Word: fr
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Dates: during 2000-2009
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...fancy private school underwent significantly more physical activity before 3 p.m., but overall they didn't move more. "Once they get home, if they are very active in school, they are probably staying still a bit more because they've already expended so much energy," says Alissa Frémeaux, a biostatistician who helped conduct the study. "The others are more likely to grab a bike and run around after school...
...stickers of Obama's face. And during the hours he spends chugging through Bamako's streets, he has created his own jingles, which he belts out - windows rolled down, fist pumping the air to the rhythm - with a grin on his face: "O-bama! O-bama! Nôtre frère! Nôtre ami!" (See pictures of Obama's family tree...
...Frémeaux's conclusion: "Trying to force a kid to exercise may not work." Anyone who has ever been in P.E. class knows that she's right. (As a certifiable geek, I used to feign stomachaches every day so I could do my homework in the bleachers instead of play basketball.) But is there really nothing we can do to encourage kids to be more active? (See 10 dieting myths debunked...
...Frémeaux and her team did not study behavioral interventions, like programs that reward kids with videogame time if they play an hour of soccer. But her data does suggest that kids have what she calls an activity "set point" - an energy-expenditure baseline to which, over time, they will naturally revert. Despite the fact that they got roughly the same amount of exercise, the kids in the study varied widely in their metabolic health (measured through cholesterol and triglyceride levels) - factors that contribute to later risks of heart disease - but those differences appeared to owe largely to their...
Evolution is likely at work here. "If you think about how we as a species maintain body mass, you would think that nature would probably not have left the only modifiable component of energy expenditure to chance," says Frémeaux. Rather, evolution probably programs much of our willingness to be active. Sure, some people change their lives and become marathoners at age 50. But most of us don't. Our children are no different: whether they get P.E. or not, their bodies "know" how much they want to move...