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These investigators found an association between proximity of community exercise facilities and frequency of exercise; those individuals with a greater density of exercise facilities in the vicinity of their home were more likely to report exercising three times per week. If convenience to exercise facilities is correlated with exercise behavior, it is possible that having exercise equipment available in the home might also be correlated with exercise behavior. Therefore we studied the relationship between the number of pieces of exercise equipment in the home and the degree of physical activity.
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Jakicic et al. (1997) studied this question.
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