Science May 23, 2023

Get Fitter

CAROL Bike increases the maximum amount of oxygen you are able to use during exercise – your VO2max – by 12%.

Get Fitter

VO2max is the main measure of fitness. The higher your VO2max, the fitter and healthier you are.

A study by Western Colorado University split participants into 2 groups. Group 1 did 3x short Reduced Exertion HIIT (REHIT) workouts on a CAROL Bike each week; while Group 2 did 5x 30-minutes of moderate-intensity continuous training.

In just 8 weeks, the CAROL Bike group increased their VO2max by 12.3%, the other group by only 6.9%. That’s close to double the improvement—in 90% less time.

Western Colorado University · 8 weeks

VO2max gain, REHIT on CAROL Bike vs moderate cardio

CAROL Bike3 short REHIT rides a week
+12.3%
Moderate cardio5 × 30 minutes a week
+6.9%

Bars are scaled to the larger gain. Close to double the improvement, from 90% less training time.

Read the full study here.

Listen to CAROL co-founder, Ulrich Dempfle, explain how CAROL Bike gets you fit, fast.