Table 2.
Association of Individual and Summary Gait and Balance Scores with Total Daily Physical Activity
| Gait and Balance Mobility Subtasks and Scores | Stage 1: Associations of Gait and Balance Measures with Physical Activity | Stage 2: Associations of Subtask Summary Scores with Physical Activity | ||
|---|---|---|---|---|
| Individual Associations β (SE, p value) | After Backward Elimination within Subtasks β (SE, p value) | Initial Combined Model β (SE, p value) | Final Model after Backward Elimination β (SE, p value) | |
| Walking | 0.635 (0.131, <.0001) | 0.637 (0.129, <.0001) | ||
| Speed | 0.372 (0.038, <.0001) | 0.372 (0.038, <.0001) | ||
| Cadence | −0.017 (0.037, .64) | - | ||
| Stride Variability | −0.117 (0.037, .0018) | - | ||
| Regularity | 0.187 (0.038, <.0001) | - | ||
| Sit-to-Stand Transition (S1) | 0.437 (0.164, .0081) | 0.440 (0.160, .0061) | ||
| Anterior-Posterior | −0.170 (0.037, <.0001) | −0.074 (0.041, .074) | ||
| Range | 0.053 (0.037, .16) | - | ||
| Posterior | 0.261 (0.037, <.0001) | 0.227 (0.042, <.0001) | ||
| Turn 180° | 0.408 (0.151, .0073) | 0.411 (0.149, .0060) | ||
| Yaw | 0.304 (0.040, <.0001) | 0.311 (0.039, <.0001) | ||
| Frequency | −0.117 (0.038, .0020) | −0.134 (0.036, .0002) | ||
| Stand-to-Sit Transition (S2) | 0.019 (0.214, .93) | - | ||
| Jerk | 0.193 (0.037, <.0001) | 0.193 (0.037, <.0001) | ||
| Range | 0.105 (0.037, .0047) | - | ||
| Median | 0.012 (0.037, .76) | - | ||
| Standing Posture (Eyes Closed) | - | - | ||
| Sway | 0.041 (0.037, .272) | - | ||
| Adjusted R-Squared | .159 | .159 | ||
Note: Stage 1 relates to backward elimination of individual gait scores within each subtask. Stage 2 relates to the backward elimination of subtask summary scores in a combined model.