Table 1.
Baseline characteristics by muscle function and physical performance completion, N=56
| Total (N=56) |
Women (N=31) |
Men (N=25) |
|
|---|---|---|---|
| Demographics | |||
| Age, years | 79.3 ± 5.9 | 79.8 ± 5.0 | 78.7 ± 6.6 |
| Women | 55.4 (31) | ||
| White race | 92.9 (52) | 87.1 (27) | 100.0 (25) |
| Anthropometry | |||
| Height, cm | 165.5 ± 7.7 | 160.2 ± 4.8* | 171.9 ± 5.3* |
| Weight, kg | 73.8 ± 12.4 | 69.4 ± 12.9* | 79.3 ± 9.5* |
| Body Mass Index, kg/m2 | 26.9 ± 4.1 | 27.0 ± 4.9 | 26.8 ± 3.0 |
| Lifestyle characteristics | |||
| Education ≥ college | 83.9 (47) | 83.9 (26) | 84.0 (21) |
| Former smoker | 51.8 (29) | 54.8 (17) | 48.0 (12) |
| Physical activity, CHAMPS score mins/day | 117.1 ± 75.6 | 121.9 ± 81.7 | 111.2 ± 68.3 |
| Comorbidity | |||
| Self-report excellent health | 33.9 (19) | 35.5 (11) | 32.0 (8) |
| Self-report no difficulty walking ¼ mile | 92.9 (52) | 90.3 (28) | 96.0 (24) |
| Self-report very easy to walk ¼ mile | 65.4 (34) | 60.7 (17) | 70.8 (17) |
| Self-reported diabetes | 3.6 (2) | 3.2 (1) | 4.0 (1) |
| Self-reported PVD | 5.4 (3) | 6.5 (2) | 4.0 (1) |
| Sensory nerve function | |||
| Monofilament sensitivity | |||
| Light monofilament insensitivity | 41.1 (23) | 41.9 (13) | 40.0 (10) |
| Standard monofilament insensitivity | 17.9 (10) | 16.1 (5) | 20.0 (5) |
| Pain in legs/feet | 17.9 (10) | 29.0 (9)* | 4.0 (1) |
| Numbness in legs/feet | 32.1 (18) | 45.2 (14) | 16.0 (4) |
| Muscle function | |||
| Jump power, W/kg body wt | 20.4 ± 6.7 | 17.9 ± 5.9* | 23.6 ± 6.3 |
| Nottingham power, W/kg body wt | 1.4 ± 0.5 | 1.2 ± 0.4* | 1.7 ± 0.6 |
| Keiser power70% 1-RM, W/kg body wt | 5.1 ± 1.8 | 4.5 ± 1.3* | 5.9 ± 2.0 |
| Keiser strength, kg/kg body wt | 4.8 ± 1.5 | 4.3 ± 1.2* | 5.4 ± 1.7 |
| Grip strength, kg/kg body wt | 0.3 ± 0.1 | 0.3 ± 0.1* | 0.4 ± 0.1 |
| Physical performance | |||
| 6m usual gait speed, m/s | 1.2 ± 0.2 | 1.1 ± 0.1* | 1.2 ± 0.2 |
| Usual-paced 400m walk time, seconds | 377.4 ± 59.9 | 376.7 ± 58.5 | 378.3 ± 62.9 |
| Chair stands speed, stands/second | 0.4 ± 0.1 | 0.4 ± 0.1 | 0.4 ± 0.1 |
*
p<0.05 for women vs. men; values in table are mean ± standard deviation or % (n)