Table 4.
Objective 1: descriptive statistics for laboratory-validation of the activPAL3μ™
| ActivPAL3μ™ | Direct observation | Accuracy (%) | |
|---|---|---|---|
| Sedentary (total min) | 18.1 (0.1) | 18.0 (0.0) | 99.6 |
| Standing (total min) | 29.2 (0.8) | 28.9 (0.6) | 99.2 |
| Stepping (total min) | 18.8 (0.8) | 19.1 (0.6) | 98.4 |
| Steps (total number) | 2044 (122) | 2074 (144) | 98.6 |
| Sit-stand transitions (total number) | 5 (1) | 7 (0) | 72.1 |
M (SD) are shown for total activPAL3μ™-assessed and directly observed time spent sedentary, standing and stepping (total min), and number of steps and sit-stand transitions, during each activity of the laboratory protocol. The percentage accuracy for activPAL3μ™-assessment vs. direct observation of each behaviour is also shown [% accuracy = (activPAL3μ™ value/direct observation value) × 100]