- News Home
6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
- About Us
ScienceShot: Calorie Counters, Stand Tall
12 November 2010 11:18 am
How many French fries did that 3-mile stroll burn off? It depends on how tall you are. When walking the same distance, short people burn more calories per pound of body weight than do tall people, simply because they have to take more steps to get there. That may seem obvious, but now researchers have proven it by measuring the metabolism and biomechanics of 48 children and adults walking on a treadmill. At a comfortable pace, study participants all took steps that were three quarters as long as their height. They also burned the same amount of energy per pound per step; short people just had to take more steps to cover the same distance. The study, published today in the Journal of Experimental Biology, pulls height, weight, and distance together into a single simple equation that could make calorie-counting gizmos more accurate and help the military provision troops on extended marches.
See more ScienceShots.