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RR-I means the time in millisecond between two consequent heart beats.
That is the only input that heart rate monitors takes out from the heart.
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This is exactly what I said in my second post glad you can see my point.
To discuss what and how the
suunto use this rr interval there are still many unanswered questions in my posts. I will put them to you again
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measuring heart rate responses many times per second
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so how many times per second do the
suunto watches measure heart rate.
Answer : The same number of times any other heart rate monitor company does like cardiosport or polar nothing unique with
suunto.
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EPOC accumulation is based on intensity and duration as mentioned in the post but also includes a variable for Heart Rate Variation (time between heart beats) which can impact the accumulated EPOC
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so how do the
suunto measure EPOC using heart rate variability
Answer: rrintervals or in other words the heart rate is averaged over a 5 minute period and the average RR Interval is taken to calculate epoc. beat to beat heart rate variability is thus neutralised.
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a method has been established for indirectly assessing a patient's maximum oxygen uptake by computing the standard deviation of five minute mean RR intervals, i.e., the SDANN Index.
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However, RR-I provides more information than just the pure heart rate.
When analyzing the changes in RR-I times (heart rate variability, HRV), it is possible to detect different frequency bands (high, low, very low).
These spectral components are the “subunits of the variation in RR-intervals and they provide information on respiration rate, ventilation, oxygen consumption etc.
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The resting membrane potential of a cell is around -60mV. mv standing for milivolts i.e voltage when you say different frequency
bands what do you mean. Can you define what we are measuring here as frequency
bands can mean anything including aliens sending us signals from outer space.
How a cell depolarizes and repolarizes is important to understand so i suggest you read up on action potential.
Action potential - Wikipedia, the free encyclopedia
I have read the literature i.e firstbeat technologies. some of what they say contradicts what you say.
Pre-prediction of EPOC: A tool for monitoring fatigue accumulation during exercise? by H. Rusko, presented in ACSM Congress, San Francisco, May 28-31, 2003.
CONCLUSIONS
(1) EPOC can be pre-predicted from data recorded during
exercise.
(2) Only RR-interval measurement is needed for the preprediction.
(3) If blood lactate concentration and actual EPOC can be
regarded indicative of fatigue accumulation during
exercise then the RR-interval based calculation of
EPOCpred can be used as a tool for monitoring the
accumulation of fatigue during exercise.
(4) Requiring only RR-interval (heart rate) monitoring
EPOCpred is especially suitable for field use.
(5) The accuracy of the present system can be improved by
taking into consideration the individual differences in
the relation between fatigue accumulation and the relative
exercise intensity.
As above.
For me going through the literature the
suunto watches with their TE or EPOC donot offer anything as the individual variations are vast and one is better off sticking to their heart rate i.e rr interval and seeing which zone they are in and working on that. Than relying on approximations made for them by
suunto.
The
suunto lack one key feature which i was looking for that is recovery to a preset resting heart rate. which will tell you how long you take to get back to a particular resting heart rate you have set after a bout of activity which will give you a good idea of how fit you are getting.
I started off trying to convince myself that the
suunto was the best and ending up with a cardiosport GT5 and I have no regrets it is simply cool.