Early this month, the Department of Health and Human Services released an update to the 2008 Physical Activity Guidelines for Americans. The recommended amount of physical activity needed to maintain good health really hasn't changed. Children should get 60 minutes of physical activity a day and most of it should be moderate to vigorous aerobic activity (i.e., increased heart rate, hard to carry on a conversation) and they need muscle strengthening exercises, too. Little children, and their caregivers, should stay active throughout the day. That is subjective, but it means less screen time!
The amount of moderate to vigorous physical activity and strength training that adults need is still 150 to 300 minutes of aerobic activity a week, less if it's vigorous (like running at a 10 m/m pace or faster), and twice a week weight training. The Guidelines say that this amount of physical activity is beneficial, but to really improve health and prevent disease MORE is necessary. That goes for strength training (e.g., lift weights), too. The least amount Americans need to do is twice a week for 20 minutes. Older adults, say 50+ should consider weight training imperative, as it will slow age related muscle loss (i.e., sarcopenia). Read more from the DHHS here. And for an announcement on the changes from NPR, read here.
So what has me all riled up... so much so I am writing a blog post when I have pretty much stopped making time for them? Well, the Guidelines now claim that any large muscle motor activity/movement can count toward your aerobic goal. So if you walk from your car to a building and it takes 5 minutes, good for you!! Only 295 more to go. If you mop the floor for 10 minutes - you are AWESOME, 285 more to go. And so forth.
As I perceive it, that is not exercise. And here is why I think the DHHS wants to say it is. Because, as a nation, we have been woefully behind in meeting the PAGA (physical activity guidelines). According to the CDC, less than 1/4 (25%!) meet the combined aerobic and strength training minimum goal. But if the government says all those little things DO count, then when they ask people about meeting the per week aerobic goal, more can say yes. So the next time the CDC reports results form a survey, the percent of the population meeting the aerobic goal might jump from 50% to 75%, only because the definition has changed, not because people became more active.
Imagine our trend lines - there could be a sudden spike in the number of Americans who meet the goals, but it won't be because people are exercising more, it will be because they are counting things that probably shouldn't count. Be wary when looking at trend data when the definition of the behavior being tracked or the question being asked, has changed.
I absolutely 100% believe we need to move more and sit less and that by doing so, we will be healthier, but come on. If you get up and go to the toilet at night, can you count that too?!? Lowering the standards is not going to reduce chronic illnesses related to sedentary behavior.
