Health experts have encouraged regular moderate level exercise for adults 5-7 days a week lasting 30 – 60 minutes per session to stay heart healthy. We talk about walking 15 – 20 minute miles while being able to comfortably carry on a conversation as your suggested goal. We all see other adults appearing far more fit and aggressive working out daily at a much quicker and much more strenuous pace. Experts have always wondered if they are healthier and if they fare better?
Two articles addressing this issue appear in the journal Heart. Researcher Ute Mons, MA, of the German Cancer Research Institute found that men with known stable coronary artery disease who exercised strenuously daily had more than a two fold increase in cardiovascular mortality compared to men with CAD who exercised 2 -4 times per week at a moderate level. The study was the first of its kind to look at different levels of exercise and frequencies of exercise. Certainly more research is now required to verify these findings in studies which do not rely on patient self reporting of how often, how hard and how long you work out. It is also critical to remember that this study was conducted on individuals known to have heart disease. The message to them should be clear to exercise moderately for the most benefit and least risk. The study says nothing about the benefits or risks of individuals without cardiovascular disease who exercise moderately versus strenuously.
In another related article men at age 30 who reported exercising 5 or more hours a week had an increased risk of developing the arrhythmia atrial fibrillation as compared to those who exercised more modestly. While these were both excellent preliminary works requiring further study, they both point toward moderation once again as the healthiest and best lifestyle path.
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