Table 1

Lifestyle variables for the year preceding academy entrance

Variable
Mean ± SD (Caucasians)
Mean ± SD (African Americans)
Mean ± SD (Asians)

Age (years)
18.7 (± 1.05)
18.5 (± 0.94)
18.5 (± 0.73)

Variable
Percentage (n)
Percentage (n)
Percentage (n)

Exercise (hrs/week)



     1–3
5.5 (36)
6.3 (4)
10.5 (4)
     4–6
19.5 (127)
23.3 (15)
19.5 (6)
     7–10
30.9 (201)
28.1 (18)
30.9 (13)
     11+
44.1 (287)
42.2 (27)
44.1(15)
Milk (glass/day)



     0
4.4 (29)
4.7 (3)
7.9 (3)
     < 1
17.0 (111)
28.1 (18)
13.2 (5)
     1–2
47.4 (309)
43.8 (28)
50.0 (19)
     3+
31.1 (203)
23.4 (15)
28.9 (11)
Caffeinated (Drinks/day)



     None
17.1 (111)
14.3 (9)
36.8 (14)
     1–3
70.3 (457)
76.2 (48)
57.8 (22)
     3+
12.6 (82)
9.5 (6)
5.3 (2)
Alcohol Consumption



     Less than once a month
57.8 (375)
78.1 (50)
66.7 (22)
     1–3 times a month
22.7 (147)
15.6 (10)
30.3 (10)
     1–2 times a week
14.6 (95)
4.7 (3)
9.1 (3)
     3–5 times a week
4.0(26)
1.6(1)
0.0 (0)
     daily
0.9 (6)
0.0 (0)
0.0 (0)
Smokers
5.1 (41)
4.7 (3)
13.1 (5)

Ruffing et al. Nutrition & Metabolism 2006 3:14   doi:10.1186/1743-7075-3-14