How to mount hooks into concrete ceiling that must be able to support several times bodyweight?
Checking with my engineer-minded girlfriend, we've got too many questions to be able to answer this. The concrete, which is intended to support a dead load, may not be able to support the moment loads that you're planning to put on it. Without having a structural diagram for the entire building and detail on what the beams are intended to do (such as -- are they of a type that is webbing to support a lateral dead load only to hold the walls together? how much load is already on the beam and where? What kind of shape is the concrete in, and how well reinforced is it -- remember it's almost 100 years old!), no one but an engineer could really tell you. Concrete, even reinforced, is a very brittle substance.

You will need to be attached to a structural portion of the structure. In the following picture of an all-concrete warehouse type structure, note that the structure is the columns or piers (vertical elements) and beams (what rides on top of the columns and ties the columns to the walls). Note that in the picture's case, nothing is attached to the beams. That's probably because the beams are there solely to provide a framework for the roof. The things that are attached to the ceiling do not move and therefore are "dead" loads. 

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If you do not have access to one of the beams, you do not want to attempt this task... the concrete you will try to attach to will crack inwards when the moment load is applied to the points. If you have side access to one of the beams or columns, you can probably fasten a plate to side of the beam or column and use several bolts to attach the plate, and then use a metal pole to span between the plates. A metal bar or pipe of sufficient thickness will be elastic enough to absorb and flex with point moment-loads where a single or pair of anchors in concrete will crack. 

Since it's an apartment and is not solely your structure, most of the solutions we could devise if the beam is sufficient to support the various types of loads would include drilling a permanent hole four inches into the beam and then affixing an expanding sleeve bolt with a backup of permanent masonry epoxy. Drilling with a hammer drill and then installing an expanding sleeve bolt carries a large risk of cracking the beam. Since you are living in a shared structure, this is probably not advisable. You will need to check with any homeowners association or deed covenants, which may restrict you legally from performing modifications to the building's structure in such a way that could be detrimental to your neighbors and cohabitants. 

Here's an example of the anchor type I'd use to anchor into concrete: 



They are made by ITW RedHead and are available at most home improvement stores. 

Talking over possible solutions with my girlfriend, who is not a structural engineer and knows nothing of your structure, she suggested using a floor-mounted framework. Her crossfit gym has a gymnastics framework that bolted together into a secure structure that would be sound against several kN of force and would spread the load on the floor instead of trusting the overhead structure. They also would not involve a permanent modification to the structure. I'm not sure where you'd find something like that; I've seen the one at her gym and it looked custom made to me.