R. C. STEINKAMP, ef al.
STUDY
POPULATION
Altogether 2301 healthy* volunteer subjects were measured by anthropometric
methods as already described [1}. Of these, 2053 were classifiable in five arbitrary
race-sex—age categories as follows :
I.
Il.
Itt,
IV.
V.
easy
ence
Caucasian males, 25-34 years old.
tom
Caucasian females, 25-34 years old.
wat:
Caucasian males, 35-44 years old.
Caucasian females, 3544 years old.
Negro males, 25-44 years old.
Hereafter each subject category is designated by the corresponding Roman
numeral.
From each of these five categories a sampie was randomly selected for laboratory
measurements (Table 1). Work classifications of the subjects in the sample were
varied and included professional and business occupations, students, housewives,
dilu:
the
mas
Les
slor
by +
firemen, policemen and laborers.
Taste 1.
NUMBER OF SUBJECTS
Measurements
Category
Race
Total
I
Ii
Il
IV
Vv
Caucasian
Caucasian
Caucasian
Caucasian
Negro
Sex
Male and
female
Male
Male
Female
Female
Male
Age (yr)
25-44
25-34
35-44
25-34
35-44
25-44
Anthropometric
2053
478
416
379
438
342
Laboratory
——WH
TBW and
K*#°and
body density
Cs"
167
35
34
33
31
34
80
23
25
{2
16
4
Note: TBW=Total body water,
Inability to obtain subjects in significant number and the limited time available
precluded laboratory study of subjects from other race—-sex-age categories. The
anthropometric data for the 248 subjects thereby eliminated, ie., Negro females,
Orientals and subjects of other races, are the subject of a subsequent report [2].
By random selection within the five categories 172 subjects were chosen but 5
refused to cooperate, leaving 167 subjects who had laboratory studies of body
density and total body water. Of these, 80 were studied by whole-body K** and
Cs?*’ counting techniques, 68 of whom also had body density and total body water
determinations. These and an additional randomly selected sample, approximating
25 per cent of all subjects, were interviewed for a 24-hr recali of diet and of
physical activity. The results of the interview as well as of the Cs‘*’ data are
reported separately [3, 4]. Somatotype was determined for over one hundred of
the total of 2053 subjects [5].
*Healthy was defined as free of known disease, acute or chronic, upon statement of the
subject, and having had no treatment by a physician for any illness during the three months
prior to entry in the study. Any person with obvious physical deformity or loss of limb was
excluded. In addition, pregnancy or suspected pregnancy eliminated any woman from the
,
study.
al