The effectiveness of diaphragmatic breathing relaxation training for improving sleep quality among nursing staff during the COVID-19 outbreak: a before and after study

This study tested a simple breathing-based relaxation technique to improve sleep and stress in frontline nurses during COVID-19. After four weeks of daily diaphragmatic breathing exercises, nurses showed clear improvements in sleep quality across multiple areas, including falling asleep faster and fewer disruptions, along with reduced anxiety. As shown in pre-post comparisons, overall sleep scores improved significantly, though depression did not change. The technique works by slowing breathing and activating relaxation responses in the body. The findings suggest that short, low-cost breathing exercises can improve sleep and reduce stress for healthcare workers during high-pressure conditions.