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Meta-Analysis
. 2023 Dec 21;30(18):1975-1985.
doi: 10.1093/eurjpc/zwad229.

The association between daily step count and all-cause and cardiovascular mortality: a meta-analysis

Maciej Banach  1   2   3   4 , Joanna Lewek  1   2 , Stanisław Surma  5 , Peter E Penson  6   7   8 , Amirhossein Sahebkar  9   10   11 , Seth S Martin  4 , Gani Bajraktari  12   13 , Michael Y Henein  13 , Željko Reiner  14 , Agata Bielecka-Dąbrowa  1   2 , Ibadete Bytyçi  12   13
Affiliations
Meta-Analysis

The association between daily step count and all-cause and cardiovascular mortality: a meta-analysis

Maciej Banach et al. Eur J Prev Cardiol. .

Erratum in

Abstract

Aims: There is good evidence showing that inactivity and walking minimal steps/day increase the risk of cardiovascular (CV) disease and general ill-health. The optimal number of steps and their role in health is, however, still unclear. Therefore, in this meta-analysis, we aimed to evaluate the relationship between step count and all-cause mortality and CV mortality.

Methods and results: We systematically searched relevant electronic databases from inception until 12 June 2022. The main endpoints were all-cause mortality and CV mortality. An inverse-variance weighted random-effects model was used to calculate the number of steps/day and mortality. Seventeen cohort studies with a total of 226 889 participants (generally healthy or patients at CV risk) with a median follow-up 7.1 years were included in the meta-analysis. A 1000-step increment was associated with a 15% decreased risk of all-cause mortality [hazard ratio (HR) 0.85; 95% confidence interval (CI) 0.81-0.91; P < 0.001], while a 500-step increment was associated with a 7% decrease in CV mortality (HR 0.93; 95% CI 0.91-0.95; P < 0.001). Compared with the reference quartile with median steps/day 3867 (2500-6675), the Quartile 1 (Q1, median steps: 5537), Quartile 2 (Q2, median steps 7370), and Quartile 3 (Q3, median steps 11 529) were associated with lower risk for all-cause mortality (48, 55, and 67%, respectively; P < 0.05, for all). Similarly, compared with the lowest quartile of steps/day used as reference [median steps 2337, interquartile range 1596-4000), higher quartiles of steps/day (Q1 = 3982, Q2 = 6661, and Q3 = 10 413) were linearly associated with a reduced risk of CV mortality (16, 49, and 77%; P < 0.05, for all). Using a restricted cubic splines model, we observed a nonlinear dose-response association between step count and all-cause and CV mortality (Pnonlineraly < 0.001, for both) with a progressively lower risk of mortality with an increased step count.

Conclusion: This meta-analysis demonstrates a significant inverse association between daily step count and all-cause mortality and CV mortality with more the better over the cut-off point of 3867 steps/day for all-cause mortality and only 2337 steps for CV mortality.

Keywords: All-cause mortality; Cardiovascular mortality; Daily step counts; Prevention.

Plain language summary

There is strong evidence showing that sedentary life may significantly increase the risk of cardiovascular (CV) disease and shorten the lifespan. However, the optimal number of steps, both the cut-off points over which we can see health benefits, and the upper limit (if any), and their role in health are still unclear. In this meta-analysis of 17 studies with almost 227 000 participants that assessed the health effects of physical activity expressed by walking measured in the number of steps, we showed that a 1000-step increment correlated with a significant reduction of all-cause mortality of 15%, and similarly, a 500-step increment correlated with a reduced risk of CV mortality of 7%. In addition, using the dose–response model, we observed a strong inverse nonlinear association between step count and all-cause mortality with significant differences between younger and older groups. It is the first analysis that not only looked at age and sex but also regional differences based on the weather zones, and for the first time, it assesses the effect of up to 20 000 steps/day on outcomes (confirming the more the better), which was missed in previous analyses. The analysis also revealed that depending on the outcomes, we do not need so many steps to have health benefits starting with even 2500/4000 steps/day, which, in fact, undermines the hitherto definition of a sedentary life.

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Conflict of interest statement

Conflict of interest: M.B.: speakers bureau: Amgen, Daiichi Sankyo, Kogen, KRKA, Polpharma, Novartis, Novo-Nordisk, Sanofi-Aventis, Teva, Viatris, Zentiva; consultant to Amgen, Daiichi Sankyo, Esperion, Freia Pharmaceuticals, NewAmsterdam, Novartis, Novo-Nordisk, Polfarmex, Sanofi-Aventis; Grants from Amgen, Daiichi Sankyo, Sanofi, Valeant, and Viatris, CMDO at Longevity Group; CMO at Nomi Biotech Corporation; P.E.P. owns four shares in AstraZeneca PLC and has received honoraria and/or travel reimbursement for events sponsored by AKCEA, Amgen, AMRYT, Link Medical, Mylan, Napp, Sanofi. S.S.M. has received research support from Apple, Google, and iHealth, all companies that sell devices that measure step counts. All other authors report no competing interests.

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