Illustrative example based on anonymised wearable data. Not a diagnosis.

4 AEVUM · Example record

Example member · female, 56

More movement. Sleep and gait need attention.

30 days of Apple Watch and iPhone data, read against published science — not the device’s own ranges.

13 Sep–12 Oct 2026Apple Watch + iPhoneSource → Evidence → Reading

Step 1 · Source report

What the devices recorded

Steps30/30

Walking speed & asymmetry30/30

HRV27/30

Resting heart rate25/30

Blood oxygen22/30

Breathing rate19/30

Sleep17/30

VO₂ max6 readings

ECG4 readings

Missing days are shown, never filled in.

Step 2 · 4 AEVUM reading

Every measure, against the science

Science benchmarkYour changeDevice noiseHow bigConfidenceWhat helps · recheck

01 · MovementWATCH · Higher than usual

Walking asymmetry

How different left and right steps are, measured by the phone in the pocket; 0% is perfectly even.

5.8%

was 4.5% · +28.6%

Science: No validated population cut-off; compare with own baseline.
Where you stand: Above own previous 30-day average.
Is it real?: Possibly; stayed high, mostly during high-load travel.

30-day trend · gaps kept

What helps

7 days pain-free walking and easy cycling; if knee/hip pain or asymmetry stays, gait-focused physiotherapy.

02 · RecoveryWATCH · Too few nights to judge

Sleep

Time actually asleep, not time in bed.

6.6h/night

was 6.8 · −3%

Science: Adults ≥7 h (AASM/SRS).
Where you stand: Below 7 h on recorded nights.
Is it real?: Cannot tell: 17 of 30 nights recorded.

30-day trend · gaps kept

What helps

Wear the watch 7 nights at home, phone out of the bedroom, 7.5–8 h in bed.

03 · FitnessOK · Middle for women 50–59

VO₂ max

How well the body uses oxygen during effort; watch estimate.

24.5mL/kg/min

was 24.0 · +2.0%

Science: FRIEND registry women 50–59: P25 19.9, P50 23.4, P75 27.6, P90 32.0.
Where you stand: About the 56th percentile.
Is it real?: Not yet: +2% is below the watch’s 3.4% normal variation.

What helps

Two 30–40 min easy bike sessions weekly; later 6×1 min hard/2 min easy.

04 · MovementOK · Improving

Daily steps

How much you move in a day.

7,040steps/day

was 5,748 · +22.5%

Science: Benefit levels off around 8,000–10,000 for adults under 60 (Paluch 2022).
Where you stand: 88% of the lower benefit level.
Is it real?: Yes, clear behaviour change.

30-day trend · gaps kept

What helps

Hold ~7,000 while knee/hip recover, then 8,000.

05 · HeartOK · Within range

Resting heart rate

Heartbeats per minute at full rest; lower usually means a more efficient heart.

74bpm

was 72 · +1.7 bpm

Science: Adult range 60–100; risk rises gradually per +10 bpm (UK Biobank).
Where you stand: Inside range.
Is it real?: No: smaller than ±3.7 bpm device error.

30-day trend · gaps kept

What helps

Easy aerobic movement, sleep, water, less alcohol/stress; judge a 7-day morning median.

06 · RecoveryINFO · Use own trend

HRV

Tiny changes in time between heartbeats; reflects stress/recovery balance.

26.5ms

was 27.7 · −4.1%

Science: No valid population norm for short watch samples.
Where you stand: Compared with own standardised readings.
Is it real?: Not confirmed; time of day and context move HRV.

30-day trend · gaps kept

What helps

One Breathe reading each morning after waking, same position.

07 · MovementINFO · Stable

Walking speed

Comfortable everyday pace from the phone.

3.9km/h

unchanged

Science: Healthy women 50–59 average 4.73 km/h in a timed lab test.
Where you stand: About 18% below lab average; methods differ.
Is it real?: Stable.

30-day trend · gaps kept

What helps

Confirm with a timed 10-m walk ×3.

