OP with some additional details and answers. (Sorry for the long post)
First, thanks so much for all of the great responses. I’ve been given a lot to think about.
The risk is actually quite low either way at this level, IMHO, not b/c swimming will or will not impact results but b/c those results don't matter that much, nor does missing out on one day in the pool.
Good point, but for an 8 year old, in the moment, both seem like a big deal. I’m not sure how my dd would have reacted if I had told her that spending time in the pool would impact her performance and how I would have explained why it would affect her but not her friends. At this point, she’s doing gymnastics for fun but she works hard in class and she worked really hard to get where she is, so I’m sure that she wouldn’t intentionally do anything that she knew would negatively impact her performance at a meet.
The fun experienced is just as valuable as the competition.
Good point, that’s why we stayed at the hotel.
No you should not overexert the day before a meet,
Whether or not it was just the swimming, I’m guessing this is more likely the culprit. Both inside and outside the pool.
So when a gymnast goes and uses their muscles in a different way (a way that is perhaps unfamiliar to the body) the muscles fatigue more quickly.
That’s what I was thinking that day. It’s like playing, but with resistance, and having so much fun/getting caught up in it that you don’t realize how much you’re exerting yourself.
It sounds like your particular child on this particular day might have overdone it (half a day at the pool would definitely wipe my DD out.) It's also possible that even though she said she didn't feel tired, since she is a younger, lower level gymnast, she didn't quite recognize that rubbery muscle feeling as being tired. …
Out of curiosity, did any of the other gymnasts at the pool with her have a tough meet?
Yes, I agree with the first part.
I don’t think it’s fair for me to judge other gymnasts’ performances.
My dd was in the pool for approx 3 hours the afternoon --> night on the day before the meet. She was mostly playing. She’s not a very strong swimmer so the swimming that she did took a lot of effort. That being said, I did see her playing a lot in the pool (not taking it easy). She’s not great at moderation when she’s excited. This hotel has a large outdoor pool that’s very warm/hot. She was in the outdoor pool for about an hour. Sitting/standing/walking but not playing other than running out of the pool to grab large chunks of ice/snow and watching how quickly they melted in the water
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Regarding sleeping in hotels, she was excited to stay at a hotel. As usual, I didn’t sleep that night
but it did appear as though she slept through the night. I let her get up a little later than usual because she got to bed later than usual. On meet day, she didn’t do anything too active.
Just to clarify it wasn’t the whole team that was swimming, I only coordinated with other two families. One of her friends was in the pool the whole time with my DD but one of them arrived at the hotel in the evening so she missed about half the time my dd was in the pool. I didn’t see anyone else from her team that I knew hadn’t already competed while we were at the pool. Considering we were at a hotel filled with gymnasts it was surprising how few of them were in the pool. (Which, at the time, made me think that it probably wasn’t a great idea.)