Table 4 Changes in antioxidant activity following 6 wk intervention with daily walnut consumption1
| Â | Walnut intervention dose | Â | |||
|---|---|---|---|---|---|
| Â | 21 g/d | 42 g/d | Â | ||
Measure | % Change from baseline | P (within group) | % Change from baseline | P (within group) | P (between group) |
Antioxidant capacity: | Â | Â | Â | Â | Â |
   ORAC | 2.3 ± 16.4 | 0.534 | 5.6 ± 15.5 | 0.115 | 0.435 |
   ORAC-pca | -2.1 ± 29.6 | 0.752 | 8.2 ± 29.4 | 0.218 | 0.322 |
   FRAP | -3.1 ± 10.6 | 0.197 | -0.8 ± 12.1 | 0.768 | 0.503 |
   TAP | 0.9 ± 6.8 | 0.572 | -0.7 ± 9.7 | 0.745 | 0.505 |
Lipid peroxidation biomarker: | Â | Â | Â | Â | Â |
   MDA | 8.2 ± 40.6 | 0.367 | 2.1 ± 27.9 | 0.734 | 0.522 |
Antioxidant status: | Â | Â | Â | Â | Â |
   Total phenols | -2.0 ± 7.0 | 0.202 | -2.0 ± 5.9 | 0.135 | 0.995 |
   Total thiols | -2.2 ± 13.2 | 0.476 | 1.8 ± 32.2 | 0.813 | 0.680 |
   GPX | -1.3 ± 7.8 | 0.452 | -2.4 ± 7.5 | 0.164 | 0.646 |