ECG Fitness Report
Sample participant / Synthetic demonstration data / 120s recording
No participant data. Values demonstrate report output, not a health assessment.
Sample report
ECG WAVEFORM PREVIEW · 130 Hz
Synthetic trace and example metrics; not measured from a person.
Age: 35 yrs
Sex: Female
Activity: Moderate
HR: 65 bpm
Breathing: 14.0 /min
Confidence: 90%
Fitness overall score
54
Above Average autonomic fitness
Composite score uses age/sex-adjusted RMSSD percentile and resting HR, adjusted by signal confidence. SDNN is shown as context only because short-duration percentile interpretation is weak. Fitness use only; not a clinical diagnosis.
Fitness pillars
Heart rate variability (RMSSD)
41 ms
Female · age 35
55th percentile · Above average
Peer median: 37.9 ms · Delta: +3 ms
Cardiac efficiency - resting heart rate
65
bpm - beat interval 923 ms
Good
Elevated>=90 bpm Fair80–89
Normal70–79 Good60–69
Excellent50–59 Athlete<50
Fixed resting HR zones used for the score.
Autonomic pattern
Healthy autonomic tone
Both metrics are in a healthy range for healthy adults at rest. Autonomic balance is well-maintained.
What to do: Regular aerobic exercise (3-4x/week) and consistent sleep timing are the two most evidence-backed improvements for both metrics.
At a glance
RMSSD percentile
55th
Above average
RMSSD
41 ms
+3 ms vs median
Resting HR
65 bpm
Good
Pattern grid
RMSSD / HR
Athlete
Excellent
Good
Normal
Fair
Elevated
Elite
Strong
Good
Average
Below
Low
Highlighted cell: Good RMSSD tier with Good resting HR zone.
RMSSD percentile - Female, age 35
RMSSD 41 ms Above average · 55th percentile
Low (2nd)Median (50th)High (98th)
Published median: 37.9 ms · +3 ms vs median
HRV age estimate
HRV age estimate — Younger than expected
Normalized HRV adjusts RMSSD for mean R-R interval, then compares ln(normalized HRV) with age and sex reference bands. Your profile resembles the 30-34 band; confidence is low. This is a rough wellness indicator, not a diagnostic age estimate.
About these metrics
RMSSD - root mean square of successive differences
A marker of parasympathetic activity and recovery capacity. Compare trends over repeated morning measurements rather than overreacting to one reading.
SDNN - standard deviation of NN intervals
Captures total variability in detected beat intervals. It is included as context, but no percentile or score contribution is assigned because short-duration recordings do not provide strong evidence for stable SDNN ranking.
Breathing rate - ECG-derived respiration
Estimated from ECG-derived respiration using heart-rate modulation, then summarized as breaths per minute. This is a proxy, not a direct respiratory belt or airflow measurement.
Recording data
MetricValueReferencePercentile
Fitness score5470% RMSSD percentile + 30% HR scoreAbove average
Heart rate65 bpmClinical resting HR zonesGood
R-R interval923 ms600-1000 ms normal-
RMSSD41.0 msAge/sex adjusted (Tegegne 2020)55th (Above average)
SDNN55.0 msContext metricNot scored
Normalized HRV1.349RMSSD / sqrt(mean R-R)57th (Above average)
Breathing rate14.0 breaths/min12-20 restingECG-derived
Analysis confidence90%Higher is better-
Sample rate130 Hz250 Hz preferred-
Recording duration120.0 s>=60 s for reliable RMSSD-
Recommendations
SAMPLE ONLY. Generated with synthetic inputs using Sentinan's current event-report template. Event referrals are omitted and recommendations adapted for this public example. Scores and interpretations are software outputs, not evidence of clinical validation. For wellness demonstration, not diagnosis or personal medical advice.