Table 3.
Joint Contributions of Gait/Balance Abilities and Other Covariates to Variance in Total Daily Physical Activity
| Performance or Category | Subtask or Subcategory | Model A β (SE, p value) | Model B β (SE, p value) | Model C β (SE, p value) | Model D β (SE, p value) |
|---|---|---|---|---|---|
| Gait and Balance | Walking | 0.637 (0.129, <.0001) | 0.584 (0.140, <.0001) | 0.534 (0.139, .0001) | 0.519 (0.136, .0002) |
| Sit-to-Stand (S1) | 0.440 (0.160, .0061) | 0.421 (0.177, .018) | 0.383 (0.175, .029) | 0.297 (0.174, .088) | |
| Turn 180° | 0.411 (0.149, .0060) | 0.315 (0.162, .052) | 0.320 (0.160, .046) | 0.335 (0.157, .034) | |
| Other Motor | Parkinsonian Signs | 0.397 (0.171, .021) | 0.282 (0.172, .10) | 0.255 (0.171, .14) | |
| Body Composition | 0.348 (0.313, .266) | 0.335 (0.310, .28) | 0.177 (0.310, .57) | ||
| Cognitive Resources | Late-Life Participation in Activities | 0.584 (0.180, .0012) | 0.419 (0.178, .019) | ||
| Chronic Health | Medical Conditions | 0.488 (0.204, .017) | |||
| Laboratory Measures | 0.551 (0.234, .019) | ||||
| Adjusted R-Squared | .159 | .173 | .187 | .205 | |
| R-Squared Increase from Preceding Model | - | .014 | .014 | .018 | |
| R-Squared Increase from Model A | - | .014 | .028 | .046 |