Exercise recommendations may not curb kids' weight

Duh.

"Health experts generally recommend that children get at least one hour of moderate exercise each day, but that may not be enough to counter the problem of childhood obesity, a UK study suggests.

Researchers found that among more than 200 British schoolchildren followed from age 5 to age 8, 42 percent of boys and just 11 percent of girls met government-recommended exercise levels.

But even among these children, there was no positive effect on weight control over time, the researchers report in the journal Archives of Disease in Childhood...

'We found no association between the amount of physical activity a child did ... and the amount of excess weight they gained,' Metcalf explained.

He said improving children's diets -- which have 'changed markedly' over the past 20 years -- is likely to have a greater impact on their weight and overall health."

Now where have I heard that before, year after year after year?

Oh yeah, I remember.

Here and here.