Anyone understand why - Vivosmart 3 vs Fenix 5s and V02 Max

Why is the vivosmart 3 able to calculate V02 Max without gps, but my Fenix 5s can't?

I'm doing great, getting great data from my workouts, but since I am mostly a gym rat, I can't get too much going in terms of V02 max. I constantly get notifications after gym workouts from the training effect that my efforts are improving my V02 max, but my V02 Max never improves (I'm still 79+) because I don't workout outside more than once or twice a week.

The vivosmart doesn't have gps. But it can figure V02 Max? Why can't my Fenix 5s?

0 Former Member over 8 years ago

^ Agreed. I'm 36 and my running max heart rate is ~206. The formulas are useless for me and may or may not be accurate for you, mjsol.

0 mcalista over 8 years ago

Why is the vivosmart 3 able to calculate V02 Max without gps, but my Fenix 5s can't?

I'm doing great, getting great data from my workouts, but since I am mostly a gym rat, I can't get too much going in terms of V02 max. I constantly get notifications after gym workouts from the training effect that my efforts are improving my V02 max, but my V02 Max never improves (I'm still 79+) because I don't workout outside more than once or twice a week.

The vivosmart doesn't have gps. But it can figure V02 Max? Why can't my Fenix 5s?

There is a formula for calculating vo2max from your RHR, which is probably what the vivosmart is using. This is not as accurate as the running speed/HR method of the fenix 5.