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3. 3) World Health Organization. Global Recommendation on Physical Activity for Health, 2010. http://whqlibdoc.who.int/publications/2010/9789241599979_eng.pdf.
4. 4) United States Department of Health and Human Services. 2008 Physical Activity Guidelines for Americans, 2008. https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/216370/dh_128210.pdf.
5. 5) Australian Government Department of Health. Australia’s Physical Activity & Sedentary Behaviour Guidelines, 2013. http://www.health.gov.au/internet/main/publishing.nsf/content/F01F92328EDADA5BCA257BF0001E720D/$File/brochure%20PA%20Guidelines_A5_18-64yrs.PDF.