@dingledongle I posted upthread about my experiences with an abusive swimming coach. I was doing almost 20 hours a week by age 11, and I was getting up to train at 4.30am. 16-20 hours is recommended for elite or aspiring elite level swimmers, and for some reason some clubs extrapolate that their talented juniors should also be doing that workload. I have longlasting damage to my knees, hips, back and shoulders and I've had surgeries to repair injuries from overuse.
My parents never pushed me, particularly. The coaches certainly did, and then the culture takes over and you push yourself. There was a lot of pushy parenting around though. Ours were allowed to stay and watch, and there were plenty sat there with their own stopwatches, taking splits every 50m.
I think about the parents often. I wonder why more of them didn't step in and remove their children from that situation. There were some that did, of course, and those kids were generally regarded as not being tough enough to cut it. There was quite a dismissive attitude towards people who chose to leave- perhaps because secretly we didn't want to stay? I think someone mentioned earlier that people who abuse children also groom the adults, and I think that's the explanation that makes a lot of sense to me.
My coach only abused the most talented swimmers. If he was yelling at you, or calling you names, or telling you you were fat, or throwing things in your direction it was because he cared. The others were all but ignored (equally great for their self-esteem, I would imagine). There was a general attitude of you were lucky if he was picking on you/ your child because that meant he was taking an interest. And he'd coached Olympic champions so he had to know what he was doing.