Her coach Michael Bohl said he was happy with Jones' condition as she neared the end of her swimming career.
"She's been doing nine sessions a week, and two gym sessions a week coming into this, and we were really happy with her from coming off Santa Clara (in California, where she swam faster than at Olympic trials)."
Twitter users rallied to show their support.
SSW-au tweeted, "Cold hard facts: Leisel Jones does not look like she's in peak condition for an Olympics. But coach says she's ready to go so we'll soon see."
Jessy-louu tweeted, "Back off Leisel Jones. It's outrageous. Does she not have enough pressure On her already? So much for Aussie spirit", while BecTeh wrote, "(It's) bad enough she has to wear a swimsuit for the world to see, but then to have pictures of her in it dissected?"
Jones rejected suggestions she was stressed.
"I'm so relaxed, and I'm just really enjoying everything about these Games and the lead-up," she said.
- AAP