Part 6/13:
Genetics influence spine characteristics: body types like ectomorphs (thinner bones, smaller joints) versus endomorphs (thicker bones, larger joints). Thicker vertebrae and discs tend to support more vertical load but limit mobility, while thinner segments favor flexibility but are more vulnerable to injury.
| Phenotype | Characteristics | Implications for Back Strength |
|---|---|---|
| Thick spine (Powerlifter type) | Thick vertebral bones, large discs | Greater load tolerance, less rotational mobility |
| Thin spine (Yogini/dancer type) | Smaller bones, narrower discs | Greater mobility, potentially more prone to strain |