Yes they both are common and hereditary. If a mother has Diabetes or the gene that carries cancer then it is in fact hereditary.
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Huh okay thanks hope this helped
Answer:
The eccentric contraction can generate up to 50 percent greater tension than the concentric. This is why the eccentric contraction is so powerful not only in controlling and stopping movement, but also in generating sufficient tension in the muscles in order for them to contract explosively.
Hope this helps, have a great day/night, stay safe