. Author manuscript; available in PMC: 2011 Jan 1.

Published in final edited form as: Am J Hum Biol. 2010 Jan–Feb;22(1):76–82. doi: 10.1002/ajhb.20956

TABLE 2.

Expected mean skeletal muscle (SM) values and slopes estimated from the regression models for women and men in 4 ethnic groups^a

	Value
Men (n = 469)
Expected mean SM at age 27 years (kg)^b
African American	35.5
Whites	33.3
Hispanic	34.0
Common slope before age 27 years (kg/y)	0.865
Slope after age 27 years (kg/y)^c
African American	−0.181
Whites	−0.126
Hispanic	−0.203
Women (n = 1280)
Expected mean SM at age 27 years (kg)^b
African American	21.5^A
Asian	19.5^B
Whites	20.3^B
Hispanic	19.9^B
Common slope before age 27 years (kg/y)	0.208
Slope after age 27 years (kg/y)^c
African American	−0.111
Asian	−0.069
Whites	−0.065
Hispanic	−0.048

Means among the ethnic groups by sex with different superscript uppercase alphabets are significantly different, two-tailed P < 0.05.

All expected mean SM values were evaluated after adjustment for baseline weight and height.

Slopes across the 4 ethnic groups differ as the test of the age by ethnicity interaction was found significant P < 0.05.