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People who are more physically active spend less time sitting or being inactive during the day, and this relationship is strong and consistent—increasing activity doesn’t just add movement; it...
In healthy adults who maintain a stable weight, increasing daily physical activity—whether walking, running, or training as an endurance athlete—leads to a proportional increase in total daily...
Even when experienced marathon runners improve their aerobic capacity through training, they don’t always run faster in races—suggesting other factors like pacing, recovery, or race conditions matter...
After marathon training, experienced runners don’t become more efficient at using oxygen while running at race pace—meaning their improved performance comes from having a higher aerobic capacity, not...
When oxygen use during running is adjusted for body size using a mathematical scaling method, it better predicts actual race performance than standard measures of aerobic capacity or energy cost.
After marathon training, runners can maintain the same race pace using a smaller proportion of their maximum oxygen capacity, meaning their aerobic system becomes more capable, not necessarily more...
Even experienced marathon runners who are already highly fit can improve their aerobic capacity and reduce body fat after 10 weeks of focused marathon training, indicating that continued training can...
In overweight adults, 12 weeks of aerobic exercise leads to higher fasting levels of acylated ghrelin and lower levels of glucagon-like peptide-1, but these changes do not correlate with reductions...
Aerobic exercise in overweight adults can reduce the motivation to seek out high-calorie foods, and this change happens whether the exercise is light or intense. This reduced motivation may help...
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...
Athletes burn more energy per hour during their waking non-exercise time than sedentary students — they don’t move more overall, but they pack more activity into fewer hours.
When you account for their size, athletes and sedentary students move about the same amount per pound of body weight each day — the reason athletes burn more total energy is simply because they weigh...
College athletes spend less time sitting or doing light tasks like browsing phones, and more time walking briskly or doing other vigorous movements during their day, so they burn more energy per hour...
Male college athletes burn more total energy during everyday movements like walking and standing than sedentary students, not because they move more relative to their size, but because they are...
After 16 weeks of combined walking and strength training, older women lost about 3–4% of their body fat, regardless of whether they trained once, twice, or three times a week, indicating that total...
After 16 weeks of combined walking and strength training, older women became slightly faster at pushing a weighted sled explosively, showing improved muscle power, whether they trained once, twice,...