Stress of Kindergarten teachers: How we tried to detect and to reduce it by using a small and wearable ECG and acceleration measuring device?

In 2014 school year, four female teachers of Nazareth Kindergarten decided to resign (DRT) due to workplace stress caused by human relationships between themselves. Our preliminary interview investigation revealed there was a stressor (STR), a certain elder female teacher and her less polite words and attitude. Using small and wearable ECG and acceleration measuring device, we measured 24 hour's autonomic nervous system's activity (ASNA) and sleep behavior of the STR and surrounding teachers, and tried to evaluate their stress objectively and to understand the reason of STR's less polite behaviors. For comparison, we also measured female Mind-Body Medicine (MBM) patients suffering adjustment disorder and clinical depression.

Effect of biofield therapy in the human brain.

OBJECTIVES: The effects of Okada Purifying Therapy (OPT), a form of subtle energy (biofield) therapy that originated in Japan, were investigated. Electroencephalograms and the Profile of Mood States scores were measured using a crossover design during OPT and placebo sessions. PARTICIPANTS: Nineteen (19) healthy Japanese adults (mean age±standard deviation: 40.8±11.2 years; 10 females) with no previous experience of biofield therapy participated in this study. METHODS: Each session lasted 15 minutes. A single-blind, randomized design with a protocol consisting of regular cycles with eyes open followed by eyes closed was used. The power spectral value was calculated in θ (4.0-7.9 Hz), α (8.0-12.9 Hz), and ß (13.0-29.9 Hz) frequency ranges. RESULTS: The power spectral value of the α band at F(p1), F(p2), F(7), F(z), F(8), C(3), C(z), C(4), and P(z) increased significantly in the OPT session compared with the placebo session. Mood state was improved after both sessions, and no significant difference was found between the two sessions. CONCLUSIONS: OPT was more effective in increasing α waves in the frontal and central cortex than a placebo treatment.

Concentration effects of green odor on event-related potential (P300) and pleasantness.

The effects of eight compounds, constituting the so-called "natural green odor", including leaf alcohol, on the event-related potential (P300) were investigated. In experiments with a series of single compounds, each of these eight compounds could be characterized by an overall change consisting predominantly of an increase, a decrease or no change in the amplitude of P300, whereas in experiments with a series of two-component mixtures, noticeable synergism could not be demonstrated, contrary to our expectation. Experiments with leaf alcohol (3Z-hexenol) performed at two concentrations showed a significantly different degree of pleasantness and an increase or decrease in the amplitude of P300 depending on their concentration, suggesting that concentration is important in odorant-presentation studies.