The purpose of this study was to determine the autonomic nervous system activation during sleep after the day shift and during naps during the night shift among nurses working 16-h shifts and sleep characteristics using a sleep-related scale. The participants were 14 mid-career nurses in their 20s–30s who worked night shifts about once a week. Sleep quality (PSQI-J) was investigated using a self-administered questionnaire method, measuring heart rate variability, low-frequency power (LF), high-frequency power (HF), and LF/HF values using a wearable heart rate sensor to determine sleep status during sleep after day shifts and during naps in night shifts. The results revealed that nurses working 16-hour shifts showed signs of sleep disturbance due to social jet lag and may have increased difficulty sleeping, especially when the sympathetic nervous system is dominant during naps in the night shift. It was also evident that nurses with LF/HF values >4.0 had high autonomic nervous system activation, which may prevent them from securing quality sleep.

In 2022, the Japan Society for Healthcare Administration (JSHA) launched the Young Members Association (YMA) for exchange and study among young members, presentation of their achievements, and career development. As an activity of the YMA, we conducted the first hospital tour at Toho University Medical Center Ohashi Hospital. Thirteen individuals, including graduate students, medical professionals, and researchers, participated in the tour, comprising lectures by the administrative director, deputy director, and others, a hospital tour, and group discussions. Ohashi Hospital downsized from 433 to 319 beds with relocation, and efforts and design innovations were made to achieve high turnover and unit price. Consequently, the tour participants deepened their learning on architecture and management. Simultaneously, they gained new perspectives and suggestions for future activities by exchanging with other participants from different backgrounds. The YMA will continue to plan hospital tours and other events to promote the development of the JSHA.