Perhaps a lot of that was possible.
I have read of other crazy stuff like supposedly swimming in full harness. I think there is a video amid the InterWeb of some guys in full plate harness swimming in an Alaskan pool.
The German material about knightly training (ueben
), whether guerre lettres
or belle lettres
, liked to emphasise springen
(running - possibly cross-country), and even rennen
(racing). Also too steinstoessen
(lit. stone-shoving - either like weight-lifting or shot-putting) and stangeschieben
(lit. staff-struggling - like a two-way tug & push-o-war). Some would even name schwimmen
(swimming). And the almighty ringen
(wrestling) and fechten
(fencing) and reiten
(riding) were always there. We may conjecture that any or all such were done both armoured and unarmoured.