Fig. 5From: The responses of subjective feeling, task performance ability, cortisol and HRV for the various types of floor impact sound: a pilot studySubjective annoyance for the various types of floor impact sound (FIS). Abbreviation: B, bang machine; T, tapping machine; I, impact ball; BT, B and T; TI, T and I; BI, B and IBack to article page