Is it true that walking speed matters more than step count? How fast is fast enough?
This answer is a draft. It stays unpublished until legal review and source verification are complete.
From "10,000 steps a day" to "20 minutes of brisk walking": Japan's health-promotion targets have shifted towards "intensity", not just step count. The Ministry of Health, Labour and Welfare's 2023 guide asks for "exercise that makes you slightly out of breath" on top of walking. Here, in numbers, is what "walking fast" means and how fast that is.
Guides and evidence for "brisk walking"
| Item | Figure or content |
|---|---|
| Speed guide | 100–110 steps a minute, 5–6 km/h, 3.5–4 METs (3.5–4 times the energy used at rest) |
| How it feels | "You can talk but not sing", "slightly out of breath", "a light sweat" |
| National guide (2023) | Adults: physical activity at walking level or above for 60 minutes or more a day (about 8,000 steps) + exercise that makes you out of breath and sweaty for 60 minutes or more a week + strength training 2–3 days a week. Older people: 40 minutes or more a day (about 6,000 steps) + multi-component exercise 3 days a week |
| Nakanojo Study (Nakanojo, Gunma Prefecture; 5,000 people aged 65+; since 2000) | 8,000 steps / 20 minutes moderate intensity: linked with preventing high blood pressure, diabetes, dyslipidaemia and metabolic syndrome. 5,000 steps / 7.5 minutes: linked with preventing the need for care, dementia, heart disease and stroke. Above 12,000 steps / 40 minutes the benefit levels off |
| Large overseas study | Follow-up of 50,000 people in the UK (Stamatakis et al., 2018): brisk walkers had about 20% lower all-cause mortality than average-pace walkers; among over-60s, cardiovascular deaths were roughly halved |
| Stride | About height × 0.45 is the guide for brisk walking (about 72 cm for someone 160 cm tall). Lengthen the stride and you speed up naturally |
- Brisk-walking form: back straight, eyes 10–15 m ahead, think of pulling the arms back, land on the heel and push off with the toes. Concentrate on a longer stride and the arms swing naturally.
- Splitting the time: 2 × 10 minutes, totalling 20 minutes, is generally described as giving the same benefit. One station's walk on your commute and 10 minutes at lunch will do it.
- Measuring: more smartphone step-counter apps now show "walking speed" or "cadence (steps per minute)", not just steps. With a wrist device, a heart rate of 60–70% of your maximum (220 minus your age) is the guide for moderate intensity.
- Cautions: if you have knee or ankle pain, heart disease, or are on medication for high blood pressure, ask a doctor before increasing your pace. Heatstroke in summer; reflective gear in the dark mornings and evenings.
- How this relates to "10,000 steps a day": 10,000 steps has not been disproved. The current thinking is "include 20 minutes of brisk walking within your step target". 8,000 steps plus 20 minutes brisk is generally described as more effective than "10,000 steps slowly".
[Verify] Check the Nakanojo Study figures (8,000 steps / 20 minutes) against material published by the Tokyo Metropolitan Institute for Geriatrics and Gerontology, and the national guide's figures against the *Physical Activity and Exercise Guide for Health Promotion 2023*. Check Stamatakis et al. (Br J Sports Med 2018) against the original.
Misunderstanding 1｜More steps means more health
Steps alone at low intensity do little for the heart, lungs and blood vessels. Including 20 minutes brisk in 8,000 steps is the evidence-based guide.
Misunderstanding 2｜Brisk walking means almost running
"You can talk but not sing" is enough. No need to run; a pace that leaves you badly out of breath cannot be kept up.
Misunderstanding 3｜Over 12,000 steps every day is even better
The Nakanojo Study found the benefit levels off above 12,000 steps and 40 minutes, while the load on knees and feet rises. There is a right amount.
Misunderstanding 4｜Unless I walk 20 minutes in one go, it is pointless
2 × 10 minutes is generally described as giving the same benefit for the same total time. Build it up in pieces.
Misunderstanding 5｜Older people should take it easy and walk slowly
For older people too, "6,000 steps a day, including some walking that makes you slightly out of breath" is linked with preventing the need for care. But if you have knee or heart problems, ask a doctor, and increase the pace gradually.
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Sources
- Ministry of Health, Labour and Welfare, *Physical Activity and Exercise Guide for Health Promotion 2023* [健康づくりのための身体活動・運動ガイド2023]
https://www.mhlw.go.jp/stf/newpage_36593.html
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, *The Nakanojo Study* [中之条研究] (Yukitoshi Aoyagi)
https://www.tmghig.jp/research/
- Stamatakis E, et al. "Self-rated walking pace and all-cause, cardiovascular disease and cancer mortality: individual participant pooled analysis of 50 225 walkers from 11 population British cohorts." British Journal of Sports Medicine, 2018; 52(12): 761–768.
https://doi.org/10.1136/bjsports-2017-098677
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
About this article
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
This is general information. Results vary from person to person and depend on your own conditions and surroundings.
Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.
This article is not meant to diagnose or manage any specific medical condition. If you are worried about your health, see a doctor rather than relying on your own judgement.
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