Vibrasjon på underamren øker blodsirkulasjon pga økt NO utskillelse fra blodkarveggene.

http://www.ncbi.nlm.nih.gov/pubmed/19132854

those with diabetes had significantly lower (223%; P = 0.003) skin blood flows compared to the healthy older adults (461%). The rate of NO production, expressed as microM NO . flux, also increased significantly in both groups after vibration (healthy group, 374%; diabetes group, 236%) and remained significantly elevated (healthy group, 258%; diabetes group, 177%) for at least 5 min