Table 4.
Methods for deriving moderate to vigorous activity metrics in ambulatory people with multiple sclerosis.
| Metric & Method | Filter | Data source | Cutpoint | Original target population |
|---|---|---|---|---|
| Sandroff-1,584 (24) | Standard | Vertical axis | 1584 cpm | Individuals with MS |
| Sandroff-1,722 (24) | LFE | Vertical axis | 1722 cpm | Individuals with MS |
| Sandroff-1,745 (23) | LFE | Vertical axis | 1745 cpm | Individuals with MS |
| Sandroff-Severity (23) | LFE | Vertical axis | EDSS 0-5.5: 1980 cpm | Individuals with MS |
| EDSS 6.0+: 1185 cpm | ||||
| Freedson (103) | LFE | Vertical axis | 1952 cpm | Healthy adults |
| Sasaki (102, 104) | Standard | VM | 2690 cpm | Healthy adults |
| Agiovlasitis (105) | Standard or LFE | Steps | EDSS 0-3.5: 99 steps/min | Individuals with MS |
| EDSS 4.0-5.5: 89 steps/min | ||||
| EDSS 6.0+: 79 steps/min |
LFE, low frequency extension; VM, vector magnitude; cpm, counts per minute; PA, Physical activity; EDSS, Expanded disability status scale.