Polar CS400 user manual U S T O M E R S E R V I C E I N F O R M At I O N, Heart Rate Variability

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Polar CS400 User Manual

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Target intensity 70 % HRR for a person with HRmax 201 bpm and HRrest 50 bpm

Exercise HR= 70% (201-50) + 50

Exercise HR=156 bpm

For a precise exercise heart rate, you need your exact HRmax and HRrest. When using estimated HRmax, exercise heart rate values are always estimates.

*In Polar CS400 and CS600 cycling computers, the heart rate value during a resting state is measured in a sitting position (HRsit). This is for practical reasons since HRsit is used in energy expenditure calculation because of accuracy. HRsit matches the low intensity to which different exercise intensities can be compared.

**Karvonen M, Kentala K, Mustala O. The effects of training on heart rate: a longitudinal study. Ann

Med Exp Biol Fenn 1957; 35: 307-315.

Heart Rate Variability

Heart rate varies with every heartbeat. Heart rate variability (HRV) is the variation of beat-to-beat intervals, also known as R-R intervals.

HRV indicates the fluctuations of heart rate around an average heart rate. An average heart rate of 60 beats per minute (bpm) does not mean that the interval between successive heartbeats would be exactly 1.0 sec, instead they may fluctuate/vary from 0.5 sec up to 2.0 sec.

HRV is affected by aerobic fitness. HRV of a well-conditioned heart is generally large at rest. Other factors that affect HRV are age, genetics, body position, time of day, and health status. During exercise, HRV decreases as heart rate and exercise intensity increase. HRV also decreases during periods of mental stress.

HRV is regulated by the autonomic nervous system. Parasympathetic activity decreases heart rate and increases HRV, whereas sympathetic activity increases heart rate and decreases HRV.

HRV is used in the Ownzone and OwnIndex features.

Polar Article Library

For more facts and know-how to enhance your cycling, visit Polar Article Library [http://articles.polar.fi/en/1_segment.html].

1 1 . C U S T O M E R S E R V I C E I N F O R M AT I O N

Care and Maintenance

Caring of Your Product

Like any electronic device, the Polar cycling computer should be treated with care. The suggestions below will help you fulfill guarantee obligations and enjoy this product for many years to come.

Detach the transmitter connector from the strap after use. Clean the connector with a mild soap and

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Contents Polar CS400 Contents View Program Perform Programmed Exercise Watch SettingsCare and Maintenance PrecautionsPage Measuring Wheel Size Basic SettingsWheel size diameter inches Wheel size setting mm E T T I N G S TA R T E DSex Select Male or Female Exercise Types R E P a R E F O R T R a I N I N GMenu Structure Plan your trainingCreate a New Exercise with Zones Create New Exercises With Your Cycling ComputerCreate a New Exercise Without Zones Create New Exercises with Polar ProTrainer R a I N I N GWear the Transmitter Start TrainingInformation on the Display Graph view Text on the display Symbol Symbols on the DisplayButton Functions During Exercise Take a LapLock a Zone Pause Exercise Illuminate the Display Night mode onView Settings Menu Zoom the DisplayExercise Log F T E R T R a I N I N GStop Exercise Analyze Exercise ResultsBasic information Bike information Additional Basic InformationSport Zones Phases Laps Weekly Summary Feature Settings E T T I N G SExercise types Calibrating the Altitude Automatically Recording RateHeart Rate View Bike SettingsUsing the HeartTouch Function CS400 Automatic Lap RecordingSpeed On / Off Wheel SizeAutostart On / Off Arrival timeMaximal Oxygen Intake VO2max User SettingsGeneral Settings Heart Rate HRmax, HRsitWatch Settings Alarm EventTime View Program R a I N I N G P R O G R a MPersonalize the Cycling Computer Display Shortcut Button Quick MenuTo view your weekly program To view your daily programView your daily exercise Views during the exercise Exercise with PhasesPerform Programmed Exercise Start ExercisingLap Menu E S T SPolar Fitness Test Functions During ExerciseEnter User Information Before the TestPerforming the Test Wear the TransmitterAfter the Test Fitness Level ClassesFitness Test Trend Analyzing OwnIndex Results with Polar ProTrainer 5 Software A C K G R O U N D I N F O R M AT I O NPolar Sport Zones Delete OwnIndex ValueLight OwnZone TrainingDetermining Maximum Heart Rate Maximum Heart RateHeart Rate Value in a Sitting Position Heart Rate ReservePolar Article Library Care and MaintenanceU S T O M E R S E R V I C E I N F O R M AT I O N Heart Rate VariabilityChanging Batteries ServiceChanging Cycling Computer Battery Store the strap and the connector separatelyElectromagnetic Interference and Exercise Equipment PrecautionsSpeed and Cadence Sensors Battery Interference During ExerciseMinimizing Risks When Exercising Technical SpecificationsCycling computer limit values Cycling computer does not measure the calories? Frequently Asked QuestionsDo not know where I am in the menu? There are no reactions to any buttons?Memory low is displayed? Limited Polar International GuaranteeAltitude keeps changing even if I am not moving? …the altitude readings are inaccurate?Polar Disclaimer Index