What Is a Good VO2 Max for My Age?

Articles · VO₂ max guides

What VO₂ max actually measures

VO₂ max (maximal oxygen uptake) is the highest rate at which your body can use oxygen during intense exercise. It is expressed in milliliters of oxygen per kilogram of body weight per minute (ml/kg/min). Higher values generally mean a stronger aerobic engine—better endurance, faster recovery, and, as longevity experts like Peter Attia emphasize, a meaningful marker for healthspan.

Your number depends on genetics, age, sex, and training history. It declines with age unless you train it deliberately. Structured HIIT—especially the research-backed Norwegian 4x4 protocol—is one of the most efficient ways to push it upward.

How to read your number

• Below average — room for improvement; consistent training can move you a full category in months.
• Average — typical for untrained or casually active adults your age.
• Good / excellent — regular endurance or interval training; often seen in dedicated amateur athletes.
• Elite — competitive athlete territory; not required for longevity benefits.

Use our free heart rate calculator to find work (85–95% HRmax) and recovery (60–70% HRmax) zones for Norwegian 4x4 sessions once you know your age-based HRmax estimate.

VO₂ max reference chart by age and sex

The table below shows approximate population averages for average (50th percentile) and good (75th percentile) VO₂ max in ml/kg/min. These are general fitness references—not medical cutoffs. A cardiopulmonary exercise test (CPET) in a lab remains the gold standard; wearable estimates are useful for tracking trends.

Age	Men (avg)	Men (good)	Women (avg)	Women (good)
20–29	44	50	37	43
30–39	41	47	34	40
40–49	38	44	32	37
50–59	35	41	29	34
60–69	32	37	27	31
70+	28	33	24	28

Sources: general population fitness norms (ACSM / Cooper Institute style references). Individual genetics, training history, and altitude affect your number.

How to improve your VO₂ max

If your wearable or lab test puts you below the "good" column for your age, don't panic—VO₂ max is highly trainable. NTNU research on four-minute intervals showed meaningful cardiovascular gains in weeks, not years. Most people doing 2–3 Norwegian 4x4 sessions per week notice better pace at the same heart rate within 4–12 weeks.

For a deeper dive on measurement methods, see our VO₂ max training guide and the researchers behind the protocol on our NTNU research page.

Why VO₂ max matters beyond athletics

Endurance athletes obsess over VO₂ max because it predicts race performance. For everyone else, it still matters: large epidemiological datasets link higher cardiorespiratory fitness to lower all-cause mortality. You do not need elite numbers—a shift from below average to good for your age group captures much of the longevity benefit discussed on our Peter Attia resource page.

VO₂ max also tracks with everyday capacity: climbing stairs without breathlessness, keeping up with kids, recovering quickly between efforts. When it drops—often silently with desk jobs and age—you feel it as reduced energy, not as a lab value.

Lab test vs wearable vs field test

Lab CPET measures gas exchange directly; cost and access limit repeat testing. Wearables estimate from sub-maximal outdoor efforts; read Apple Watch vs Garmin accuracy before treating a single reading as gospel. Field tests during Norwegian 4x4—same route, same work interval HR—give free, repeatable feedback weekly.

If you are starting from sedentary, expect larger jumps in the first 8–12 weeks. If you already train five days per week, gains come slower and may require adding focused 4x4 dose rather than more easy volume. Pair testing logic with realistic timelines so you do not quit during a normal plateau.

Putting the chart into action

Find your age row and sex column. If you are below "average," prioritize consistency: two beginner 4x4 sessions weekly plus daily walking. If you are average and want "good," add a third interval day or extend one Zone 2 session for aerobic base.

Retest informally every 8 weeks—same treadmill incline, same average work-interval HR, or wearable trend line. Celebrate process metrics (completed sessions, recovery HR) not just ml/kg/min. The Norwegian 4x4 app logs intervals so you can correlate training blocks with fitness changes over time.

Women-specific considerations

Women typically show lower absolute VO₂ max values than men at the same age due to hemoglobin, heart size, and body composition differences—not lower fitness potential. Compare yourself to female norms in the chart, not male training partners. Hormonal shifts across the menstrual cycle can shift HR at a given pace by 5–10 bpm; track trends across cycles rather than day-to-day.

Integrating Norwegian 4x4 with your chart result

Once you know where you sit on the chart, translate that into action. Below-average trainees should run an 8-week block of two weekly 4x4 sessions before retesting. Average trainees aiming for "good" should add a third session or pair 4x4 with weekly Zone 2 volume. Already "good"? Maintenance requires at least one weekly hard aerobic session; fitness detrans quickly when intensity disappears entirely.

Log each session in the Norwegian 4x4 app: average work-interval HR, modality, and RPE. Over 8 weeks the log becomes a personal case study more valuable than any single lab number. Share trends with your physician if you manage hypertension, diabetes, or cardiac history—they often encourage VO₂ max improvement when progression is gradual and monitored.

Frequently Asked Questions

Ready to train smarter? Download the Norwegian 4x4 Protocol App for guided 4-minute intervals, heart-rate zones, and progress tracking. Get the app, see how it works, or start with our beginner's guide.

Last Updated: June 9, 2026

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