Sjöström Michael, Yngve Agneta, Ekelund Ulf, Poortvliet Eric, Hurtig-Wennlöf Anita, Nilsson Andreas, Hagströmer Maria, Nylund Kamilla, and Faskunger Johan. “Physical Activity in Groups of Swedish Adults. Are the Recommendations Feasible?”. Food & Nutrition Research (September 1, 2002): 123-130. Accessed February 18, 2025. https://foodandnutritionresearch.net/index.php/fnr/article/view/159.