Table 1.
Qualitative characteristics for the participants by their gait speed
| Characteristic | Baseline 400 meter walk speed < 0.8 m/s N = 451 |
Baseline 400 meter walk speed ≥ 0.8 m/s N = 684 |
P Value |
|---|---|---|---|
| Age (years) | 79.6 ± 5.4 | 78.1 ± 5.1 | < 0.01 |
| Women | 334 (74.1) | 444 (61.5) | < 0.01 |
| Ethnicity/race | |||
| Hispanic | 17 (3.8) | 26 (3.8) | 0.99 |
| Caucasian | 355 (78.7) | 545 (79.7) | 0.75 |
| African American | 79 (17.5) | 113 (16.5) | 0.72 |
| SPPB score | 6.7 ± 1.6 | 8.0 ± 1.3 | < 0.01 |
| SPPB score <8 | 286 (64.4) | 189 (27.6) | < 0.01 |
| 400 m walking speed (m/sec) | 0.68 ± 0.09 | 0.94 ± 0.10 | < 0.01 |
| Body mass index (kg/m2) | 31.5 ± 6.9 | 29.5 ± 5.3 | < 0.01 |
| Self-reported minutes per week in walking/weight training activities | 14.0 ± 29.5 | 20.0 ± 35.7 | 0.02 |
| 3MSE score (0–100 scale) | 91.6 ± 5.6 | 92.4 ± 5.0 | 0.02 |
| Conditions a | |||
| Hypertension | 346 (76.7) | 460 (67.2) | < 0.01 |
| Diabetes | 131 (29.0) | 178 (26.0) | 0.29 |
| Heart attack or myocardial infraction | 46 (10.2) | 41 (6.0) | 0.01 |
| Stroke | 33 (7.3) | 47 (6.9) | 0.87 |
| Cancer | 111 (24.6) | 140 (20.5) | 0.12 |
| Chronic pulmonary disease | 75 (16.6) | 103 (15.0) | 0.52 |
Results are in a subset of individuals (451 in < 0.8 m/s gait speed and 684 in ≥ 0.8 m/s gait speed) with valid accelerometry data. Data are means and standard deviations or n (%);
SPPB = short physical performance battery.
Some values may slightly differ from those previously published data because of differences in analysis participants.
BMI, body mass index; 3MSE, Modified Mini-Mental Status Exam; SD, standard deviation; GS, gait speed.
a
Self-reported, physician diagnosed.
LIFE datasets version 2.1 were used for analyses