Recovery: HRV Norms
Nunan et al. 2010 meta-analysis of 44 studies established RMSSD mean of 42 ms (SD 15 ms) in healthy adults; Sammito & Böckelmann 2016 confirmed male RMSSD declines approximately 1 ms per decade from age 20 onward (PMID 20561700).
| Measure | Value | Unit | Notes |
|---|---|---|---|
| Population mean RMSSD (healthy adults, all ages) | 42 | ms (SD ±15 ms) | Nunan et al. 2010 meta-analysis; 44 studies, healthy adults |
| RMSSD decline per decade (males) | 1 | ms per decade | Sammito & Böckelmann 2016; females show similar age decline but higher absolute values |
| Female RMSSD advantage over age-matched males | 5-10 | ms higher | Consistent finding across studies; hormonal modulation of vagal tone |
| Elite endurance athlete RMSSD (trained males, age 25-35) | 80-120 | ms | Plews et al. 2013; substantially exceeds general population norms |
| Recreational athlete RMSSD advantage over sedentary | 15-25 | % higher | Even 150 min/week of moderate aerobic exercise elevates resting RMSSD measurably |
| RMSSD reduction from single night of poor sleep | 5-12 | ms decrease | Acute sleep deprivation effect; partially recovers with one recovery night |
RMSSD values vary 4-5 fold across healthy individuals, making population norms useful context but a poor basis for individual judgments. Use these tables to understand where you fall relative to population distributions — then prioritize your own 30-day trend for day-to-day decisions.
Table 1: RMSSD Norms by Age Group and Sex
| Age Group | Male Mean (ms) | Male Range (10th-90th %ile) | Female Mean (ms) | Female Range (10th-90th %ile) |
|---|---|---|---|---|
| 20-29 | 47 | 28-75 | 54 | 33-85 |
| 30-39 | 43 | 26-68 | 50 | 31-78 |
| 40-49 | 38 | 23-60 | 45 | 28-70 |
| 50-59 | 33 | 20-52 | 40 | 25-62 |
| 60+ | 28 | 17-44 | 35 | 21-55 |
Values derived from Nunan et al. 2010 meta-analysis (44 studies, healthy adults) and Sammito & Böckelmann 2016 normative dataset (Author et al., 2010 — PMID 20561700; Author et al., 2016 — DOI 10.3934/publichealth.2016.2.460). Short-term 5-minute supine recordings. Wrist-based optical sensors add approximately 3-8 ms measurement noise.
Table 2: RMSSD by Training Status
| Training Status | Typical RMSSD (ms) | Characteristics |
|---|---|---|
| Sedentary (<60 min/week activity) | 25-38 | Low vagal tone; higher resting HR |
| Recreationally active (150-300 min/week) | 38-58 | Moderate aerobic base; normal range |
| Trained (>5 hrs/week structured training) | 55-80 | Elevated vagal tone; lower resting HR |
| Competitive endurance athlete | 70-100 | High parasympathetic dominance at rest |
| Elite endurance athlete | 80-120 | Exceptional vagal tone; may show HRV >100 ms |
Buchheit’s 2014 athlete monitoring framework notes that trained athletes’ higher absolute RMSSD values require proportionally larger absolute deviations (not just percentage changes) to constitute meaningful suppression signals (Author et al., 2014 — PMID 24458556).
How to use this data:
Compare your own 30-day average RMSSD to Table 1 to understand your population percentile. Then use Table 2 to assess whether your value is consistent with your training status. If your RMSSD is consistently below the 25th percentile for your age and sex despite regular aerobic training, investigate sleep quality, total training load, nutrition, and chronic stress before assuming the measurement is your fixed baseline. A 4-6 week dedicated aerobic base block has been shown to lift RMSSD meaningfully in undertrained individuals.
Related Pages
Sources
- Nunan D, Sandercock GR, Brodie DA. A quantitative systematic review of normal values for short-term heart rate variability in healthy adults. Pacing Clin Electrophysiol. 2010;33(11):1407-1417.
- Sammito S, Böckelmann I. Factors influencing heart rate variability. AIMS Public Health. 2016;3(2):460-479.
- Buchheit M. Monitoring training status with HR measures: do all roads lead to Rome? Front Physiol. 2014;5:73.
Frequently Asked Questions
What is a good HRV (RMSSD) score?
There is no universal good score — it depends entirely on age, sex, and training status. A 25-year-old female athlete with an RMSSD of 75 ms is well within her normal range; a 55-year-old sedentary male with 28 ms may also be normal. The Nunan et al. 2010 meta-analysis found a population mean of 42 ms (SD ±15 ms) across healthy adults. Track your own 30-day trend rather than comparing to population tables.
Why do women have higher HRV than men?
Females consistently show RMSSD values 5-10 ms higher than age-matched males across all age groups. The mechanism appears to involve sex hormone modulation of vagal tone — estrogen has been shown to enhance parasympathetic activity. This advantage narrows post-menopause, suggesting hormonal rather than structural origins.
Does HRV naturally decrease with age?
Yes. Sammito & Böckelmann 2016 documented an approximately 1 ms per decade decline in male RMSSD from the 20s onward, with a similar trajectory in females. By age 60, average RMSSD in a healthy but sedentary person may be 25-35% lower than at age 25. Regular aerobic exercise substantially attenuates this age-related decline.
Can I improve my HRV with training?
Yes, particularly with aerobic endurance training. Consistent moderate-to-vigorous aerobic exercise (150+ min/week) increases resting vagal tone and RMSSD over 8-12 weeks. Elite endurance athletes show RMSSD values 2-3 times higher than sedentary age-matched individuals. High-intensity training without adequate recovery can temporarily suppress HRV.
Should I be worried if my HRV is below the population average?
Not necessarily. Population norms are reference frames, not thresholds for action. What matters clinically is your individual trend. A persistently low absolute RMSSD combined with poor sleep, cardiovascular symptoms, or high resting heart rate (>80 bpm) warrants medical evaluation. An RMSSD below the 50th percentile for your age group with no other symptoms is simply your individual baseline.