Effect of lecturing to 200 students on heart rate variability and alpha-amylase activity

摘要: The aim of this study was to examine cardiovascular [heart rate variability (HRV)] and autonomic nervous system activation (by evaluating salivary alpha-amylase activity) that occur in professors both to, after, the delivery a lecture 200 students determine whether gender is an influencing factor upon response. Fifty-two participants (26 women 26 men) collected eight unstimulated saliva samples on 2 days (one working day which given, other non-work or rest day). They also completed Trait version State-Trait Anxiety Inventory (STAI) assess their dispositional anxiety State section STAI 15 min before 10 min after lecture, repeated at same hour control (rest) day. Perceived Stress Scale (PSS) recorded lecture. Continuous RR intervals were following HRV parameters calculated: total spectral power (P TOT); low frequency component LF); high HF); ratio LF/HF. A reduction (P < 0.05) HF HFnu increase LH/HF observed end AA activity measured teaching significantly higher than noted resting Lecturing resulted significant secretion stress marker alpha-amylase. Men did not differ trait state no differences for found.