Poor form vs Good form- difference in muscles used?

I was wondering if poor running forms works certain muscles and if good running form works other muscles?

I'm working on my form since I videoed myself last week. I'm naturally flatfooted but I really overstride, have no kick, swing my arms from my elbows, am too upright- basically I run backwards in a race... 

By changing my form (gradually etc) will I find that I'm using different muscles/muscle groups more than I presently do? I feel I overuse my quads at the moment and have really puny calves. Will these have inverted prescidence with correct form?  Just curious as I couldn't find an answer elsewhere online. image


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