Table 6.
Mean (± standard deviation) physical performance scores assessed at home (H) and in the research center (RC), and physical activity (PA) assessed by questionnaire (Q) and trunk- and thigh-based accelerometers (acc.), specified by age cohort and sex
| 75-yr-old | 80-yr-old | 85-yr-old | Men | Women | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | M±SD | N | M±SD | N | M±SD | P | N | M±SD | N | M±SD | P | |
| Walking speed (m/s) | ||||||||||||
| H | 452 | 1.0±0.3 | 328 | 0.9±0.3 | 215 | 0.8±0.3 | <.001 | 423 | 1.0±0.3 | 572 | 0.9±0.3 | .001 |
| RC | 431 | 1.3±0.2 | 290 | 1.2±0.2 | 177 | 1.1±0.2 | <.001 | 388 | 1.3±0.3 | 510 | 1.2±0.2 | .029 |
| Handgrip strength (N) | ||||||||||||
| H | 451 | 328.0±103.7 | 325 | 304.8±103.9 | 217 | 260.2±84.4 | <.001 | 419 | 388.0±87.7 | 574 | 245.5±65.2 | <.001 |
| RC | 430 | 308.6±103.8 | 289 | 282.8±95.2 | 182 | 246.9±84.1 | <.001 | 387 | 374.1±81.8 | 514 | 222.9±51.8 | <.001 |
| PA of at least moderate intensity (min/day) Q | 448 | 43.8±28.1 | 325 | 41.1±26.8 | 218 | 33.9±25.8 | <.001 | 421 | 43.3±28.5 | 570 | 38.9±26.5 | .013 |
| Trunk acc | 228 | 32.1±24.0 | 137 | 27.9±22.9 | 76 | 18.6±20.3 | <.001 | 177 | 29.5±24.0 | 264 | 27.8±23.2 | .441 |
| Total upright posture (min/day) Q | 447 | 351.6±144.2 | 324 | 357.7±156.5 | 217 | 323.0±153.1 | .004 | 419 | 334.3±154.4 | 569 | 356.9±147.3 | .003 |
| Thigh acc | 245 | 326.9±103.7 | 155 | 350.4±101.5 | 85 | 323.3±101.6 | .025 | 196 | 320.5±104.2 | 289 | 342.8±101.4 | .012 |
Difference tested between age cohorts with ANOVA or Kruskal-Wallis tests and between sexes with independent T-tests or Mann-Whitney U tests