Cardiovascular Risk Factors, Maximal Oxygen Uptake and Sedentariness: an Observational Study

Inclusion Criteria: * ability to walk at least 1km, * born in 1938,1939,1940,1941 or 1942 * Sufficiently good health to be able to take part in the study, as determined by the researchers Exclusion Criteria: * Illness or disability that precludes exercise or hinders completion of the study * Uncontrolled hypertension * Symptomatic valve disease, hyper tropic cardio-myopathy or unstable angina * Active cancer * Test results indicating that study participation is unsafe * Inclusion in other studies conflicting with participation in this one