Worldwide there has been a large shift towards less physically demanding work and a more sedentary lifestyle.[1] This has been accompanied by increasing use of mechanized transportation, automobile dependency, a greater prevalence of labor saving technology in the home, and less active recreational pursuits.[1] At least 31% of the world's population does not get sufficient physical exercise.[2] This is true in almost all developed and developing countries,[2] and among children.[3][4] Some experts refer to sitting as "the new smoking" because of its negative effects on overall health.[5]
These exercise trends are contributing to the rising rates of chronic long-lasting diseases such as: obesity, heart disease, stroke, preventable causes of death, cardiovascular disease, high blood pressure and high cholesterol.[6] Active transport (walking, bicycling, etc.) has been found to be inversely related to obesity in Europe, North America, and Australia.[7] Thus exercise has been associated with a decrease in mortality.[6]
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