지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
This study examined whether repeated breath-hold diving (BHD) in cold water would impact on heart rate (HR), blood lactate concentration (Lac), and oxygen saturation (SpO<sub>2</sub>) responses. Seven young healthy collegiate men (20.4 ± 0.5 yrs, 176.4 ± 5.2 cm, 68.6 ± 5.1 kg, 22.0 ± 1.3 kg·m-2) who were open water diver certified participated in two testing sessions; a cold water diving (CW; 17 ± 1℃) and a moderate water diving (MW; 27 ± 1℃). They were not acclimated to cold prior to study and familiarized with BHD. In both sessions, they repeated a 30-sec long, 5-meter deep BHD for 20 times, and rested 30 sec between each trial, except 1 min resting at 5th, 10th, 15th, and 20th trials when measurements were taken. Baseline data for HR, Lac, and SpO<sub>2</sub> outside of the pool were obtained at rest. During BHD, HR was measured at both bottom and surface using electronic HR monitor by a skilled scuba diver. HR, Lac using a finger prick method, and SpO<sub>2</sub> using pulse oximetry were measured after 5th, 10th, 15th, and 20th trials. All completed BHD sessions in both water temperature. During BHD, HR increased as the diving was repeated and the final HR was 129.7 ± 17.3 for MW and 134.1 ± 15.1 beat·min-1 for CW. No water temperature effects were found in HR. Lac changed from 1.4 ± 0.3 at rest to 4.5 ± 1.5 at the final in MW and from 1.4 ± 0.2 at rest to 5.4 ± 1.2 mmol/L at the final in CW, and the water temperature effect was noticed (p < 0.05). As BHD progressed, SpO<sub>2</sub> decreased gradually from 98.4 ± 0.5 at rest to 71.3 ± 4.3% after 20th trial in MW and from 98.6 ± 0.5 at rest to 65.6 ± 3.5% at the end of CW, and a significant interaction was noticed (p < 0.05). Data indicated that a repeated BHD at cold water resulted in an increased blood lactate and decreased blood oxygen saturation compared to relatively comfortable water temperature in an unhabituated human. No cardiac alterations were obvious during BHD in cold water.
목차
Abstract
1. 서론
2. 연구방법
3. 결과
4. 고찰
5. 결론
참고문헌
참고문헌 (48)
참고문헌 신청
Andersson, J. / 1998 / Arterial oxygen desaturation during apnea in human / Undersea. Hyperb. Med. 25:21~25
Andersson, J. P. A. / 2002 / Diving response and arterial oxygen saturation during apnea and exercise in breath-hold divers / J. Appl. Physiol 93:882~886
Bartlett, D. Jr. / 1977 / Effects of Valsalva and Mueller maneuvers on breath-holding time / J. Appl. Physiol.: Respir. Environ. Exerc. Physiol 42:717~721
Beebe, W. / 1934 / half mile down / Duel, Sloan and Pearce
Davidson, C. / 1994 / Role of cardiorespiratory abnormalities, smoking and dive characteristics in the manifestations of neurological decompression illness / Clin Sci. 86:297~303
Andersson, J. P. A. / 2002 / Diving response and arterial oxygen saturation during apnea and exercise in breath-hold divers / J. Appl. Physiol 93:882~886
Bartlett, D. Jr. / 1977 / Effects of Valsalva and Mueller maneuvers on breath-holding time / J. Appl. Physiol.: Respir. Environ. Exerc. Physiol 42:717~721
Beebe, W. / 1934 / half mile down / Duel, Sloan and Pearce
Davidson, C. / 1994 / Role of cardiorespiratory abnormalities, smoking and dive characteristics in the manifestations of neurological decompression illness / Clin Sci. 86:297~303
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UCI(KEPA) : I410-ECN-0101-2013-590-001579031