Sportswear company Under Armour said its Men’s UA RUSH Compression shirt’s abilities were “tested and proven” in a promotional message on its website on February 15, 2020.
It claimed the garment’s mineral-infused fabric “absorbs the energy your body emits and reflects it back into your tissues and muscles”.
However, a ruling published on Wednesday by the Advertising Standards Authority (ASA) said the ad was “misleading” as the evidence given to support the claim that the top had been “tested and proven to improve strength and endurance” was “not adequate”.
The ad suggested that during exercise the shirt noticeably improved strength and endurance for the wearer, over the area of the upper body that it covered, the ASA said.
Two studies provided by Under Armour to prove its claims had used a shirt which was different to the advertised product.