± 2.6
|
25.8 ± 1.9
|
0.121¶
|
|
Disc degeneration* (average value)
|
L1/2: 0.0
|
L1/2: 0.8
| |
|
L2/3: 0.1
|
L2/3: 1.6
|
|
L3/4: 0.2
|
L3/4: 1.8
|
|
L4/5: 0.2
|
L4/5: 1.7
|
| |
L5/S1: 0.0
|
L5/S1: 1.8
|
- For statistical analysis, Mann–Whitney test was used. *For grading disc degeneration, simple radiography was used and the guideline by Lawrence JS et al. was used. Grade 1 is defined as the status of a slight anterior wear of the vertebral body and osteophyte formation; grade 2 is defined as the status of definite anterior wear of vertebral body and osteophyte formation; grade 3 is defined as the status of osteophyte formation and narrowing of disc; grade 4 is defined as the status of large osteophyte formation, marked disc narrowing, sclerosis of vertebral plates, and posterior subluxation.
