Table 1.
Descriptive characteristics of the studies included.
| Author of Study | Type of Study | Total Sample | Mean Age | % of Females | Mean BMI | Knee OA Definition | Knee OA Severity | Sarcopenia Definition | Quality |
|---|---|---|---|---|---|---|---|---|---|
| Chung, 2016 [16] |
cross-sectional | 2344 | 62.9 | 57.5 | 24.1 | Only radiological | Moderate | Only low muscle mass | 9 |
| Iijima, 2021 [17] |
cross-sectional | 291 | 72.7 | 78.7 | 24.1 | Only radiological | Moderate | Both low MM and physical performance | 9 |
| Sung Jin, 2016 [18] |
cross-sectional | 4633 | 72.6 | 56.5 | 24.2 | Only radiological | Moderate | Only low muscle mass | 8 |
| Udomsinprasert, 2020 [19] | cross-sectional | 227 | 65.5 | 98.2 | 25 | Combination of radiological and clinical information | Not specified | Both low MM and physical performance | 7 |
| Total | 4 studies cross-sectional | 7495 | 68.4 | 72.7 | 24.4 | 3 studies: only radiological; 1: combination | 3 studies: moderate severity; 1: not specified | 2 studies: only low muscle mass; 2 studies: both low muscle mass and physical performance | Median = 9 |