The Influence of Different Exercise Patterns on the Incidence of Coronary Heart Disease in the Western Collaborative Group Study1

A Critical Review of Epidemiological Studies of Physical Activity

“…Moreover, Hong Kong and Holland, which represent areas of high population density, both enjoy high levels of mental and physical health.31 Further, studies by Syme et ul.lnn, ln6 demonstrated that the prevalence of CHD is higher among occupationally and residentially mobile people than among stable populations, and Tyroler and Cassel la4 have shown that not only groups in flux (social, geographical), but groups that are stable, but are surrounded by a matrix of populations in social flux (e.g., undergoing urbanization) exhibit relatively greater death rates from CHD. For general discussions, both theoretical and phenomenological, of those social influences on health and disease, see Cassel,l** 2n Jenkins,06 Van Dijl,leB and Rose and Be11.131 In addition, the papers by Rosenman 134 and Brand el ~1 . '~.…”