08 · HeartOK · Within range

Blood oxygen

Oxygen carried in the blood.

95.4%

was 95.0

Science: 94–98% usual clinical target; watch is wellness-only.
Where you stand: Inside range.
Is it real?: No meaningful change.

30-day trend · gaps kept

What helps

Nothing to optimise.

09 · RecoveryOK · Within range

Breathing rate at night

Breaths per minute during sleep.

14.4/min

was 13.7

Science: Resting adults 12–20.
Where you stand: Inside range.
Is it real?: Probably not meaningful.

30-day trend · gaps kept

What helps

No action.

10 · HeartOK · Sinus rhythm

Heart rhythm (ECG)

A 30-second rhythm recording; “sinus rhythm” means a normal, regular heartbeat.

4/4normal recordings

Science: The watch classifies one 30-s single-lead recording.
Where you stand: All four recent recordings normal.
Is it real?: Reassuring snapshots, not continuous monitoring.

What helps

Record an ECG if you feel palpitations.

Step 3 · Day by day

The days behind the averages

Daily steps

steps

13 Sep–12 Oct 2026 · Travel: 29 Sep–10 Oct · Gaps = no recording

Sleep

13 Sep–12 Oct 2026 · Travel: 29 Sep–10 Oct · Gaps = no recording

Walking asymmetry

13 Sep–12 Oct 2026 · Travel: 29 Sep–10 Oct · Gaps = no recording

Resting heart rate

bpm

13 Sep–12 Oct 2026 · Travel: 29 Sep–10 Oct · Gaps = no recording

What if · illustrative

Where would a different number sit?

Daily steps

7,040steps/day

Now: 7,040 steps/day

3,00012,000

88% of the 8,000 level where the benefit starts to level off.

Sleep

6.6h/night

Now: 6.6 h/night

0.4 h short of the 7-hour adult recommendation.

VO₂ max

24.5mL/kg/min

Now: 24.5 mL/kg/min

1834

Women 50–59: about the 57th percentile.

Too small to show above watch variation.

Resting heart rate

74bpm

Now: 74 bpm

5590

Inside the 60–100 adult range.

Within watch error (±3.7 bpm).

Shows position against the same benchmark only. It does not predict health outcomes or biological age.

Confirm, then compare

How to confirm what matters

01 · next 7 nights

Sleep

Wear the watch every night at home.

02 · 2–4 weeks

Gait

Timed 10-m walk ×3, physiotherapy if pain stays.

03 · 8–12 weeks

Fitness

Two easy bike sessions weekly, lab test (CPET) to confirm.

04 · 14 days

Recovery

One morning reading, compare 7-day medians.

05 · 3–6 months

Strength

Grip strength and five chair stands.

Evidence library · 16 sources

Evidence tiers in this example: A · population research / B · guidelines or device validation / C · contextual or individual-trend evidence. A benchmark is not a diagnosis; device methods and study populations may differ.

Source	Evidence	Publication / context
S01	FRIEND CPET standards	Kaminsky · 2015
S02	Apple VO₂ white paper	Apple · device methodology
S03	Apple VO₂ accuracy	PLOS ONE · 2025
S04	AASM/SRS sleep recommendation	2015
S05	Wearable measurement accuracy	O’Grady · Sensors · 2024
S06	Wearable measurement variation	O’Grady · Sensors · 2024
S07	ESC/NASPE HRV standards	1996
S08	UK Biobank resting heart rate	Petersen · 2020
S09	Apple Blood Oxygen support note	Apple · wellness limitations
S10	Oxygen guideline	British Thoracic Society
S11	Respiratory rate	American Lung Association
S12	Daily steps and mortality	Paluch · Lancet Public Health · 2022
S13	iPhone mobility white paper	Apple · mobility methodology
S14	Normal walking speed	Bohannon & Andrews · 2011
S15	ECG instructions for use	Apple
S16	EWGSOP2 strength assessment	Cruz-Jentoft · 2019

4 AEVUM organises and explains evidence. It does not diagnose, treat or predict lifespan.

Example member · female, 56