Use of the heart rate-energy expenditure relationship in the individualized prescription of exercise.

evidence of an indirect nature that supports the contention that routine exercise is a necessary part of any program of preventive medicine. This is particularly true for coronary heart disease. Fox and Haskeli (1) have concluded that it is “highly prudent” to incorporate programs of increased habitual activity in the multifaceted approach to the prevention of coronary heart disease. Unfortunately, although the need for routine exercise has been clearly demonstrated, the manner in which the exercise is to be prescribed has created many questions. When prescribing an individual’s exercise program, each of the following factors needs to be specified : a) type of activity, e.g., jogging, swimming, bicycling, et cetera; b) frequency of participation, i.e., days per week; c) duration of each day’s activity; and d) the inten

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