A study published in the Scandinavian Journal of Medicine & Science in Sports suggests that running economy improves significantly when the runner wears Vibram's FiveFingers instead of regular running shoes, with the condition that the runner has been familiarized with wearing FiveFingers over a period of four weeks. The study, based on the research of the Dublin City University, was published for a larger readership on the newswire of Runners World. The editors of Runners World say that the Irish findings are in line with previous research conducted by other institutions and emphasize that the light weight of the Vibram footwear is helpful in saving energy.