That was the original never kick a woman before Turner colorized it in version later. No grwoth but you can see the term catfight as Olive turns into a cat after the spinach. She does grow muscles in her firght with the hillbillyy girl in the 1956 cartoon.
This was pretty cutting edge for 1936. They girl was suposed to appear again as a menace to Olive but censors killed it. Those bastards.
That reminds me (Although it's off topic) there were all kinds of new versions of old cartoon when I was a kid. One of them was "Popeye and son" where Popeye had a teenage son as you can tell from the title. Anyway I always hoped that Popeye's son would meet a hot girl who would be his love interest in the cartoon. Then she could sometimes eat spinach and grow muscles and be the hero in the cartoon some times. Or the both of them could eat spinach and be a growing couple together.