Table 2: Prevalence of ambulatory disability by age grouping showing impact of age on walking ability, pain and medical profile using univariate analysis.

Variable 60-69 yrs
N=8
Age
70-79 yrs
N=7
80+ yrs
N=2
P Value
Walking ability
Six Minute Walking Distance (m)
Perceived exertion (Mean ± SE) (0-15 Scale)
  393.8
11.2 ± .7
  340.8
11.9 ± .5
  211.8
11.5 ± 1.5
  0.17
0.71
Barriers to walking endurance
% Experiencing Pain
% Shortness of Breath
% Fatigue
  24(N=4)
24(N=4)
  24(N=4)
18 N=3
  6(N=1)
6(N=1)
 
Velocity (Mean ± SE)
 Self-paced
Fastest possible
  55.8+5.5
60.8 ± 5.2
  47.6 ± 3.5
52.9 ± 4.5
  26.2 ± 15.9
29.5 ± 10.9
  0.04*
0.04*
Medical History
 # Comorbid Diseases (Median)
 N=11
 % Cardiovascular Disease
 Hypertension N=8
 Heart disease N=4
Diabetes N=1
  1.0 29(N=5)   1.0 29(N=5)   2.5 12%(N=2)   0.13
Depression CES-D (Mean ± SE)
No depression N=9
 Mild to Severe Depression N=8
9.6±2.9 8.27.9±2.1 16 ± 4.00 0.38
Pain (Mean ± SE)+
 Visual Analogue Scale
 AIMS Pain Subscale
  4.5 ± .97
4.7 ± 6.1
  4.0 ± 1.2
4.1 ± .7
  6.5 ± 3.5
6.0 ± 1.5
  0.39
0.45
Arthritis Impact   3.1 ± .8   4.3 ± 1.1   5.0 ± 2.5   0.56
AIMS Physical Score (0-10) 5.8 ± 2.3 4.9 ± 2.3 6.0 ± 2.8 0.71

* Significantly different for oldest group.