Table 2

Determinants of distal vastus medialis and vastus lateralis cross-sectional areas


Univariate regression coefficient (95% CI)
Multivariate regression coefficient (95% CI)a
R2 for modela

Vastus medialis cross-sectional area, mm2
     Age, years
-1.39 (-7.78, 4.99)
-7.1 (-11.7, -2.6)b
0.532
     Gender
-415.9 (-470.2, -361.5)b
-391.6 (-443.0, -340.2)b
0.532
     Body mass index, kg/m2
27.5 (18.9, 36.2)b
21.7 (15.2, 28.2)b
0.532
     Participation in vigorous physical activity, yes/no
118.6 (47.0, 190.1)b
90.0 (38.2, 141.7)b
0.532
Vastus lateralis cross-sectional area, mm2
     Age, years
-1.7 (-4.4, 0.94)
-3.3 (-5.8, -0.8)b
0.192
     Gender
-105.6 (-133.0, -78.2)b
-106.0 (-134.0, -78.0)b
0.192
     Body mass index, kg/m2
4.8 (1.1, 8.6)c
3.3 (-0.2, 6.8)
0.192
     Participation in vigorous physical activity, yes/no
23.2 (-6.8, 53.3)
10.1 (-18.1, 38.3)
0.192

aAge, gender, body mass index, and participation in vigorous physical activity included in multivariate regression equation. bP < 0.01. cP < 0.05. CI, confidence interval.

Berry et al. Arthritis Research & Therapy 2008 10:R143   doi:10.1186/ar2573