Investigation of anti-stress effect associated with ingestion of pickled sun-dried daikon radish ~A randomization single-blind, placebo-controlled study

INTERVENTION: The subjects take 50g test food (pickled sun‐dried daikon radish) before stress workload. The subjects take 50g placebo food (not containing GABA pickled sun‐dried daikon radish) before stress workload. CONDITION: Healthy adults PRIMARY OUTCOME: Mood profile test (POMS) SECONDARY OUTCOME: 1.VAS scale; 2.Change of workload on the Uchida‐Kraepelin test; 3.Activity of saliva amylase; 4.Adverse events. INCLUSION CRITERIA: 1. Subjects who are judged as healthy by self‐reported health questionnaire. 2. Subjects who agree to participate in this study with a written informed consent after receiving sufficient explanation relating to this study.