Replacing Chairs with Fresh Air: Studies Investigate the Relationship between Sitting Time and Heart Health

Overview: People who sit for more than 6 hours a day are at significantly higher risk of heart disease and premature death.

sauce: Simon Fraser University

New research adds weight to the argument that sitting for long periods of time may be dangerous to your health.

According to an international survey of more than 100,000 people in 21 countries, those who sat 6-8 hours a day had a 12-13% increased risk of premature death and heart disease, but more than 8 hours a day. For those who sat down it increased. To 20% calm.

The study, co-led by Scott Lear, a professor of health sciences at Simon Fraser University, and Wei Lee of the Chinese Academy of Medicine in Beijing, was published in the journal today. JAMA Cardiology..

Their study follows individuals for an average of 11 years and finds that sitting for long periods of time increases the risk of premature death and cardiovascular disease. Sitting was a problem in all countries, especially in low- and middle-income countries.

“The comprehensive message here is to minimize the amount of sitting,” says Lear. “If you need to sit down, you can offset that risk by exercising more at other times of the day.”

Not surprisingly, the most sitting and least active people had the highest risk (up to 50%), and the most sitting but most active people had a significantly lower risk of about 17%.

“For those who sit more than four hours a day, replacing sitting for 30 minutes with exercise reduced their risk by 2%,” Lear said. “Only one in four Canadians meets the activity guidelines, so here is a real opportunity for people to increase their activity and reduce the chances of premature death or heart disease.”

The study found certain relevance in low-income countries, and sitting in high-income countries may be due to the fact that sitting in high-income countries is usually associated with higher socio-economic status and better-paying jobs. Researchers are guessing.

Clinicians need to focus on reducing sitting and increasing activity because it is a low-cost intervention that can have tremendous benefits, Lear said.

However, while clinicians need to convey a message about countering active sitting, individuals need to better evaluate their lifestyle and take health seriously, Leah adds. .. “Our study found that the combination of sitting and inactivity accounted for 8.8% of all deaths, a close contribution to smoking,” the Lear and Li study found. 10.6%). “This is a global issue and it’s very easy to fix. Scheduling the time to get out of that chair is a great start.”

About this Cardiovascular Disease Research News

author: Press office
sauce: Simon Fraser University
contact: Press Office-Simon Fraser University
image: The image is in the public domain

Independent research: Closed access.
“”Relationship between sitting time and mortality and cardiovascular events in high-income, middle-income, and low-income countries“Sidong Lietal. JAMA Cardiology

Overview

Relationship between sitting time and mortality and cardiovascular events in high-income, middle-income, and low-income countries

Importance

Sitting for long periods of time increases the risk of cardiovascular disease (CVD) and mortality in high-income countries, but it is unclear whether low- and middle-income countries also have an increased risk.

Purpose

Use data from future urban and rural epidemiological studies to investigate the association between mortality and major CVD and sitting time in countries of different economic levels.

Design, settings, and participants

See also

This population-based cohort study included participants aged 35-70 years recruited from January 1, 2003, in 21 high-income, middle-income, and low-income countries with a median follow-up. Tracked until 31st August 2021. 11.1 years.

Exposure

Daily sitting time measured using the International Physical Activity Questionnaire.

Main results and countermeasures

A combination of all-cause mortality and major CVD (defined as cardiovascular death, myocardial infarction, stroke, or heart failure).

result

Of the 105 677 participants, 61925 (58.6%) were female and the average (SD) age was 50.4 (9.6) years. During a median follow-up of 11.1 (IQR, 8.6-12.2) years, 6233 deaths and 5696 major cardiovascular events (2349 myocardial infarctions, 2966 strokes, 671 heart failure, 1792). Cardiovascular death) was recorded. Longer seating times (more than 8 hours per day) compared to the reference group (less than 4 hours per day) were associated with an increased risk of compound results (hazard ratio). [HR]1.19; 95% CI, 1.11-1.28; PFor trend <.001), mortality from all causes (HR, 1.20; 95% CI, 1.10-1.31; PTrend <.001), and major CVD (HR, 1.21; 95% CI, 1.10-1.34; PFor trend <.001).

When stratified by national income level, sitting time and combined results are compared to low-income and low-middle-income countries (8 hours or more per day: HR, 1.29; 95% CI, 1.16-1.44). Was strongly related. High-income and high-middle-income countries (HR, 1.08; 95% CI, 0.98-1.19; PIn the case of interaction = .02). Participants who sat more than 8 hours a day had a 17% to 50% associated risk of combined results across physical activity levels compared to participants who reported less than 4 hours of seating time and high levels of physical activity per day. It became expensive. And the risk diminished with increasing levels of physical activity.

Conclusions and relevance

In low- and middle-income countries, especially in economically diverse environments, sitting for long periods of time increases the risk of death and cardiovascular disease from all causes. Reducing sedentary time with increased physical activity may be an important strategy for reducing the global burden of premature death and cardiovascular disease.