Spenny, in shackles, was forced to kneel before Kenny.
In this episode Kenny turned the competition into a kneeling contest. Spenny complained all episode before being locked in the basement in chains. To get out of the chains he had to kneel before Kenny. Thus the competition was related to the episode as a whole.
29th Jan 2010 / Season 6 Episode 10
Spenny arrived at the house on a non-shooting day to find Kenny having spent much of the production budget on props, costumes and actors to decorate the house and act as emperor Magnus Maximus. The intended competition for the week involved a badminton competition, but Spenny could not understand what Kenny was doing. Thinking that Kenny had declared his own competition, Spenny declared several of his own, including "Who is the better emperor?", acting as Theodosius I, who had killed Maximus historically. However, when he confronted Kenny, Kenny's guards dragged Spenny to the basement and chained him up. After staying in the basement for a period of time, Spenny gave up and knelt before Kenny. Kenny revealed that it was his intent to humiliate Spenny without the need of a competition. He threw Spenny the keys to unlock his chains before fleeing the house.
Endurance competitions entail lasting longer than the other guy. They include competitions when the other guy might get caught or break a rule first, as they didn't endure longer.