The question to use Heat or Ice for Back Pain has been asked for hundreds of years, so let me put the question to rest, there is a simple formula with leeway on either side...
1. With acute injures meaning, immediately after the injury and then 48 to 72 hours after, always ICE, then at the 72 hours mark you can choose to use ice or heat.
2. With chronic injuries, its your choice heat or ice they both do the same thing, it all depends which one you will use more of…
I prefer Far Infrared Heat, because of how deep it penetrates and how unified the heat is absorbed.