Editing Sitting (section)

=== Sedentary behaviour ===
[[File:DeTroy.jpg|thumb|Women reclining in chairs. Painting by [[Jean-François de Troy]].]]

Sedentary behaviour is any waking behaviour, whether in sitting or reclining posture, by an energy expenditure less than or equal to 1.5 [[Metabolic equivalent of task|metabolic equivalents of task]] (METs).<ref>{{cite journal|first1=Research Network |last1=Sedentary Behaviour |title=Letter to the editor: Standardized use of the terms "sedentary" and "sedentary behaviours" |journal=Applied Physiology, Nutrition, and Metabolism|date=2012 |volume=37 |issue=3 |pages=540–542|doi=10.1139/h2012-024 |pmid=22540258 }}</ref> MET, beside the watt and kilojoules, is the unit for expressing the energy cost of physical activities. One MET is defined as resting metabolic rate – as energy used with a person at rest, sitting quietly in a chair or as the amount of oxygen (O<sub>2</sub>) consumed with that person.<ref>{{cite journal|first1=M. |last1=Jette |first2=K. |last2=Sidney |first3=G. |last3=Blümchen |title=Metabolic equivalents (METS) in exercise testing, exercise prescription, and evaluation of functional capacity |journal=Clinical Cardiology |year=1990 |volume=13 |issue=8 |pages=555–65 |doi=10.1002/clc.4960130809 |pmid=2204507 |s2cid=23629878 |doi-access= }}</ref> MET for  an adult weighing 70&nbsp;kg equals 3.5 ml O<sub>2</sub> per kg body weight per min.<ref>{{cite journal|first1=Kristi B. |last1=Adamo |first2=Stephanie A. |last2=Prince |first3=Andrea C. |last3=Tricco |first4=Sarah |last4=Connor-Gorber |first5=Mark |last5=Tremblay |title=A comparison of indirect versus direct measures for assessing physical activity in the pediatric population: A systematic review |journal=International Journal of Pediatric Obesity |year=2009 |volume=4 |issue=1 |pages=2–27 |doi=10.1080/17477160802315010 |pmid=18720173 }}</ref>

Sedentary behaviour should be distinguished from being inactive – performing insufficient amounts of MVPA (moderate to vigorous physical activity).<ref>{{cite journal|first1=David J. |last1=Sturm |first2=Anne |last2=Kelso |first3=Sussane |last3=Kobel |first4=Yolanda |last4=Demetriou |title=Physical activity levels and sedentary time during school hours of 6th-grade girls in Germany |journal=Journal of Public Health: From Theory to Practice |year=2020 |volume=29 |issue=4 |pages=847–855 |doi=10.1007/s10389-019-01190-1 |s2cid=210158026 |doi-access=free }}</ref> The [[World Health Organization]]<ref>{{cite web |title=WHO 2011 |url=https://www.who.int/whosis/whostat/2011/en/|archive-url=https://web.archive.org/web/20111116011154/http://www.who.int/whosis/whostat/2011/en/|url-status=dead|archive-date=November 16, 2011}}</ref> recommends at least 60 min of daily MVPA for children and adolescents aged 5–17 years, and 150 min of weekly MVPA for adults.

Sedentary behaviour can not be equated with screen time, although some researchers found out that a large share of waking time by children and adolescents in a sedentary position is accumulated by media consumption in front of a screen.<ref>{{Cite journal |last1=Huber |first1=Gerhard |last2=Koppe l|first2=Maximilian |year=2017 |title=Analyse der Sitzzeiten von Kindern und Jugendlichen zwischen 4 und 20 Jahren |journal=DZSM |volume=2017 |issue=4 |pages=101–106 |doi=10.5960/dzsm.2017.278 |doi-access=free }}</ref>