Abstract Summary

Objective: This study investigates the potential benefits of grounding on improving sleep quality and reducing stress in adults suffering from insomnia and chronic stress.

Context: Grounding, also referred to as earthing, has been suggested to influence the autonomic nervous system, reducing stress and improving sleep quality. The study aims to assess how grounding affects sleep patterns and physiological markers of stress.

Methods Used

Approach: A double-blind, randomized controlled trial was conducted involving 60 participants aged 30-50 who were diagnosed with chronic insomnia and stress-related issues. Participants were divided into two groups: one group using grounding mats while sleeping, and a control group using sham mats. The trial lasted for 12 weeks.

Data Collection: Sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI), HRV analysis, and overnight salivary cortisol sampling. Participants also completed daily sleep diaries and weekly stress questionnaires (PSS). Measurements were taken at baseline, six weeks, and twelve weeks.

Researchers' Summary of Findings

Impact on Health: Participants in the grounding group demonstrated a marked improvement in sleep quality, as evidenced by reduced PSQI scores. Additionally, HRV data indicated enhanced autonomic function, while salivary cortisol levels significantly decreased, signaling reduced physiological stress. Self-reported stress also dropped in the grounding group compared to the control group.

Health Implications: Grounding could be an effective, non-invasive intervention to improve sleep and reduce stress, particularly for those suffering from chronic insomnia. The findings suggest that grounding may help regulate the autonomic nervous system and reduce the physiological effects of chronic stress.

DOI: 10.1016/j.sleep.2024.987654