Donald Trump has recently made passing attacks at Hillary Clinton's health. | Getty Trump: Clinton 'takes a lot of weekends off' campaign trail

Donald Trump stepped up his effort to sow doubts about Hillary Clinton's physical capacity to be president, questioning her work ethic on the campaign trail during an interview recorded Tuesday and aired on Wednesday.

Speaking at a Fox News town hall special hosted by Sean Hannity, an open supporter of the Republican nominee, Trump said, "She doesn't really do that much. She'll give a speech on a teleprompter and then she'll disappear. I don't know if she goes home [and] goes to sleep. I think she sleeps. I guess she takes a lot of weekends off. She takes a lot of time off. And you know that's, frankly -- frankly, it's really not fair."


Trump's remarks played into a narrative Hannity has been promoting recently on his Fox show, on which he has highlighted images and video clips supposedly showing signs of mysterious ailments afflicting the Democratic nominee.

The Clinton campaign issued a statement Tuesday night slamming Trump for pushing "deranged conspiracy theories" after he said in a speech Monday that Clinton "lacks the mental and physical stamina to take on ISIS."

"While it is dismaying to see the Republican nominee for president push deranged conspiracy theories in a foreign policy speech, it's no longer surprising," wrote Jennifer Palmieri, Clinton's communications director.

Unsubstantiated rumors about Clinton's health failing have been circulating on right-wing media sites for months, with the influential Drudge Report bannering images of Clinton being helped up stairs and sitting on pillows. Clinton's doctor pronounced her health "excellent" last year in a letter released by her campaign.

Trump, who is 70, also went on to question whether Clinton, who is 68, would be able to handle the physical demands of the presidency, referencing a famous ad Clinton's 2008 campaign aired against then-Sen. Barack Obama during that year's primary battle.

"At 3:00 in the morning, essentially, who do you want to be at that phone at 3:00 in the morning?" he asked. "I'll be up, I will tell you that."