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ABSTRACT
Apnea is the cessation of breathing, most often in reference to transient blockage of atmospheric oxygen. Voluntary apnea during varied temperature change has been linked to a number of disorders including hypertension, stroke, arrhythmias, cardiomyopathy (enlargement of the muscle tissue of the heart), heart failure, diabetes, obesity and heart attacks. It has been found that during hot weather, people sweat more and tend to suffer from dehydration. This can dry out the nasal passage, bronchial tubes, and lungs, resulting in shortness of breath. Hot air holds more water vapours than cool air, resulting in less oxygen content and higher humidity in the air. This study was aimed at investigating the effect of varied temperature on duration of voluntary apnea in apparently healthy young male subjects. A total of 60 apparently healthy youngmale subjectsbetween the age of 19-25 were recruited for this study. The experimental period lasted for 4 weeks after which the data set was taken for analysis. The experiment was conducted in the morning, afternoon and night. Result shows there was significant decrease in the mean voluntary apnea in the afternoon compared to the morning. This demonstrate that duration of voluntary apnea increases with a decrease in temperature. Future studies should expand the experimental design to accommodate more subjects and duration.
