Study analysis · Preventive medicine · 2025
7,300 steps a day was linked to a 52% lower relative death risk — but the study couldn't say how many deaths that actually prevents.
In Brazilian adults, moving more was linked to lower death risk, but the benefit leveled off, and swapping just 10 minutes a day into harder exercise was linked to 10% lower relative risk.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
In simple terms
This study followed a large group of Brazilian adults over several years and looked at whether their daily movement and sleep habits were related to whether they died. It can show a link between being more active and living longer, but it cannot prove that activity itself caused people to live longer. Other things, like hidden illnesses or lifestyle differences, could explain the link.
What’s the bottom line?
Researchers followed 8,832 middle-aged and older Brazilian adults for about 5.4 years. They measured daily movement with a waist device. People with more steps and more activity generally had lower risk of dying, but the benefit leveled off at certain amounts.
How strong is this study?
The study is fairly strong because it followed thousands of people for about five years and used a device to measure activity instead of just asking people to remember. But it was not a randomized experiment, so we cannot be sure all other explanations were ruled out. Also, we only have the summary, not the full details, so we should be cautious about trusting every number.
0 / 100
- COI disclosureconflicts of interest not disclosed
- Data availabilitydata not shared
- Code availabilitycode not shared
38 / 100
- Randomizationrandomization unclear
- Blindingblinding unclear
- Control groupno control group
- Sample size (n=8832)+20/20
- Follow-up+10/10
100 / 100
31 / 100
- P-valuesno p-values reported
- Effect size+20/20
- Confidence intervalsno confidence intervals
- Pre-registrationnot pre-registered
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 541 / 100
Probability of being correct
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
This design cannot establish causation — the findings describe an association, not a cause. This is an observational prospective cohort study. Although it follows participants over time, it does not randomly assign movement behaviors, so residual confounding, reverse causation, and unmeasured factors cannot be ruled out. Therefore, it can demonstrate associations but cannot establish cause-effect relationships.
COI Unknown
Could not determine conflict of interest status
No conflicts of interest or funding information provided in the abstract.
The provided text appears to be an abstract without a conflict of interest or funding disclosure section. Therefore, COI severity and funder involvement cannot be determined.
Key takeaways
- 01
In 8,832 people followed about 5.4 years, 216 died (about 24 per 1,000 people).
- 02
More daily steps were linked to lower death risk until about 7,300 steps/day; at that level the relative hazard was 0.48 compared with 3,881 steps/day (about 52% lower relative risk).
- 03
Moving 10 minutes/day from other behaviors to MVPA was linked to a 10% lower relative hazard of death.
- 04
Sleep duration did not show a curvilinear association.
- 05
Absolute risk differences by step level were not reported.
- 06
Overall, about 2.4% of participants died during the ~5.4-year study (roughly 24 deaths per 1,000 people).
- 07
The study reports relative hazards, not absolute differences by step count, so it cannot say exactly how many fewer deaths per 1,000 people would occur at 7,300 steps/day; the absolute risk reduction was not reported.
Practical takeaways
Consider replacing 10 minutes of sitting, sleep, or light activity with moderate-to-vigorous physical activity if it's safe for you.
This is an observational association, not proof of causation. Absolute risk reduction was not reported, and full methodology is unavailable. Reverse causation and residual confounding cannot be excluded.
low confidenceAim for around 7,000–7,300 daily steps as a reasonable target linked to lower mortality in this cohort, rather than chasing 10,000.
The plateau is specific to this cohort and based on relative hazards; absolute benefit per person is unknown. The study cannot prove that adding steps directly lowers risk.
low confidenceWhy this study matters
The 7,300-step plateau
In 8,832 middle-aged and older Brazilian adults followed for a median 5.43 years, mortality risk fell as daily steps rose, then plateaued at about 7,300 steps/day. At that level, the relative hazard ratio was 0.48 versus 3,881 steps/day — a 52% lower relative risk. Absolute risk differences by step level were not reported.
It challenges the idea that more steps are always better and suggests a possible target, though it's not a magic number.
