IGF-I was the accommodated factor of GH.IGF-I was littleaffected by such factors as training ,age and sex, but it was much affected by ectogenesis GH.

研究表明,IGF-I是生长激促生长作用的调节子,IGF-I受练、年、性别的影响很小,但对外源性生长激有很高的敏感性。