Limitations and future research
respiratory diseases, asthma, COPD
RESPIRATORY DISEASE, DISEASE, ASTHMATICS, CHRONIC OBSTRUCTIVE PULMONARY DISEASE, COPD, ASTHMA, HEAT
Although different mask types and exercise intensities (load levels) have been tested in this study, the influence of ambient temperature was not considered. It is now known that the subjective perception of heat and humidity underneath the mask depends on the ambient temperatureAlthough some subjects with mild asthma were included in our collective, a subgroup analysis of e.g. asthmatics was not possible. The physiological and subjective effects of wearing masks on subjects with respiratory diseases like asthma or chronic obstructive pulmonary disease (COPD) should be further elucidated in studies to come. One former study reported significant interactions in such manner that disease status modified the effect of respirator type