10 minutes to MVPA, 10% lower relative risk
Reallocating 10 minutes/day from any other behavior (sleep, sedentary time, or light activity) to moderate-to-vigorous physical activity was associated with a consistent 10% lower relative hazard of all-cause mortality. This came from compositional isotemporal substitution analysis. Absolute deaths prevented were not reported.
It gives a concrete, small daily swap people can consider, rather than a vague 'exercise more' message.
Light activity and sedentary time also linked
Light-intensity physical activity showed a curvilinear association, plateauing at about 245.8 minutes/day with a relative HR of 0.67 versus 135.6 minutes/day. Sedentary behavior below 842 minutes/day (about 14 hours/day) was linked to a relative HR of 0.67. Absolute risk reductions were not reported.
Even light movement and sitting less were linked to lower mortality, but the sedentary threshold is surprisingly high, so messaging needs nuance.
Sleep duration didn't show the same curve
All movement behaviors except sleep duration showed curvilinear associations with mortality. The abstract does not specify the sleep findings in detail or whether sleep was associated in another way. Full methodology was not available.
Sleep is often included in 24-hour movement guidelines, so this null-ish result may surprise audiences.
A low- and middle-income country perspective
The abstract notes that few studies have investigated daily steps and movement behaviors with all-cause mortality in low- and middle-income countries. This ELSA-Brasil cohort adds data from Brazilian adults, with 55.8% female, mean age 59.2 years, and 216 deaths over median 5.43 years.
Most step-count research comes from high-income countries, so this expands the evidence base geographically.
Want the whole report?
Detailed mode opens the full scientific breakdown — every score component, the methodology, conflicts of interest, the evidence analysis behind each claim, and the raw study data.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Researchers followed 8,832 middle-aged and older Brazilian adults for about 5.4 years. They measured daily movement with a waist device. People with more steps and more activity generally had lower risk of dying, but the benefit leveled off at certain amounts.
Research results
In 8,832 people followed about 5.4 years, 216 died (about 24 per 1,000 people). More daily steps were linked to lower death risk until about 7,300 steps/day; at that level the relative hazard was 0.48 compared with 3,881 steps/day (about 52% lower relative risk). Moving 10 minutes/day from other behaviors to MVPA was linked to a 10% lower relative hazard of death. Sleep duration did not show a curvilinear association. Absolute risk differences by step level were not reported.
What this means - more context
Overall, about 2.4% of participants died during the ~5.4-year study (roughly 24 deaths per 1,000 people). The study reports relative hazards, not absolute differences by step count, so it cannot say exactly how many fewer deaths per 1,000 people would occur at 7,300 steps/day; the absolute risk reduction was not reported.
Investigated associations of daily step count, total activity volume, moderate-to-vigorous physical activity (MVPA), light-intensity physical activity (LPA), sedentary behavior, sleep duration, and isotemporal substitutions with all-cause mortality in middle-aged and older Brazilian adults.
In the ELSA-Brasil cohort, 8,832 participants were followed for a median of 5.43 years with 216 deaths. Step count, total activity volume, MVPA, LPA, and sedentary behavior showed curvilinear associations with all-cause mortality, while sleep duration did not. Mortality risk declined until plateaus at approximately 7,300 steps/day, 15.9 m-g total activity, 49.4 MVPA minutes/day, and 245.8 LPA minutes/day; less than 842 sedentary minutes/day was linked to lower mortality. Reallocating 10 minutes/day from other behaviors to MVPA was associated with a consistent 10% lower relative hazard of mortality. Absolute risk differences by exposure level were not reported in the abstract; overall absolute mortality was 216 deaths among 8,832 participants, about 24 per 1,000 people over a median 5.43 years.
Methods Used
Prospective cohort study using ELSA-Brasil 3rd wave (2017-2019). Participants wore an ActiGraph wGT3X-BT on the waist for seven days and completed a sleep diary. Follow-up was to January 1, 2024. Cox regression models estimated adjusted hazard ratios, and compositional data analysis examined isotemporal substitutions. Full methodology details not available in abstract.
