Table 4.
Association between dietary fiber and indicators of body composition and fasting insulin in total and plausible samples, B(SE)
| Predictors | Fat mass (kg) | % Body Fat | BMI1 (kg/m2) | Waist Circum. (cm) | Fasting Insulin (IU/ml) |
|---|---|---|---|---|---|
| Total Sample (n=298) | |||||
| Dietary Fiber (g) | −0.17(0.04)*** | −0.14(0.05)** | −0.06(0.03)* | −0.36(0.19)+ | −0.10(0.03)** |
| Age (yrs) | 0.40(0.18)* | 0.36(0.21)+ | 0.09(0.11) | 0.90(0.82) | −0.34(0.15)* |
| Race (white=0, non-white=1) | −0.03(−0.77) | −0.23(0.91) | 0.54(0.49) | 2.4(3.7) | 0.46(.67) |
| Sex (male=0, female=1) | 20.61(1.46)*** | 9.57(0.82)*** | −2.13(0.44)*** | −30.96(3.21)*** | 0.72(0.60) |
| Current Smoker (yes=1, no=0) | 1.10(0.79) | 1.28(0.93) | 0.42(0.50) | 4.40(3.64) | 1.24(0.68)+ |
| Physical Activity | −0.31(0.55) | −0.19(0.65) | 0.16(0.35) | 1.47(2.55) | 0.06(0.48) |
| Energy Intake (kcal) | 0.001(0.0005)*** | 0.001(0.0005)* | 0.0003(0.0003) | 0.002(0.002) | 0.0005(0.0003) |
| Plausible Sample (n=123) | |||||
| Dietary Fiber (g) | −0.24(0.07)*** | −0.23(0.08)** | −0.11(0.04)** | −0.67(0.30)* | −0.15(0.05)** |
| Age (yrs) | 0.52(0.30)+ | 0.56(0.34) | 0.18(0.19) | 1.53(1.31) | −0.31(0.24) |
| Race (white=0, non-white=1) | 0.36(1.26) | 0.361.40 | 0.77(0.77) | 4.53(5.45) | 1.61(0.99) |
| Sex (male=0, female=1) | 20.10(2.44)*** | 11.58(1.63)*** | −1.06(0.89) | −19.37(6.28)** | 2.13(1.15)+ |
| Current Smoker (yes=1, no=0) | 1.41(1.33) | 1.74(1.48) | 0.86(0.82) | 5.99(5.75) | 0.65(1.05) |
| Physical Activity | −1.55(1.34) | −1.27(1.48) | 0.37(0.81) | −3.49(5.74) | 0.62(1.05) |
| Energy Intake (kcal) | 0.002(0.001)+ | 0.004(0.001)* | 0.001(0.0008)+ | 0.02(0.01)** | 0.002(0.001)+ |
NOTE: Model with fat mass (g) as dependent variable adjusted for fat free mass (g);
1
BMI = body mass index;
+
p<0.10,
*
p<0.05,
**
p<0.01,
***
p<0.001;