Heart Rate Variability 101
[Pages:16]Heart Rate Variability 101 An Introduction to HRV and Interpreting SweetBeat HRV Graphs and Numbers
SweetWater Health TM
BeatHealthyTM
August 2013
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SweetBeat Display Description
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SweetBeat "Stats for Nerds"
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HRV Interpretation
HRV can vary greatly from person to person depending on health and fitness HRV can vary greatly for an individual from day to day and even hour to hour While there are "average HRV values" determined through clinical research, HRV
is dynamic and individuals will tend to have their own range
? Scroll down to see charts of "average HRV values" from some research papers
Some athletes have HRV values that are magnitudes higher than average persons SweetBeat is about understanding and managing the nervous system and
not intended to diagnose anything. If you feel your HRV is "low" see your doctor Athletes use HRV to guide training ? As seen on the next 2 charts, HRV power levels vary quite a bit ? The elite athlete has LF and HF power that are orders of magnitude higher than
average ? Don't be alarmed if your HRV values are closer to average
HRV for Training Example Elite Athlete
14000 12000 10000
8000 6000
LF vs. HF Elite Athlete
Day of first race high cortisol measure day before
Tuesday after race high cortisol measured
LF HF
4000
2000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
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HRV for Training Example Fitness Enthusiast
6000.00
LF vs. HF Fitness Enthusiast
5000.00
4000.00
3000.00
LF
HF
2000.00
1000.00
0.00 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
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Average HRV Ranges
Gender Male Female Male Female Male Female Male Female
Age 10-29 30-49 50-69 70-99
Average SweetBeat HRV
72.29827 67.68875 62.51162 60.47521 52.91486
55.733 52.91486 52.91486
Average LF
Average HF
Male Female
Male Female
20's
30's
40+
1480
678
212
804
336
330
925
314
131
528
311
156
Source:
Values based on 24 hour measurements
HRV represents rMSSD scaled to a value between 0 ? 100 and is SweetBeat specific
Source: Values based on 5 minute measurements
Coherence
Many SweetBeat customers use HeartMath coherence training techniques ? excellent!
Coherence is associated with a "spike" at 0.1hz frequency There are industry standards for LF and HF frequency ranges
? LF = 0.04hz - 0.15Hz ? HF = 0.15hz ? 0.4hz
Stress is associated with a high LF with respect to HF (high LF/HF ratio). Because coherence is associated with a high power spike at 0.1hz, which falls into the HRV definition of LF, coherence shows as high stress in SweetBeat.
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