Main Finding
All behaviors except sleep showed curvilinear associations with mortality. Mortality declined with plateauing effects at: 7,300 steps/day (relative HR 0.48 vs reference 3,881 steps/day), total activity volume 15.9 m-g (relative HR 0.36), 49.4 MVPA minutes/day (relative HR 0.28), and 245.8 LPA minutes/day (relative HR 0.67 vs reference 135.6). Less than 842 sedentary minutes/day was linked to relative HR 0.67. Reallocating 10 daily minutes from other behaviors to MVPA was associated with a 10% lower relative hazard of mortality. Absolute risk differences were not reported; overall mortality was 216 deaths among 8,832 participants (about 24 per 1,000 over a median 5.43 years).
Confidence Level
Limited - based on abstract only, full methodology not available. Observational cohort design cannot exclude residual confounding or reverse causation.
Study Flags
Red Flags
- •Full text not available - methodology details cannot be verified
- •Observational design cannot exclude residual confounding or reverse causation
- •Absolute risk differences were not reported in the abstract; effect sizes are relative hazards
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Practical Takeaways
Consider replacing 10 minutes of sitting, sleep, or light activity with moderate-to-vigorous physical activity if it's safe for you.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 541 / 100
Probability of being correct
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Human Cohort Study
Subject
Moderate probability
on the GRADE evidence scale
This study followed a large group of Brazilian adults over several years and looked at whether their daily movement and sleep habits were related to whether they died. It can show a link between being more active and living longer, but it cannot prove that activity itself caused people to live longer. Other things, like hidden illnesses or lifestyle differences, could explain the link.
Strengths
- Large sample size (8,832 participants).
- Prospective cohort design with follow-up to January 1, 2024.
- Objective device-based measurement of physical activity and sedentary behavior using ActiGraph.
Weaknesses
- Observational design cannot establish causation.
- Full methodology not available - based on abstract only.
- Randomization, blinding, and control group status are unknown/not applicable.
Methodology
Evidence Keywords
Statistical Reporting
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Researchers followed 8,832 middle-aged and older Brazilian adults for about 5.4 years. They measured daily movement with a waist device. People with more steps and more activity generally had lower risk of dying, but the benefit leveled off at certain amounts.
Research results
In 8,832 people followed about 5.4 years, 216 died (about 24 per 1,000 people). More daily steps were linked to lower death risk until about 7,300 steps/day; at that level the relative hazard was 0.48 compared with 3,881 steps/day (about 52% lower relative risk). Moving 10 minutes/day from other behaviors to MVPA was linked to a 10% lower relative hazard of death. Sleep duration did not show a curvilinear association. Absolute risk differences by step level were not reported.
What this means - more context
Overall, about 2.4% of participants died during the ~5.4-year study (roughly 24 deaths per 1,000 people). The study reports relative hazards, not absolute differences by step count, so it cannot say exactly how many fewer deaths per 1,000 people would occur at 7,300 steps/day; the absolute risk reduction was not reported.
Investigated associations of daily step count, total activity volume, moderate-to-vigorous physical activity (MVPA), light-intensity physical activity (LPA), sedentary behavior, sleep duration, and isotemporal substitutions with all-cause mortality in middle-aged and older Brazilian adults.
In the ELSA-Brasil cohort, 8,832 participants were followed for a median of 5.43 years with 216 deaths. Step count, total activity volume, MVPA, LPA, and sedentary behavior showed curvilinear associations with all-cause mortality, while sleep duration did not. Mortality risk declined until plateaus at approximately 7,300 steps/day, 15.9 m-g total activity, 49.4 MVPA minutes/day, and 245.8 LPA minutes/day; less than 842 sedentary minutes/day was linked to lower mortality. Reallocating 10 minutes/day from other behaviors to MVPA was associated with a consistent 10% lower relative hazard of mortality. Absolute risk differences by exposure level were not reported in the abstract; overall absolute mortality was 216 deaths among 8,832 participants, about 24 per 1,000 people over a median 5.43 years.
