Energy expenditure in adolescents playing new generation computer games

In this research article by Lee Graves and colleagues in the BMJ Christmas issue, the authors made an error in the SI units used (BMJ 2007;335:1282-4, 22 Dec, doi: 10.1136/bmj.39415.632951.80). In the results section of the abstract, in the figure, and in table 1, they mistakenly used kJ/kg/min, rather than J/kg/min.