speed ist schnelligkeit, NICHT schnellkraft
endurance ist ausdauer, NICHT kraftausdauer
strenght ist kraft, NICHT maximalkraft

Scampi Joe. As you don't seem to know what the "correct" translations are, how can you be so sure that the ones offered by Brian are incorrect? After all, there are numerous examples of single words in English translated by several different ones in German, depending on situation, context, etc.

Peak power / Maximal-Kraft ??

Ideally you would first develop a high level of maximal strength before starting a plyometrics program. This gives you the greatest potential for "peak power".

The muscle stores more elastic energy. It can transfer from the eccentric or stretching phase to the concentric or lengthening phase more rapidly. This is the key to generating "peak power".

http://216.239.41.100/search?q=cache:BgR9aEbS...

Brian : it's true that i don't know the right translation for the terms. but i nevertheless know for sure that "maximalkraft", "schnellkraft" and "kraftausdauer" are three different aspects of one's strength. for instance, one can have great "kraftausdauer", but only little "maximalkraft". the translations given by brian are wrong because one is just too general (strength), whereas the other two have nothing to do with "kraft" at all. if you have good endurance, it means that you can for instance run long distances without having to pause to catch your breath. this has a totally different meaning than "kraftausdauer", which is the ability to lift a relatively heavy weight many times in a row.

Scampi Joe. I guess that was addressed to me by the way. Adding what you just wrote at the time would have been very helpful, without it the response didn't add anything helpful. Often just explaining what the concept means helps others to come to a good translation.

Ich habe folgende Ausdrücke für die drei Begriffe gefunden:

Schellkraft: anaerobic strength, fast strength
Kraftausdauer: strength endurance, muscular endurance, aerobic strength endurance
Maximalkraft: maximal strength

Ich bin mir zwar nich t ganz sicher, aber vielleicht hilft das ja schon 'mal weiter.

Da es bei allen drei Begriffen um Muskeln bzw. verschiedenen Formen von Muskelkraft geht, reichen "speed", "endurance" u.ä. ohne einen Zusatz wohl tatsächlich nicht aus. Außerdem scheinen mir "power" und "force" in diesem Zusammenhang auch nicht richtig zu sein.

thanx for your help!

In my volleyballbook it is determind as Strenght (Maximalkraft) and power (Schnellkraft)

As the word anaerobic appears you have to distinguish between laktacid and alatacid I think. So it has to be anaerobic alactacid strenght I guess.