Plasma I-FABP concentrations were determined using EDTA plasma via enzyme-linked immunosorbent assay kits (HK406, Hycult Biotech Inc., Pennsylvania, USA). All analyses for each participant were completed within the same run for each measure. The intra-assay coefficient of variation was 4.4%. We planned to analyze absolute values. However, since there was a large inter-participant variability in plasma I-FABP in the present study as was the case in a previous study [21 (link)], we presented plasma I-FABP concentration as changes compared with fasting (0900) values.
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