NEW YORK -- If you're a runner, you might have noticed this surprising headline from the April 5 edition of the Guardian: "Brisk walk healthier than running -- scientists." Or maybe you saw this one, which ran in Health magazine the very same day: "Want to lose weight? Then run, don't walk: Study."
Dueling research from rival academic camps? Not exactly. Both articles described the work of a herpetologist-turned-statistician at the Lawrence Berkeley National Laboratory named Paul T. Williams, who in April achieved a feat that's exceedingly rare in mainstream science: He used exactly the same dataset to publish two opposing findings.
One of Williams' papers, from the April issue of Medicine & Science in Sports & Exercise, shows that habitual runners gain less weight than habitual walkers, when the amount of energy they put into their exercise routines is the same.