Table 1. Changes in hematological parameters in subjects consuming the purple-fleshed sweet potato beverage over a 4-week study period with a 2-week washout period.
| Pre-studya | Day 1 | Day 15 | Day 29 | Day 43 | p-valuec | |
|---|---|---|---|---|---|---|
| ALT (IU/l) | 39 ± 16 | 22 ± 10 | 24 ± 10 | 29 ± 14 | 34 ± 14 | <0.0001 |
| AST (IU/l) | 32 ± 12 | 28 ± 5 | 27 ± 6 | 30 ± 8 | 30 ± 7 | 0.0732 |
| GGT (IU/l) | 53 ± 29 | 51 ± 26 | 49 ± 24 | 52 ± 26 | 55 ± 31b | 0.5672 |
a Pre-study data are shown for information purposes but were not included in the statistical analysis.
b One outlier with a value of 94.5 IU/l on day 43 was removed.
c A p-value of less than 0.05 was considered to be statistically significant, and a p-value between 0.05 and 0.1 was considered a trend toward significance.