Methods Used
Prospective cohort study using ELSA-Brasil 3rd wave (2017-2019). Participants wore an ActiGraph wGT3X-BT on the waist for seven days and completed a sleep diary. Follow-up was to January 1, 2024. Cox regression models estimated adjusted hazard ratios, and compositional data analysis examined isotemporal substitutions. Full methodology details not available in abstract.
Main Finding
All behaviors except sleep showed curvilinear associations with mortality. Mortality declined with plateauing effects at: 7,300 steps/day (relative HR 0.48 vs reference 3,881 steps/day), total activity volume 15.9 m-g (relative HR 0.36), 49.4 MVPA minutes/day (relative HR 0.28), and 245.8 LPA minutes/day (relative HR 0.67 vs reference 135.6). Less than 842 sedentary minutes/day was linked to relative HR 0.67. Reallocating 10 daily minutes from other behaviors to MVPA was associated with a 10% lower relative hazard of mortality. Absolute risk differences were not reported; overall mortality was 216 deaths among 8,832 participants (about 24 per 1,000 over a median 5.43 years).
Confidence Level
Limited - based on abstract only, full methodology not available. Observational cohort design cannot exclude residual confounding or reverse causation.
Study Flags
Red Flags
- •Full text not available - methodology details cannot be verified
- •Observational design cannot exclude residual confounding or reverse causation
- •Absolute risk differences were not reported in the abstract; effect sizes are relative hazards
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Practical Takeaways
Consider replacing 10 minutes of sitting, sleep, or light activity with moderate-to-vigorous physical activity if it's safe for you.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 541 / 100
Probability of being correct
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Human Cohort Study
Subject
Moderate probability
on the GRADE evidence scale
This study followed a large group of Brazilian adults over several years and looked at whether their daily movement and sleep habits were related to whether they died. It can show a link between being more active and living longer, but it cannot prove that activity itself caused people to live longer. Other things, like hidden illnesses or lifestyle differences, could explain the link.
Strengths
- Large sample size (8,832 participants).
- Prospective cohort design with follow-up to January 1, 2024.
- Objective device-based measurement of physical activity and sedentary behavior using ActiGraph.
Weaknesses
- Observational design cannot establish causation.
- Full methodology not available - based on abstract only.
- Randomization, blinding, and control group status are unknown/not applicable.
Methodology
Evidence Keywords
Statistical Reporting
Scoring
How strong is this study?
The study is fairly strong because it followed thousands of people for about five years and used a device to measure activity instead of just asking people to remember. But it was not a randomized experiment, so we cannot be sure all other explanations were ruled out. Also, we only have the summary, not the full details, so we should be cautious about trusting every number.
0 / 100
- COI disclosureconflicts of interest not disclosed
- Data availabilitydata not shared
- Code availabilitycode not shared
38 / 100
- Randomizationrandomization unclear
- Blindingblinding unclear
- Control groupno control group
- Sample size (n=8832)+20/20
- Follow-up+10/10
100 / 100
31 / 100
- P-valuesno p-values reported
- Effect size+20/20
- Confidence intervalsno confidence intervals
- Pre-registrationnot pre-registered
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 541 / 100
Probability of being correct
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
This design cannot establish causation — the findings describe an association, not a cause. This is an observational prospective cohort study. Although it follows participants over time, it does not randomly assign movement behaviors, so residual confounding, reverse causation, and unmeasured factors cannot be ruled out. Therefore, it can demonstrate associations but cannot establish cause-effect relationships.
COI Unknown
Could not determine conflict of interest status
No conflicts of interest or funding information provided in the abstract.
The provided text appears to be an abstract without a conflict of interest or funding disclosure section. Therefore, COI severity and funder involvement cannot be determined.
Standing
Who’s using this study?
The videos and claims on this site that lean on this study, and the researchers who wrote it.
1 video from Menno Henselmans cite this study, drawing 1 claim from it.
- Very strong evidence
Randomized or controlled trials support this claim, alongside consistent supporting evidence.
Evidence
Authored by
7 researchersIf this is your work, this is how we attribute it on Fit Body Science. Kelly R. Evenson is listed as the lead author.
- Universidade Federal do Rio Grande do Sul
Cited in 1 claim