Table 5. Postural balance of the different occupational groups in the normal standing position by age
and the significant differences between the age groups.


  Age group (years)
 
<39 (1)
40-49 (2)
>50 (3)
 
 
Variable / occupation
Mean (SD)
 
Mean (SD)
 
Mean (SD)
 
p < 0.05
Mediolateral velocity (mms-1)              
Firefighters
3.2 (.9)
 
2.9 (.8)
 
4.6 (2.5)
 
1-3, 2-3
Nursing staff
4.5 (2.4)
 
3.9 (1.2)
 
4.9 (1.5)
 
 
Home care workers
4.6 (1.4)
 
4.6 (1.6)
 
3.7 (1.1)
 
 
Anteroposterior velocity (mms-1)              
Firefighters
5.0 (.9)
 
5.5 (1.3)
 
6.6 (1.6)
 
1-3, 2-3
Nursing staff
5.6 (2.7)
 
5.6 (1.8)
 
7.1 (2.6)
 
 
Home care workers
5.4 (2.0)
 
5.6 (2.5)
 
5.6 (2.0)
 
 
Velocity moment (mm2s-1)              
Firefighters
7.7 (3.4)
 
8.4 (4.6)
 
14.7 (9.1)
 
1-3, 2-3
Nursing staff
8.0 (5.0)
 
10.2 (6.4)
 
15.7 (8.0)
 
1-3
Home care workers
10.3 (4.0)
 
11.5 (6.5)
 
9.0 (3.6)