The results of the new study have been published last week in the journal BioMedical Engineering OnLine.

The research comes as a response to previous claims that close contact between pacemakers and music players could lead to the malfunctioning of the former. The disputed was ignited recently due to an incident where a a cardiac pacemaker was believed to have been influenced by the electromagnetic interference from a portable music player.

According to researcher at the US Food and Drug Administration Howard Bassen, there is no link between the two devices that could justify such a claim.

"Based on the observations of our in-vitro study we conclude that no interference effects can occur in pacemakers exposed to the iPod devices we tested," Bassen wrote.

The study measured the low-frequency magnetic field emissions from several iPod music players, all of them placed at 2.7cm above the pacemaker case.