Wd. Franke et Df. Anderson, RELATIONSHIP BETWEEN PHYSICAL-ACTIVITY AND RISK-FACTORS FOR CARDIOVASCULAR-DISEASE AMONG LAW-ENFORCEMENT OFFICERS, Journal of occupational medicine, 36(10), 1994, pp. 1127-1132
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 differin
g ages (range = 21 to 63 y). Only 32% of this group exercised regularl
y (greater-than-or-equal-to 3 days/week, greater-than-or-equal-to 20 m
in/session, greater-than-or-equal-to preceding 4 weeks). Only exercisi
ng subjects > 48 years old exhibited a significantly (P < 0.1) lower 1
0-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
less-than-or-equal-to 36 years old were significantly (P < .05) leane
r than nonexercisers (16.3 +/- 5.5 vs 19.6 +/- 5.5% body fat, respecti
vely) and had greater muscular endurance (45 +/- 9 vs 40 +/- 9 60-s si
t-ups, respectively). These data suggest that exercise reduces CVD ris
k by modifying major CVD risk factors only in law enforcement officers
> 48 years old.