Aerobic fitness levels are a relatively reliable indicator of overall physical health and a good predictor of long-term health. So, aerobic fitness measures VO 2 max, the maximum amount of oxygen the body can consume during exercise. Apple Watch estimates your aerobic fitness by measuring how hard your Heart is working when you walk, run, or hike.
If your aerobic fitness levels are low for your age and gender, you’ll receive a notification. If the stories are still familiar, you will receive additional information.
Most people can improve their VO 2 max by increasing the intensity and frequency of their cardiovascular exercise. Some diseases or medications that slow the heart rate can cause an overestimation of VO 2 max.
When we carry out exercise or physical activity, we commonly hear the term aerobic Fitness. However, many people find it challenging to recognize what [aerobic fitness] is, how it differs from anaerobic fitness and the importance of improving it to reduce tiredness or fatigue after physical activity.
In this sense, aerobic resistance is recognized as the fitness of the cardiovascular system to work efficiently when performing physical activity, specifically when it is a reduced effort for a prolonged period.
For this reason, aerobic fitness is related to oxygen consumption and its transport and exchange in the cardiovascular and circulatory systems. This occurs when an effort is made that implies greater oxygen consumption.
Among the main characteristics of [aerobic fitness], we can find:
[Tap Heart, then [the Aerobic]
[Tap D, S, or A to see your daily, weekly, or yearly average.
Tap Show all [aerobic fitness levels.]
Touch a level to compare your results with other classes based on age and gender.
You can also tap the Show Info button at the top right to see the average [aerobic fitness] levels for women, men, or all ages.
Apple Watch Series 3 and later models use heart rate and motion sensors to record an estimate of VO 2 max while you walk, run, or hike. They can also estimate your VO 2 max in the Training app if you start walking, running or hiking. Apple Watch supports a VO 2 max range of 14-65 mL/kg/minute, validated for users 20 years and older.
To estimate your [aerobic fitness] level, Apple Watch also takes the following into account:
You may need to wear your Apple Watch for at least 24 hours and take multiple workouts* and prior passive measurements to receive an initial estimate.
If the Health app detects that your previous[ aerobic fitness] estimates could be more accurate, you can update your data. Under Fitness,] tap Update under Update your data. Once done, the “Updated Cardiovascular Fitness Data” notification shows you the updated results and how your estimates have changed.
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