Table 2.
Architectural properties of human latissimus dorsi muscle when fixed with the arms abducted approximately 100º from the lateral aspect of the body
| Muscle | Age | Gender | Mass (g) | Fascicle length (cm) | Sarcomere length (μm) |
|---|---|---|---|---|---|
| LDS1 (Whole) | 63 | F | 127.3 | 32.3 | 2.55 |
| LDS1 (T) | 32.1 | 29.8 | 2.30 | ||
| LDS1 (LPC) | 95.2 | 34.7 | 2.80 | ||
| LDS2 (Whole) | 63 | F | 175.4 | 33.1 | 2.61 |
| LDS2 (T) | 42.4 | 31.2 | 2.68 | ||
| LDS2 (LPC) | 133.0 | 35.0 | 2.54 | ||
| LDS3 (Whole) | 58 | M | 119.7 | 31.0 | 2.71 |
| LDS3 (T) | 36.6 | 28.8 | 2.54 | ||
| LDS3 (LPC) | 83.1 | 33.2 | 2.87 | ||
| LDS4 (Whole) | 45 | M | 349.9 | 32.4 | 2.70 |
| LDS4 (T) | 115.7 | 31.5 | 2.69 | ||
| LDS4 (LPC) | 234.2 | 33.4 | 2.71 | ||
| Mean ± SEM (whole muscle) | 57.3 ± 8.5 | 193.0 ± 53.7 | 32.2 ± 0.4 | 2.64 ± 0.04 |
SEM indicates standard error of the mean (n = 4). Age is indicated as mean ± SD.
Data in bold represent whole muscle architectural data.
LDS indicates latissimus dorsi muscles that were fixed in a stretched state (cadavers were embalmed with arms abducted approximately 100º relative to lateral aspect of body). T, thoracic region; LPC, lumbar-pelvis-costal region.