Actually 2 questions:
1. Do English Present Progressive and German Partizip 1 have the same grammatical origin? I mean something like `I am thinking.` and `Ich bin denkend.`, although German uses it only in combination with verbs (e.g. `Denkend starrte ich ins Leere.`) which is more like a gerund.
2. Can I also use `Ich bin laufend.` in the meaning of `I am walking.`?
Interesting question. English present progressive always ends in "ing," just as does a participle or gerund, as you know. As to whether the present progressive comes from the German language, I do not know, but it is an intriguing question, nonetheless.