The Effects of Artificial Air Negative Ions on High-Altitude Acclimatization, Serum HIF1, and PWC170 Index

The observation group received air negative ion intervention every night for one week before entering the plateau (from 22:00 to 06:00). Before entering the plateau, they were in Putian City, China, where the temperature was about 28°C, humidity was about 68%, and the concentration of negative ions was approximately 800/cm³. The air negative ion converter used was the Mi Energy ET-21 model from RELTEC Medical Devices Corporation. Air negative and positive ion concentrations were measured using an ion detector (NKMH-103, HOKUTO, Japan) to ensure that each participant's room had a negative ion concentration of around 100,000/cm³.

No air negative ion intervention