First symptoms for patients in our cohort as indicated by patients themselves
| Frequency | Percentage | |
|---|---|---|
| Sporting difficulties (running, cycling, swimming) | 12 | 25 |
| Walking difficulties (including waddling gait) | 8 | 17 |
| Falling | 7 | 15 |
| Difficulties walking stairs | 7 | 15 |
| Myalgia | 7 | 15 |
| Toe walking | 7 | 15 |
| Muscle cramps | 6 | 13 |
| Rising from chair | 5 | 10 |
| Muscle weakness | 3 | 6 |
| Fatigue/endurance | 3 | 6 |
| Large calves | 2 | 4 |
| Flat feet | 1 | 2 |
| Myoglobulinuria | 1 | 2 |
| Muscle wasting | 1 | 2 |
| Problems with lifting heavy objects | 1 | 2 |
| None | 2 | 4 |
| None mentioned | 7 | 15 |