Table 3.
Summary of the population types reported in the included papers.
| Population | N (% of Articles) | Total N of Patients | N with Controls | Total N of Controls |
|---|---|---|---|---|
| Multiple sclerosis (MS) | 5 (17.9%) | 302 | 3 | 55 |
| Chronic obstructive pulmonary disease (COPD) | 4 (14.3%) | 126 | 1 | 24 |
| Healthy elderly | 4 (14.3%) | 214 | 0 | / |
| Healthy | 3 (10.7%) | 99 | 0 | / |
| Symptomatic lumbar spinal stenosis (sLSS) | 2 (7.1%) | 39 | 2 | 44 |
| Cancer | 2 (7.1%) | 8 | 0 | / |
| Unilateral total knee arthoplasty (TKA) | 1 (3.6%) | 24 | 1 | 19 |
| Myotonic dystrophy type 1 (DM1) | 1 (3.6%) | 30 | 1 | 14 |
| Overweight | 1 (3.6%) | 29 | 1 | 23 |
| Healthy elderly fallers | 1 (3.6%) | 28 | 1 | 47 |
| Pulmonary disease | 1 (3.6%) | 28 | 1 | 10 |
| Post-stroke | 1 (3.6%) | 16 | 1 | 9 |
| Congestive heart failure (CHF) or pulmonary hypertension (pHTN) | 1 (3.6%) | 103 | 0 | / |
| Lower limb amputees (LLA) | 1 (3.6%) | 15 | 0 | / |
| TOTAL | 28 | 1061 | 12 | 245 |
N: number of papers