That’s an amusing suggestion.
The horses were making a noise when they breathe because they were excited and up in the arena. I also think there was the heat.
The key is that their breathing was in rhythm with their strides. As long as the breathing and the strides match rhythm, the horse may be working hard, but is not working under duress.
There can be, however, a higher pitched or louder breathing sound that even in rhythm is of concern. I only heard that with 1 horse, and that horse has had a tieback surgery and may always make something of a noise. You would need to know in more depth how the horse sounds every day when it comes out and works to be really sure what was going on.
I think people here would be absolutely appalled at what most of the grand prix horse’s exercise and work program is like. They do an immense amount of very hard work. They work up to it gradually, over years, of course, but they work extremely hard.
When I got my lease horse, he was so fit he would climb the walls if he wasn’t worked, and i mean his a** worked off, every day. He needed an hour a day of walking, turnout sufficient for him to have a real wail, AND an hour of work. 6 days a week, or he would hit the ceiling, that’s what he was doing where he came from. And he was a third level horse.
I laughed so hard I practically busted a gut, comparing how that horse was worked to the way the horses are worked at some of the local/regional barns I’ve been at. Those guys are serious how they work the horses. The horse had muscles on his hind end like granite.
When we looked at horses in Europe, there was none of this, ‘let’s give Sparky the day off, I want to go shopping’. It was a very serious business and all the good horses worked very hard.
I was told by a GP trainer that my horse had to be capable of cantering and trotting, non stop, in collection, with going from ext to med to collected gaits, doing changes, pirouettes, half steps - continuously, what he referred to as ‘riding your a** off’, for 45 minutes without a walk break, 5-6 days a week…to do third level.…and as she said, ‘I work my GP horses harder than that’. They all got galloped weekly and most were worked twice a day, not once a day.
You do see some people working them lightly, but it’s usually an ‘iffy’ horse they’re trying to ‘spare’ to keep it going for a given competition…competitions…
If you see a fat unfit dressage horse, it’s usually because they are being ah…‘spared’. There are a few horses that are just tubby and are fine, sound and fit, but they have muscles on them, muscle around the stifle, muscle on the back, muscle on the top of the shoulder…
I used to work for a trainer whose GP horses were not fit - he barely ran thru the movements at a very slow gait with very little energy - no extensions, no mediums, and very little work on pirouettes - each horse was ridden for about 15-20 minutes 3 times a week, no longeing, no redoing things, very rarely turned out, usually hand grazed. Both horses had leg problems and it was just kind of ‘on a wing and a prayer’ all the time. He used to be the ‘master of keeping going’. He used to get out of the truck at the show grounds, go walking around and see if the drug testers were there, and if they were, come back and scratch the horses and go home…