Researchers at the University of Western Ontario carried out a similar study involving levels of cortisol in hair.
VOA: special.2010.10.12
The trend toward monitors got moving when cardiologist George Klein, of the UniversityofWesternOntario, first approached Medtronic in 1989 with the idea of a semipermanent implant to measure heart rhythms.
"We can see a shift in the bidding to countries and to cities that can afford these Games, " said Janice Forsyth, director of the International Centre for Olympic Studies at the UniversityofWesternOntario.