스쿠버 다이빙 경력에 따른 무감압한계 잠수환경에서의 반복잠수가 Epinephrine, Norepinephrine 및 Dopamine 변화에 미치는 영향

The purpose of this study to verify the effects of repetitive dive in the No Decompression Limit(NDL) diving environment on the changes in Epinephrine, Norepinephrine and Dopamine depending on scuba diving experience. This study targeted 9 healthy adults of an unskilled group with less than 40 diving frequencies and 10 ones of a skilled group with over 40 diving frequencies. The study findings are as follows. After repetitive dive, Epinephrine decreased to 29.14% in skilled divers (p<.001) and increased to 48.34% in unskilled divers, so there was a statistically significant difference (p<.05). Norepinephrine decreased to 40.22% in skilled divers, so there was a statistically significant difference (p<.001). Norepinephrine decreased to 4.21% in unskilled divers, but there was no statistically significant difference. Dopamine decreased to 75.02% and 59.96% in skilled divers and unskilled divers respectively, so both groups showed statistically significant differences (p<.001). Norepinephrine and Dopamine declined in both skilled and unskilled groups after repetitive dive in the NDL diving environment, but Epinephrine decreased in the skilled group, while it increased in the unskilled group. This is because long stay or exercise in the cold environment led to an increase in heat production for maintaining a body temperature, the metabolic rate rose, shivering was caused by the decrease in body temperature and excessive stress lasted long during a dive.