The revelation comes just days after promising triathlete Hollie Avil retired having admitted to an eating disorder brought on by a comment about her weight from a coach.
Avil said the remark from the coach directly led to her developing an unhealthy relationship with food that ultimately derailed her sporting ambitions.
But Minichello has slapped down the comments about Ennis’s physique, insisting he has never had any issues with her shape.
“I’ve never had any issue with her weight or shape,” he told theGuardian. “There are times I’ve wished she was taller, but that’s it.
“The things you can’t deal with are what we’ve dubbed as ‘silver bullets’. And other people. You can’t deal with the expectations and pressures that are on other people, like the BOA’s [British Olympic Association] team management.”
UK Athletics declined to comment on Thursday night.
Ennis is in action this weekend at the World Combined Events Challenge in Gotzis, where she will be hoping to a lay marker down ahead of theOlympics.
Minichiello also hit out at plans from the British Olympic Association for Team GB members to sign a code of conduct ahead of the Olympics.
“What’s a big deal to Clive Woodward at the minute is the athletes’ agreement,” he said, ahead of Ennis’ last heptathlon before the Olympics in Gotzis, Austria this weekend.
“The Olympics, for Jess, is an individual environment and she knows how to behave and get the best out of herself.
“You know what? Jessica doesn’t have a problem with behaviour. We don’t have an issue there, we’re not going to get embroiled in bad stuff. She signs the flag, we just get on. It’s an aesthetic. I may get in trouble for (saying) that.”