Health Claims

Engaging in 3,000 kilocalories of aerobic exercise per week leads to reductions in body fat percentage and fat mass in overweight adults, without changing resting metabolic rate or overall daily...

When people do more aerobic exercise, their bodies adjust energy use in a way that doesn't increase proportionally with the extra calories burned. Both moderate and high exercise levels lead to...

In overweight and obese adults who are inactive, burning 3,000 kilocalories per week through aerobic exercise for 12 weeks leads to measurable decreases in body fat, but burning 1,500 kilocalories...

Even when experienced runners improve their aerobic capacity and lose body fat through marathon training, they don’t always run faster in races — other factors like race-day conditions or pacing may...

Even after 10 weeks of intense marathon training, experienced runners did not become more efficient at using oxygen while running at marathon pace — their bodies didn’t require less oxygen to run the...

When oxygen use during running is adjusted for body size using allometric scaling, it better predicts actual marathon race performance than standard measures of aerobic capacity or running economy.

After 10 weeks of marathon training, experienced runners need to use a smaller proportion of their maximum oxygen capacity to run at the same effort level, not because they became more efficient, but...

After 10 weeks of focused marathon training, experienced runners who were already highly fit saw their aerobic capacity increase by about 24% and their body fat drop by about 2 percentage points,...

For college athletes, everyday movement like walking, standing, and commuting burns about as much energy as their actual workouts — ignoring this can lead to serious miscalculations in how much food...