Overview: Those who sit six or more hours a day are at an increased risk of heart disease and premature death.
bron: Simon Fraser University
New research adds weight to the argument that prolonged sitting can be hazardous to your health.
An international survey of more than 100,000 people in 21 countries found that people who sat for six to eight hours a day had a 12-13 percent higher risk of premature death and heart disease, while those who sat for more than eight hours a day increased to 20. per cent.
The study, which was co-led by Simon Fraser University professor of health sciences Scott Lear and Wei Li of the Chinese Academy of Medical Sciences in Beijing, is published in the journal. heart range.
Their study followed individuals over an average of 11 years and found that long periods of sitting were associated with an increased risk of early death and cardiovascular disease. And while sitting was a problem in all countries, it was especially the case in low- and lower-middle-income countries.
“The overarching message here is to reduce how much you sit,” Lear says. “If sitting has to be done, getting more exercise at other times of the day will offset that risk.”
Not surprisingly, those who sat the most and were the least active had the highest risk — up to 50 percent — while those who sat the most, but were also the most active, had a significantly lower risk of about 17 percent.
“For those who sit more than four hours a day, replacing half an hour of sitting with exercise reduced the risk by 2%,” Lear notes. “With only one in four Canadians meeting the activity guidelines, there is a real opportunity here for people to increase their activity levels and reduce their chances of premature death and heart disease.”
The study found some association in lower-income countries, leading the researchers to speculate that it may be because sitting in higher-income countries is typically associated with higher socioeconomic status and better-paying jobs.
Lear notes that clinicians should focus on sitting less and being more active, because an inexpensive intervention can have a huge benefit.
But while clinicians need to get the message across about confronting sedentary activity with activity, individuals need to better assess their lifestyle and take their health seriously, Lear adds. “Our study found that a combination of sitting and inactivity was responsible for 8.8 percent of all deaths, which is close to the contribution of smoking” (10.6 percent in the Lear and Lee study). It’s a global problem with a remarkably simple solution. Scheduling time from that chair is a good start.”
About this research into news about cardiovascular disease
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bron: Simon Fraser University
Contact: Press Office – Simon Fraser University
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“Association of sitting with mortality and cardiovascular events in high-income, middle-income, and low-income countries.Written by Sidong Li et al. heart range
Overview
Association of sitting with mortality and cardiovascular events in high-income, middle-income, and low-income countries.
Interest
Sitting for long periods is associated with an increased risk of cardiovascular disease (CVD) and mortality in high-income countries, but it is not known whether risks also increase in low- and middle-income countries.
Goal
Exploring the association of sitting time with mortality and severe CVD in countries at different economic scales using data from the Prospective Urban-Rural Epidemiology Study.
Design, setup and participants
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This cohort, population-based study included participants aged 35 to 70 years who were recruited from January 1, 2003 and followed until August 31, 2021 in 21 high-, middle- and low-income countries with median follow-up. 11.1 years.
exposures
Daily sitting time is measured using the International Physical Activity Questionnaire.
Key findings and measures
Composition of all-cause mortality and major cardiovascular disease (defined as cardiovascular death, myocardial infarction, stroke, or heart failure).
effects
Of the 105677 participants, 61,925 (58.6%) were women and the mean age (SD) was 50.4 (9.6) years. During a median follow-up of 11.1 (IQR, 8.6-12.2) years, 6,233 deaths and 5,696 serious cardiovascular events (2,349 myocardial infarctions, 2,966 strokes, 671 heart failure and 1,792 cardiovascular deaths) were documented. Compared to the control group (sitting less than 4 hours per day), higher sitting time (8 hours per day) was associated with an increased risk of the composite outcome (hazard ratio). [HR]1.19; 95% BI, 1.11-1.28; sfor trend for trend for direction <.001 wp_automatic_readability="18.651286601597">
When stratified by income level by country, the association between sitting time and the composite score was stronger in low- and lower-middle-income countries (8 hours per day: HR, 1.29; 95% CI, 1.16-1.44) than in countries with high-income and upper middle-income countries (HR 1.08; 95% CI 0.98-1.19; sfor response = .02). Compared with those who reported sitting for less than 4 hours per day and high levels of physical activity, participants who sat for 8 or more hours per day had a 17% to 50% higher associated risk of a composite score for physical activity levels; The risks were limited by increased physical activity.
Conclusions and relevance
Frequent sitting has been associated with an increased risk of all-cause mortality and cardiovascular disease in economically diverse environments, particularly in low-income and lower-middle-income countries. Reducing sitting time and increasing physical activity could be an important strategy to reduce the global burden of premature death and CVD.