Originally Posted by stargazer61:
“I just don't know but think there is a combination of factors. Their fitness means that they are likely to be able to jump higher or go faster than others but their inexperience may mean they are not able to cope with the manoeuvres. The peak physical fitness includes heart and lung function not just muscular strength. They are using different combination of muscle groups than in their previous sporting profession which may mean additional strain. And, as you say, they are more prone to muscular injury just because they are fitter. Add in their natural desire to compete and push themselves, as opposed to slither down the track hanging on to the sides, and there is a recipe for disaster.
The whole show is shambolic; to continue would be stupid”
I think you make a good point which is possibly part of the answer. I was just thinking if that was the reason just before I came back to the thread.
For example I think you get so many torn hamstrings in football because footballers use their quads more and thus their hamstrings aren't always in balance with their quads.
I think in Rebecca's case though it was something different. Eddie Edwards said that she was flapping her arms and spinning them around like a human windmill to try to get more height. If she was overdoing it and putting so much effort into it you can see how her joint may have slipped out of its socket.
Which suggests your other point was largely responsible in this case. That she was just trying so much harder being an athlete and pushed her body much further than a couch potato like Arg would.
It seems like the non-athletes are much safer with their messing about and rolling their body down the slope for hilarious effect.
Ironically the trainers should probably be telling the contestants to not try so hard, don't try to compete, and don't take it seriously as a competition. Just treat it as a bit of a joke and a laugh and you'll be much safer.