What’s your fitness age?
YOU already know your chronological age, but do you know your fitness age?
A new study of fitness and lifespan suggests that a person’s socalled fitness age – determined primarily by a measure of cardiovascular endurance – is a better predictor of longevity than chronological age.
The good news is that unlike your actual age, your fitness age can decrease.
The concept of fitness age has been developed by researchers at the Norwegian University of Science and Technology in Trondheim, who have studied fitness and how it relates to wellness for years.
Fitness age is determined primarily by your VO2max, which is a measure of your body’s ability to take in and utilize oxygen. VO2max indicates your current cardiovascular endurance.
It also can be used to compare your fitness with that of other people of the same age, providing you, in the process, with a personal fitness age.
If your VO2max is below average for your age group, then your fitness age is older than your actual age. But if you compare well, you can actually turn back the clock to a younger fitness age.
That means a 50-year-old man conceivably could have a fitness age between 30 and 75, depending on his VO2max.
Knowing your fitness age could be instructive and perhaps sobering, but it also necessitates knowing your VO2max first, which few of us do. Precise measurement of aerobic capacity requires high-tech tread- mill testing.
To work around that problem, the Norwegian scientists decided several years ago to develop an easy method for estimating VO2max.
They recruited almost 5 000 Norwegians between the ages of 20 and 90, measured their aerobic capacity with treadmill testing and also checked a variety of health parameters, including waist circumference, heart rate and exercise habits.
They then determined that those parameters could, if plugged into an algorithm, provide a very close approximation of someone’s VO2max.
But while fitness age may give you bragging rights about your youthful vigor, the real question is whether it is a meaningful measurement in terms of longevity.
Will having a younger fitness age add years to your life? Does an advanced fitness age mean you will die sooner?
The original Norwegian data did not show any direct correlation between fitness age and a longer life.
But in a new study, which was published in June in Medicine & Science in Sports & Exercise, the scientists turned to a large trove of data about more than 55 000 Norwegian adults who had completed extensive health questionnaires beginning in the 1980s.
The scientists used the volunteers’ answers to estimate each person’s VO2max and fitness age. Then they checked death records. It turned out that people whose calculated VO2max was 85 percent or more below the average for their age — meaning that their fitness age was significantly above their chronological years — had an 82 percent higher risk of dying prematurely than those whose age was the same as or more youthful than their actual age.
According to the study’s authors, the results suggest that fitness age may predict a person’s risk of early death better than some traditional risk factors like being overweight, having high cholesterol levels or blood pressure, and smoking.
Of perhaps even greater immediate interest, the scientists used the data from this new study to refine and expand an online calculator for determining fitness age. An updated version went live this month.
it asks only a few simple questions, including your age, gender, waist size and exercise routine, before providing you with your current fitness age.
(I discovered my own fitness age is 15 years younger than my chronological age — a good number but still not as low as I could wish.)
Thankfully, fitness age can be altered, said Ulrik Wisloff, professor at the KG Jebsen Center for Exercise in Medicine at The Norwegian University of Science and Technology, who led the study.
His advice if your fitness age exceeds your chronological years or is not as low as you would like? “Just exercise.”
But he said almost any type and amount of exercise should help to increase your VO2max and lower your fitness age, potentially increasing throughout the day. Comparing two individuals of similar weight, the person with the larger amount of muscle will generally have the faster metabolism.
This is just one of the reasons it’s important to pair any weight loss program with a proper strength training plan. Research has found the extra muscle can help accelerate weight loss much faster than a diet-only plan.
While body size does factor in, body composition has a far greater effect on metabolism. Myth #2: Skipping a meal slows down
your metabolism. Anyone looking to drop a few pounds better be grazing on frequent meals and snacks throughout the day right? Turns out the old notion of eating a meal every three to four hours to ramp up one’s metabolism wasn’t exactly perfect advice.
In fact, how frequently someone eats has little to do with the speed of their metabolism. Freedhoff explains, “Eating every four hours is popular because eating frequently, for many, helps them to keep a lid on both stomach hunger as well as cravings.” That, in turn, allows for better portion and choice control, Freedhoff says.
Certain individuals (those prone to cravings or with special dietary needs) may benefit from consuming multiple meals through your lifespan.
In upcoming studies, he added, he and his colleagues will directly compare how well fitness age stacks up against other, more established measures of mortality risk, like the Framingham Risk Calculator (which does not include exercise habits among its variables).
They also hope to expand their studies to include more types of participants, since adult Norwegians may not be representative of all of the world’s population.
But even in advance of this additional data, there is no harm in learning and lowering your fitness age, Dr. Wisloff advised.
“There is a huge benefit,” he said, “larger than any known medical treatment, in improving your fitness level to what is expected for your age group or, even better, to above it.” NY Times later use, including carbohydrates and fats. A properly functioning metabolism is a delicate balance of both functions.
Metabolism consists of both breaking things down and building things up; both are vital to our health.
Fitness age is determined primarily by your Vo2max
Consuming water may have a positive impact on how many calories you burn throughout the day