The World Health Organization defines physical activity as "any bodily movement produced by skeletal muscles that requires energy expenditure."
Sources
- Attività fisica - EpiCentro - Istituto Superiore di Sanità (epicentro.iss.it)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC7719906/ (pmc.ncbi.nlm.nih.gov)
- https://www.who.int/news-room/fact-sheets/detail/physical-activity (who.int)
- https://www.who.int/europe/health-topics/physical-activity (who.int)
- https://www.ncbi.nlm.nih.gov/sites/books/NBK566047/ (ncbi.nlm.nih.gov)
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