R-R Intervals / Online HR Variability Measures your heartbeat intervals & reflects autonomic nervous system activity in heartbeat regulation. The R-R interval measurement is most useful at rest & at low intensities. Relaxation rate indicates the state of your physical recovery. Running Index (optional
- only with S3 or G3 sensors) Based on heart rate & speed data measurement during the run. Running Index is based on heart rate & speed data measured during the running exercise. It gives daily information about the runners performance level, both aerobic fitness & running economy. Improvement in running efficiency indicates enhanced economy of running performance. Polar Fitness Test with Own Index Measures your fitness level in 5 minutes. A fitness test that measures your aerobic/cardiovascular fitness at rest in just five minutes. The result, Polar Own Index, predicts your maximal oxygen uptake (V02max). With the Polar Fitness Test you can measure your aerobic fitness by yourself, automatically & without any exertion. No other equipment other than a heart rate monitor is needed. The Polar Fitness Test is as accurate in predicting the VO2maxas any sub-maximal fitness test. The test is based on gender, age, height, body weight, level of physical activity, heart rate & heart rate variability at rest. The Own Index ranges usually from 20 to 95 & is comparable to VO2max, the golden standard of aerobic fitness. Own Index is most meaningful when following changes in your fitness over a long period of time. Find out how fit you are for your age & gender by comparing your result to the global references listed in the Polar user\ s manuals. Interval trainer (hr, pace distance) guided workouts Create your personal multizone workouts with heart rate/speed/distance & timing guidance. means that you can create & name your own favorite workouts based on time, heart rate, speed/pace or distance guidance with up to three linked timers or distances & up to three target zones. Polar sport zones Helps you to train at the right intensity. Polar sport zones provides an easy way to select & monitor the intensity of your training & to follow Polars sport zones based training programs. The training is divided into five zones based on percentages of your maximum heart rate: very light (50-60%HRmax), light (60-70% HRmax), moderate (70-80%HRmax), hard (80-90% HRmax) & maximum (90-100% HRmax). Zone Pointer Makes it easy to stay in your target zone. A visible & moving symbol on the display of your Polar product indicating that you are inside the pre-set target zone. Zone Lock Simply the easiest way to set a target zone. You can activate a target zone with a press of a button during your run. You can also deactivate the zone alarm just as easily by pressing a button. Event Countdown Timer Set your goal & stay motivated. Keeps your motivation high by showing how many days are left before your next running event (e.g. Berlin 23 days)