Biomarkers · Functional Fitness
Daily Step Count
Higher values go with lower risk of death. Not measured in our NHANES panel. The curve is drawn from the published study (source below).
Daily Step Count and risk of death
Published curve higher than the NHANES fitNHANES fit higher
Risk of death relative to the curve's reference value, drawn from the published study (source below).
What studies found when this marker was changed
They describe what happened in those study groups, not a recommendation. See all catalogued interventions.
Measured changes in Daily Step Count, study by study
4 effects with a numeric size, each from one study arm: the dot is the reported change, the line its 95% interval where one was given. Green points move the marker the way lower risk of death lies; amber the other way. Study results in the groups studied, not predictions for a person.
| Type | Intervention | Reported effect | Evidence | Source |
|---|---|---|---|---|
| behavioral | 12-week step-activity monitoring behavioural intervention with daily feedback, skilled coaching and progressive step goals (2-3 sessions/week) in people >=6 months after stroke | Steps/day increased by 1542 (95% CI 1014-2069) from pre- to post-intervention; high-intensity walking alone 406 (95% CI -63 to 876, not significant); combined 1307 (95% CI 752-1861) | RCT | Thompson ED, et al. Stroke. 2024. Increasing Activity After Stroke: A… |
| behavioral | 6-month lifestyle walking intervention: Garmin vivofit activity tracker plus monthly nurse telephone counselling (self-monitoring, goal-setting, action planning) in patients with HFrEF | Daily step count increased by 1420 (95% CI 749 to 2091) over control at 6 months (about 25%), without improvement in 6-minute walk distance | RCT | Vetrovsky T, et al. Circulation. 2024. Lifestyle Walking Intervention for… |
| behavioral | Behavioural physical-activity interventions that include motivational interviewing, vs comparators without it, in adults (97 RCTs, 27,811 participants) | Increases total physical activity by SMD 0.45 (95% CI 0.33 to 0.65), reported as equivalent to 1323 extra steps/day (low certainty) | meta-analysis | Zhu S, et al. BMJ (Clinical research ed.). 2024. Effectiveness of behavioural… |
| diet | Drinking caffeinated coffee on randomly assigned days vs avoiding caffeine, over 14 days in ambulatory adults (case-crossover trial) | 10,646 vs 9665 daily steps on coffee vs no-caffeine days (mean difference 1058; 95% CI 441 to 1675); nightly sleep 36 min shorter | RCT | Marcus GM, et al. The New England journal of medicine. 2023. Acute Effects of… |
Day-to-day noise on a wearable
How much a single day's daily steps from a consumer wearable moves around a person's own level, from months of free-living data in open datasets (same measure). ICC is the share of variation that is between people: near 1, one day tells people apart; near 0, it is mostly noise. The smallest detectable change (95%) is the change a single day, or a 7-day mean, must exceed before it is more than noise. Days to average assumes days are independent; for resting heart rate they are not, so the true number is larger.
| Dataset | People · person-days | Within-person SD | ICC: one day · 7-day mean | Detectable change: one day · 7-day mean | Days to average |
|---|---|---|---|---|---|
| LifeSnaps | 67 · 4,533 | 4,458 steps/day | 0.30 · 0.75 | 12,358 · 4,671 | 153 for 1,000 steps/day |
| PMData | 16 · 2,107 | 4,800 steps/day | 0.40 · 0.82 | 13,305 · 5,029 | 178 for 1,000 steps/day |
Sources
- Risk curve: Jayedi 2022 (PMID 34417979): all-cause HR 0.88 (0.83-0.93) per 1000 steps per day increase. Scaled to US values (NHANES).
- Jayedi et al. Daily Step Count and All-Cause Mortality: A Dose-Response Meta-analysis of Prospective Cohort Studies. Sports medicine (Auckland, N.Z.). 2022;52:89-99.
Map Daily Step Count against another biomarker.
Related markers: Cardiorespiratory Fitness (VO2 Max) · Chronotropic Index · Daily Movement (Wrist Accelerometer, MIMS) · Exercise Capacity (METs) · FEV1/FEV6 Ratio · Forced Expiratory Volume in 1 Second (FEV1) · Forced Vital Capacity (FVC) · Heart Rate Recovery (1 min)