Lay-off days by thigh muscle location and Munich muscle classification system
| Munich muscle classification system | Mean | SD | 95% CI* | Median | Q1 | Q3 | Min | Max | N | % Within | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lower | Upper | Loc† | Class‡ | ||||||||||
| Anterior | Functional | ||||||||||||
| Fatigue-induced muscle disorders | 7.9 | 5.7 | 5.2 | 10.5 | 6.5 | 2.5 | 12.0 | 1 | 19 | 20 | 21.1 | 80.0 | |
| Delayed onset muscle soreness | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0 | 0.0 | 0.0 | |
| Spine-related neuromuscular muscle disorders | 4.0 | N/A | N/A | N/A | 4.0 | 4.0 | 4.0 | 4 | 4 | 1 | 1.1 | 4.0 | |
| Muscle-related neuromuscular muscle disorders | 13.5 | 8.7 | -0.3 | 27.3 | 11.0 | 8.5 | 18.5 | 6 | 26 | 4 | 4.2 | 16.0 | |
| Total functional anterior | 8.6 | 6.4 | 6.0 | 11.2 | 7.0 | 3.0 | 12.0 | 1 | 26 | 25 | 26.3 | 100.0 | |
| Structural | |||||||||||||
| Minor partial muscle tears | 13.8 | 17.5 | 8.7 | 18.8 | 11.0 | 7.0 | 16.0 | 2 | 124 | 49 | 51.6 | 70.0 | |
| Moderate partial muscle tears | 43.7 | 32.3 | 28.1 | 59.3 | 37.0 | 25.0 | 50.0 | 14 | 156 | 19 | 20.0 | 27.1 | |
| Subtotal/complete muscle injury/tendinous avulsion | 71.5 | 16.3 | N/A | N/A | 71.5 | 60.0 | 83.0 | 60 | 83 | 2 | 2.1 | 2.9 | |
| Total structural anterior | 23.5 | 27.1 | 17.1 | 30.0 | 14.0 | 9.0 | 25.0 | 2 | 156 | 70 | 73.7 | 100.0 | |
| Total anterior | 19.6 | 24.4 | 14.6 | 24.6 | 12.0 | 7.0 | 22.0 | 1 | 156 | 95 | 100.0 | ||
| Posterior | Functional | ||||||||||||
| Fatigue-induced muscle disorders | 7.9 | 8.0 | 5.9 | 9.9 | 6.5 | 4.0 | 9.0 | 1 | 58 | 62 | 20.8 | 59.0 | |
| Delayed onset muscle soreness | 4.5 | 0.6 | 3.6 | 5.4 | 4.5 | 4.0 | 5.0 | 4 | 5 | 4 | 1.3 | 3.8 | |
| Spine-related neuromuscular muscle disorders | 7.0 | 4.8 | 4.8 | 9.2 | 5.0 | 4.0 | 8.0 | 1 | 18 | 21 | 7.0 | 20.0 | |
| Muscle-related neuromuscular muscle disorders | 13.8 | 22.6 | 2.6 | 25.1 | 7.5 | 5.0 | 10.0 | 2 | 100 | 18 | 6.0 | 17.1 | |
| Total functional posterior | 8.6 | 11.4 | 6.4 | 10.8 | 6.0 | 4.0 | 9.0 | 1 | 100 | 105 | 35.2 | 100.0 | |
| Structural | |||||||||||||
| Minor partial muscle tears | 17.3 | 16.9 | 14.5 | 20.1 | 14.0 | 9.0 | 20.0 | 3 | 132 | 143 | 48.0 | 74.1 | |
| Moderate partial muscle tears | 35.5 | 19.5 | 29.8 | 41.2 | 30.0 | 22.0 | 48.0 | 8 | 111 | 47 | 15.8 | 24.4 | |
| Subtotal/complete muscle injury/tendinous avulsion | 56.3 | 4.5 | N/A | N/A | 56.0 | 52.0 | 61.0 | 52 | 61 | 3 | 1.0 | 1.6 | |
| Total structural posterior | 22.4 | 19.5 | 19.6 | 25.1 | 16.0 | 11.0 | 26.0 | 3 | 132 | 193 | 64.8 | 100.0 | |
| Total posterior | 17.5 | 18.3 | 15.4 | 19.6 | 12.0 | 6.0 | 20.0 | 1 | 132 | 298 | 100.0 | ||
| Total | Functional | ||||||||||||
| Fatigue-induced muscle disorders | 7.9 | 7.4 | 6.2 | 9.5 | 6.5 | 3.0 | 10.0 | 1 | 58 | 82 | 20.9 | 63.1 | |
| Delayed onset muscle soreness | 4.5 | 0.6 | 3.6 | 5.4 | 4.5 | 4.0 | 5.0 | 4 | 5 | 4 | 1.0 | 3.1 | |
| Spine-related neuromuscular muscle disorders | 6.8 | 4.8 | 4.7 | 8.9 | 5.0 | 4.0 | 8.0 | 1 | 18 | 22 | 5.6 | 16.9 | |
| Muscle-related neuromuscular muscle disorders | 13.8 | 20.6 | 4.7 | 22.9 | 8.0 | 5.0 | 11.0 | 2 | 100 | 22 | 5.6 | 16.9 | |
| Total functional | 8.6 | 10.6 | 6.7 | 10.4 | 6.0 | 4.0 | 10.0 | 1 | 100 | 130 | 33.1 | 100.0 | |
| Structural | |||||||||||||
| Minor partial muscle tears | 16.4 | 17.1 | 14.0 | 18.9 | 13.0 | 8.0 | 18.0 | 2 | 132 | 192 | 48.9 | 73.0 | |
| Moderate partial muscle tears | 37.9 | 24.0 | 32.0 | 43.8 | 32.0 | 24.0 | 48.0 | 8 | 156 | 66 | 16.8 | 25.1 | |
| Subtotal/complete muscle injury/tendinous avulsion | 62.4 | 12.1 | 47.4 | 77.4 | 60.0 | 56.0 | 61.0 | 52 | 83 | 5 | 1.3 | 1.9 | |
| Total structural | 22.7 | 21.8 | 20.0 | 25.3 | 16.0 | 10.0 | 26.0 | 2 | 156 | 263 | 66.9 | 100.0 | |
| Total | 18.0 | 19.9 | 16.0 | 20.0 | 12.0 | 6.0 | 20.0 | 1 | 156 | 393 | 100.0 | ||
*95% CI based on t-distribution and only calculated for means based on more than three injuries.
†Thigh injury location—anterior or posterior.
‡Thigh injury classification—functional or structural based on Munich muscle classification system.
Q1, 1st quartile (25%); Q3, 3rd quartile (75%); Min, minimum; Max, maximum; N/A, not applicable.