How do elevation training masks impact respiratory muscle strength

Based on the research, elevation training masks appear to have some positive impacts on respiratory muscle strength, though their effects are not equivalent to true altitude training. Here are the key findings on how these masks impact respiratory muscle strength:

1. Improved respiratory muscle function: Studies suggest that wearing elevation training masks during exercise can strengthen the diaphragm and other breathing muscles by creating resistance when breathing

   
   

2. Increased maximal voluntary ventilation: One study found significant improvements in maximal voluntary ventilation (+19.8%) in the group using the elevation training mask during high-intensity interval training

   
   

3. Enhanced inspiratory muscle strength: Research showed significant increases in maximal inspiratory pressure (MIP) by 18% in the mask group after training

   
   

4. Delayed respiratory muscle fatigue: The mask group showed no significant decrease in MIP or increase in the tension-time index after exhaustive exercise following the training period, suggesting improved fatigue resistance of the respiratory muscles

   
   

5. Potential for improved endurance: By strengthening the respiratory muscles, the masks may help postpone respiratory muscle fatigue during exercise, potentially leading to improved endurance performance

   
   

6. Functions more like respiratory muscle training: While elevation masks don't simulate true altitude conditions, they appear to act more as respiratory muscle training devices

   
   

However, it's important to note that:

• The masks do not replicate the physiological adaptations of true altitude training, such as increased red blood cell production

  
  

• They primarily work by restricting airflow rather than altering oxygen concentration

  
  

• Some studies have found limited or no significant improvements in overall endurance performance or VO2 max compared to training without masks

  
  

In conclusion, while elevation training masks can potentially improve respiratory muscle strength and function, their benefits are primarily limited to respiratory muscle training rather than simulating the full effects of altitude training.