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Chronological Age and Biological Age: You may be younger or older than you think

You have a chronological age determined by the calendar whose birthday you are likely to celebrate every year. But you also have a biological age based on the age of your body systems. Her biological age is not fixed. On the contrary, it is influenced by your lifestyle habits on a daily basis, including your physical activity, diet, stress, sleep, etc.

How your body and mind function in your 60’s, 70’s, 80’s and beyond depends a little on genetics and a large part on your lifestyle choices, particularly those that have been in place for many years. . Because of this, you may be younger or older than your chronological age would suggest. To find out where you stand on the scale, simply measure your fitness age. Your fitness age contributes to your biological age. It is considered a better indicator of longevity than chronological age.

How is fitness age measured and what does it say about your life expectancy?

Fitness Age is based on the concept of VO2max, which is the maximum amount of oxygen you can use during physical activity. VO2max can be used as a measure of your cardiovascular endurance. If yours is below average compared to others your age, it means your fitness age is above your chronological age. Conversely, an above-average VO2max could mean your fitness age is younger than your age in years.

Even better, it’s possible to improve your VO2max, which means your fitness age may actually decrease as you get older. The main problem with VO2max as a method of estimating longevity is that few people know theirs, and determining it requires it usually a lot of time. Tech testing on a treadmill.

An algorithm based on the study of 5,000 people and tested on 55,000 adults

However, researchers from the Norwegian University of Science and Technology were able to develop an algorithm based on the aerobic capacity, waist circumference, heart rate and physical activity habits of nearly 5,000 people. This led to a method for fairly accurately estimating a person’s VO2max.

The researchers then set out to determine whether VO2max actually correlates with life expectancy. They analyzed the VO2max, fitness age and chronological age of over 55,000 adults and found a strong association. People with the worst VO2max scores (85% or more below their average age, meaning they were of a high fitness age) had an 82% greater risk of premature death than people whose fitness age was the same or even lower than her chronological age. The authors consider fitness age to be a better predictor of premature death than risk factors such as obesity, high blood pressure or smoking.

Senior athletes have incredibly young fitness ages

If you need motivation to get moving, consider this: when researchers measured the fitness age of athletes who competed in the National Senior Games (or Senior Olympics), they found that older was several decades younger than their chronological age. dr Together, Pamela Peeke, Assistant Professor of Medicine at the University of Maryland, and Ulrik Wisloff, Professor at the KG Jebesen Center for Exercise in Medicine at the Norwegian University of Science and Technology, who led the study in question, we determined how lifestyle affects Age affects physical health.

They measured the physical health age of more than 4,200 senior athletes. While the chronological median age was 68 years, the median fitness age was 43 years. dr Wisloff told The New York Times, “It’s a huge difference … I expected there would be a huge difference because these guys have been training for years. However, I was surprised that it was so important. »

Just enter a few details (e.g. your age, gender, waist size, height and physical activity habits). The algorithm estimates your fitness level and tells you both your VO2max and fitness age.

* Presse Santé strives to convey health knowledge in a language accessible to all. In NO CASE can the information given replace the advice of a doctor.

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