Titulný obrázok: @wertinio – www.freepik.com
Obrázok v texte: @gpointstudio – www.freepik.com
Video v texte: Fit Gent - YouTube.com
1) Exercise ball. Wikipedia.org (anglická verzia). Dostupné online tu.
2) Hubbard, Daniel MEd. Is Unstable Surface Training Advisable for Healthy Adults? Strength and Conditioning Journal: June 2010 - Volume 32 - Issue 3 - p 64-66. Dostupné online tu.
3) Coachmag.co.uk. Gym Ball Exercises That Everyone Should Be Doing. Dennis Publishing Limited: March 19, 2021. Dostupné online tu.
4) Kingma I, van Dieën JH. Static and dynamic postural loadings during computer work in females: Sitting on an office chair versus sitting on an exercise ball. Appl Ergon. 2009 Mar;40(2):199-205. doi: 10.1016/j.apergo.2008.04.004. Epub 2008 May 27. PMID: 18508028. Dostupné online tu.
5) McGill SM, Kavcic NS, Harvey E. Sitting on a chair or an exercise ball: various perspectives to guide decision making. Clin Biomech (Bristol, Avon). 2006 May;21(4):353-60. doi: 10.1016/j.clinbiomech.2005.11.006. Epub 2006 Jan 10. PMID: 16410033. Dostupné online tu.