Amusing footage of a baby girl inadvertently joining her big brother on a treadmill and taking him out as she tumbles off at high speed.

This Newsflare archive video, captured on June 11 at a home near Milton Keynes in England, shows little Valerie putting her foot on the treadmill whilst Zak, her older brother, is running on it.

But Valerie gets pulled along - and off the treadmill, while Zak is forced to take evasive action.

Explains dad Andy: "So I'd just got a new treadmill from my fiancée and everyone wanted to try it. Zak was running on it and out of nowhere my youngest daughter Valerie, who was just curiously putting her foot out over the treadmill, got her foot caught and whoosh! She flew across the treadmill and took Zak out in the process!"

Fortunately, baby Valerie and brother Zak both get up quickly unharmed.

So I'd just got a new treadmill from my fiancée and everyone wanted to try it. So I let my boys have a go. Zak was running on it and out of nowhere my youngest daughter Valerie who was just curiously putting her foot out over the treadmill - got her foot caught and whoosh! She flew across the treadmill and took Zak out in the process.