Contents

Search

sedentary lifestyle; physical inactivity

Epidemiology: - 1/4 of U.S. adults sit > 8 hours/day [5] - 3% of U.S. adults sit < 4 hours & exercise 150-300 minutes/week [5] - 2007 to 2016, total daily sitting time increased by about an hour for adolescents (reaching 8 hours) & adults (6 hours) [6[ - leisure computer use of >= 1 hour per day increased for all age groups - prevalence among adults increased from 29% to 50% from 2003 to 2016 [6] - > 50% of people watched >= 2 hours of television or videos daily [6] Complications: - increased mortality for sedentary lifestyle - watching TV > 2 hours/day (~ 1.4 years of life) - sitting > 3 hours/day (~ 2 years of life) [1] - watching television for several hours a day is associated with poor health outcomes in black adults; sitting at work is not [8] - increased risk of diabetes & cardiovascular disease [7] - health hazards of sedentary behavior are not completely mitigated by exercise [2,4] - > 12.5 hours daily in sedentary time & sedentary periods of > 30 minutes with greatest mortality risk - predominantly sitting at work associated with 16% higher all cause mortality & 34% higher cardiovascular mortality - increased risk of meningioma - increased body mass index - not associated with increased risk for dementia [7] Management: - interrupting sedentary periods with activity every 30 minutes may mitigate mortality risk of sedentary lifestyle [4] - additional 15-30 minutes of physical activity per day [9]

General

lifestyle & health health risk factor(s)

References

  1. Katzmarzyk PT, Lee IM Sedentary behaviour and life expectancy in the USA: a cause- deleted life table analysis. BMJ Open. 2012 Jul 9;2(4) PMID: 22777603
  2. Biswas A et al Sedentary Time and Its Association With Risk for Disease Incidence, Mortality, and Hospitalization in Adults: A Systematic Review and Meta-analysis. Ann Intern Med. 2015;162(2):123-132 PMID: 25599350 http://annals.org/article.aspx?articleid=2091327 - Lynch BM, Owen N Too Much Sitting and Chronic Disease Risk: Steps to Move the Science Forward. Ann Intern Med. 2015;162(2):146-147 PMID: 25599352 http://annals.org/article.aspx?articleid=2091332
  3. Niedermaier T et al Body mass index, physical activity, and risk of adult meningioma and glioma. Neurology. September 16, 2015 PMID: 26377253 http://www.neurology.org/content/early/2015/09/16/WNL.0000000000002020
  4. Diaz KM, Howard VJ, Hutto B et al Patterns of Sedentary Behavior and Mortality in U.S. Middle- Aged and Older Adults: A National Cohort Study. Ann Intern Med. Sept 12, 2017. PMID: 28892811 http://annals.org/aim/article/2653704/patterns-sedentary-behavior-mortality-u-s-middle-aged-older-adults - Alter DA Tracking Our Physical Inactivity and Progression to Death: Is This Evolutionary Stagnation? Ann Intern Med. Sept 12, 2017. PMID: 28892823 http://annals.org/aim/article/2653710/tracking-our-physical-inactivity-progression-death-evolutionary-stagnation
  5. Ussery EN, Fulton JE, Galuska DA et al Joint Prevalence of Sitting Time and Leisure-Time Physical Activity Among US Adults, 2015-2016. JAMA. 2018;320(19):2036-2038 PMID: 30458482 https://jamanetwork.com/journals/jama/article-abstract/2715582
  6. Yang L, Cao C, Kantor ED et al Trends in Sedentary Behavior Among the US Population, 2001-2016. JAMA. 2019;321(16):1587-1597. PMID: 31012934 https://jamanetwork.com/journals/jama/fullarticle/2731178
  7. Kivimaki M, Singh-Manoux A, Pentti J et al. Physical inactivity, cardiometabolic disease, and risk of dementia: An individual-participant meta-analysis. BMJ 2019 Apr 17; 365:l1495 PMID: 30995986 Free PMC Article https://www.bmj.com/content/365/bmj.l1495
  8. Garcia JM et al Types of Sedentary Behavior and Risk of Cardiovascular Events and Mortality in Blacks: The Jackson Heart Study. J Am Hear Assoc 2019 8(13): July 2, https://www.ahajournals.org/doi/10.1161/JAHA.118.010406
  9. Gao W, Sanna M, Chen YH et al Occupational Sitting Time, Leisure Physical Activity, and All-Cause and Cardiovascular Disease Mortality. JAMA Netw Open. 2024;7(1):e2350680 PMID: 38241049 PMCID: PMC10799265 Free PMC article https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2814094