Relationship between Physical Activity and Risk Factors for Cardiovascular Disease among Law Enforcement Officers

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Abstract
This investigation examined the associations between exercise habits, measures of physical fitness, and 10-year cardiovascular disease risk (CVD10, expressed as %) among 470 law enforcement officers of differing ages (range = 21 to 63 y). Only 32% of this group exercised regularly (> or = 3 days/week, > or = 20 min/session, > or = preceding 4 weeks). Only exercising subjects > 48 years old exhibited a significantly (P < .01) lower 10-year risk of a CVD event than their inactive peers (12.2 +/- 5.6 vs 16.3 +/- 6.9%, mean +/- SD). At all ages, the peak oxygen consumption per unit time was higher (50.1 +/- 6.7 vs 44.8 +/- 6.1 mL.kg-1.min-1) in the exercising than in the nonexercising group. Exercising subjects < or = 36 years old were significantly (P < .05) leaner than nonexercisers (16.3 +/- 5.5 vs 19.6 +/- 5.5% body fat, respectively) and had greater muscular endurance (45 +/- 9 vs 40 +/- 9 60-s sit-ups, respectively). These data suggest that exercise reduces CVD risk by modifying major CVD risk factors only in law enforcement officers > 48 years old.

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