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Excessive Sitting Increases Heart Disease Risk

A study shows a strong link between excessive sitting and increased risks of heart disease and death, even for those who exercise regularly.

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HealthHealth RisksExerciseHeart DiseaseCardiovascular HealthSedentary Lifestyle

American College Of CardiologyAmerican Heart AssociationUk BiobankMassachusetts General HospitalBrown University

Shaan KhurshidCharles Eaton

What is the main finding of the study on prolonged sitting and heart health?: A study published in JACC found a clear increase in the risk of heart disease and death with more than 10.6 hours of daily sitting, even in physically active individuals.
How was sedentary time measured in this study, and what was the average daily sedentary time?: The study involved 89,530 participants from the UK Biobank, who wore wrist accelerometers for seven days to measure sedentary time. The average daily sedentary time was 9.4 hours.
At what point did the risk of heart failure and cardiovascular mortality significantly increase?: The risk of heart failure and cardiovascular mortality significantly increased only after exceeding 10.6 hours of daily sedentary behavior, indicating a threshold effect. This was true even for those who met recommended physical activity guidelines.
What recommendations do experts make regarding exercise and sedentary behavior for heart health?: While regular exercise is beneficial, the study highlights that reducing sedentary time is crucial for heart health. Current guidelines should emphasize minimizing prolonged sitting to improve cardiovascular health.
What suggestions are given to improve the accuracy of measuring sedentary behavior and reducing its health risks?: Experts recommend substituting just 30 minutes of excessive sitting time with any physical activity to reduce heart risks. Utilizing wearable accelerometers for more accurate measurement of sedentary behavior is also suggested.

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