Weight and Body Composition Changes during the First Three Years of College

Table 2

Weight, body mass index, and body composition changes between the college freshman and junior years.^a

	Beginning of freshman year	End of junior year	Change
Weight (kg)
All	65.0 ± 14.7	67.1 ± 16.2	2.1 ± 4.8^b
Females	59.8 ± 12.1	61.1 ± 13.7	1.3 ± 4.5^b
Males	75.1 ± 14.0	78.7 ± 14.4	3.6 ± 4.8^b
Body mass index (kg/m^2)
All	22.6 ± 4.2	23.3 ± 4.7	0.7 ± 1.6^b
Females	22.1 ± 4.0	22.5 ± 4.5	0.5 ± 1.6^b
Males	23.7 ± 4.6	24.8 ± 4.5	1.1 ± 1.4^b
Body fat (percentage)
All	18.3 ± 7.5	21.0 ± 7.4	2.7 ± 3.3^b
Females	22.0 ± 5.3	24.2 ± 5.7	2.2 ± 3.3^b
Males	11.0 ± 5.6	14.7 ± 6.0	3.7 ± 2.9^b
Fat free mass (kg)
All	52.8 ± 11.6	52.5 ± 11.8	0.3 ± 2.6
Females	46.1 ± 6.0	45.6 ± 5.9	−0.5 ± 2.2^b
Males	66.2 ± 7.9	66.3 ± 7.8	0.1 ± 3.2
Fat mass (kg)
All	12.0 ± 8.1	14.3 ± 9.1	2.3 ± 3.5^b
Females	13.6 ± 7.5	15.4 ± 9.1	1.8 ± 3.5^b
Males	8.9 ± 8.6	12.2 ± 9.0	−3.3 ± 3.0^b
Waist (cm)
All	74.60 ± 8.81	74.88 ± 9.37	0.28 ± 3.25
Females	71.22 ± 6.68	71.27 ± 6.68	0.05 ± 2.77
Males	81.69 ± 8.59	82.45 ± 9.73	0.76 ± 4.06

^a𝑛=51 males, 𝑛=98 females.
^bStatistically significant (<0.05) change from freshman year.