Can martial artists strengthen limbs, appendages, and other parts of their bodies to “super-human” degrees?

It depends how you define 'super-human'. If you mean 'abnormal' or 'super-normal', then yes.

It is well-known that 'high impact' exercises increase, for example, bone density: which makes the bones stronger i.e. less prone to fracture.

Examples of 'high impact' training for a martial artist include and kicking things (e.g, hitting 'punching bags').

Another reference ... National Geographic video - "hard body training" - illustrates "Wolff's law" and its implication for striking in martial art.

Can martial artists strengthen limbs, appendages, and other parts of their bodies to “super-human” degrees?

It depends how you define 'super-human'. If you mean 'abnormal' or 'super-normal', then yes.

It is well-known that 'high impact' exercises increase, for example, bone density: which makes the bones stronger i.e. less prone to fracture.

Examples of 'high impact' training for a martial artist include and kicking things (e.g, hitting 'punching bags').

Another reference ... National Geographic video - "hard body training" - illustrates "Wolff's law" and its implication for striking in martial art.

Edit: someone should add a reference to 'load bearing' exercise.

Can martial artists strengthen limbs, appendages, and other parts of their bodies to “super-human” degrees?

It depends how you define 'super-human'. If you mean 'abnormal' or 'super-normal', then yes.

It is well-known that 'high impact' exercises increase, for example, bone density: which makes the bones stronger i.e. less prone to fracture.

Examples of 'high impact' training for a martial artist include and kicking things (e.g, hitting 'punching bags').

Can martial artists strengthen limbs, appendages, and other parts of their bodies to “super-human” degrees?

It depends how you define 'super-human'. If you mean 'abnormal' or 'super-normal', then yes.

It is well-known that 'high impact' exercises increase, for example, bone density: which makes the bones stronger i.e. less prone to fracture.

Examples of 'high impact' training for a martial artist include and kicking things (e.g, hitting 'punching bags').

Another reference ... National Geographic video - "hard body training" - illustrates "Wolff's law" and its implication for striking in martial art.