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What level of physical activity protects against premature cardiovascular death? The Caerphilly study
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  • Published on:
    Response to Tammy M Vehige et al.

    Dear Editor

    In response to Tammy Vehige et al,[1] we had recognised that our findings may be controversial, but these were rigorously evaluated by ourselves and others before publication. However, to put it in context, it is one study amongst a particular population of healthy, middle-aged men of whom about 40% appeared to be doing enough vigorous intensity activity to confer cardiovascular benefit. The pape...

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    Conflict of Interest:
    None declared.
  • Published on:
    Response to Dr Buckley

    Dear Editor

    In response to Dr Buckley [1] we agree that data on cardiovascular fitness would have been a useful addition to our study but resources in terms of staff and equipment precluded this possibility. In an ideal study, both cardiovascular fitness and questionnaire data would be obtained in parallel and in a long term cohort study habitual physical activity should be re-assessed at intervals.

    Refer...

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    Conflict of Interest:
    None declared.
  • Published on:
    Some key weakness in this study

    Dear Editor

    I couldn't help but sit up and take notice of the news this morning, which made reference to this paper on physical activity and heart disease.[1] Obviously the news reporters are free to say what they like but I am concerned about some key weakness in this study, which has let the press loose on stating that brisk walking does not help prevent heart disease. It is well known and accepted practice within spo...

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    Conflict of Interest:
    None declared.
  • Published on:
    General Exercise Recommendation
    • Tammy M Vehige, Program Manager, Physical Activity
    • Other Contributors:
      • Stephanie Fulton, Thomas Wilding, Frances Groen

    Dear Editor

    Recently a reporter from the Arizona Republic wrote an article that cited your study[1] on vigorous exercise. The author stated that "a half-hour brisk walk every day may make you feel better, but it is not enough to ward off premature death from heart trouble."

    As a public health specialist it concerns me that we are sending mixed messages to the public. In the United States approximately 60% of...

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    Conflict of Interest:
    None declared.
  • Published on:
    Author's response

    Dear Editor

    In reply to Michael LaMonte et al.[1]:

    1. The questionnaire was modified only in relation to differences in American and British sports, for example in Britain softball, paddle ball and raquet ball are rarely played and there is very little hunting for large game. We included some activities such as mixing cement and we used approximate equivalents for this activity using a mixer or...

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    Conflict of Interest:
    None declared.
  • Published on:
    Lowering CVD risk: walk before we run
    • Michael J. LaMonte, Physiologist/Epidemiologist
    • Other Contributors:
      • Ted D. Adams, Frank G. Yanowitz

    Dear Editor

    Yu et al.[1] presented the association between self- reported leisure-time physical activity (LTPA) and 10-year cardiovascular (CVD) mortality among 1975 men who were 49-64 years and free of CVD at baseline. Based on 111 CVD deaths from 20,703 man-years of exposure, and after adjustment for selected confounding effects, the investigators concluded that higher levels of daily energy expenditure in v...

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    Conflict of Interest:
    None declared.