Exercise mode: The stopwatch is on and your exercise is recorded. You can select between the BasicUse, Interval Training Set and BasicSet.

Interval training: Seeks to improve your race pace with different periods of work and rest.

Maximal oxygen uptake: (maximal aerobic power, VO2max)

Is the maximal rate at which oxygen can be used by the body during

maximal work. VO2max is a good index of aerobic fitness.

Maximum heart rate: (HRmax) Is the highest number of heart beats per minute of a person.

Measure mode: Measuring your heart rate without recording the exercise.

Summary file: Presents the main information of your exercise.

Target heart rate zone: The area between the upper and lower target heart rate limits. Target zone selection is based on personal fitness goals.

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Polar S210, S410 user manual Maximal oxygen uptake maximal aerobic power, VO2max