I'm quite sure, because I was involved in this kind of sportive activity during the eighties and nineties of the last century and have build this and similar equipment myself.
Not the left one - look at the three peoples physique. IIRC, the KSK participated in non-military competitions at the time. The image could show some of them.
The second (and also the first) one shows a device design not seen before the eighties, I think.