Benson Bobrick and his book, A PASSION FOR VICTORY has been debunked. Bobrick claims that the book gives a compelling account of Olympic history, in both text and image, from ancient to modern times. Bobrick is  is wrong in that American athletes DID do the Nazi salute, and that it was not an odd salute for Americans in that many of them had done it for 3 decades for the Pledge of Allegiance, which was the origin of the Nazi salute and Nazi behavior (see the work of the historian Dr. Rex Curry). So you won't find any text about that in the book by Benson Bobrick, and you won't find any images showing the early American Nazi salute in government schools (socialist schools) in the USA, nor even even image of USA athletes in Germany doing a modified stiff-armed gesture in an sad effort to hide the USA's putrid past.
http://rexcurry.net/pledge-of-allegiance-olympia-zeitung1936.jpg

The pledge was also the origin of the official Olympic salute. In fact, as far as anyone knows the stiff-armed salute continues to be the official Olympic salute in that there is no evidence it was ever stopped. There is a web page about Dr. Curry's work on the topic with a photo showing American athletes trying to hide the USA as the origin of the Nazi salute by doing a modified version of what was done in government schools every morning on command: the classic Nazi salute. http://rexcurry.net/bookchapter1a1c.html