운동강도가 체표 및 장내 심부 온도와 대사 변인의 변화에 미치는 효과

• Published in: Exercise science (Seoul, Korea) pp. 287 - 300
• Main Authors: 김정명, 강선철, 김관훈, 안경준, 이종삼
• Format: Journal Article
• Language: Korean
• Published: 한국운동생리학회 31.08.2025
• Subjects: 체육
• ISSN: 1226-1726; 2384-0544
• DOI: 10.15857/ksep.2025.00129

PURPOSE: The relationship between core and surface body temperatures should be elucidated under various exercise conditions. This study investigated whether body temperature patterns were differentially regulated between body surface area (Tbs) and gastrointestinal core area (Tgi) during two different exercise intensities. METHODS: Ten healthy young men undertook treadmill running for 40 min at two different intensities of target heart rate (THR) set at 35% or 65% of heart rate reserve. The participants took an e-Celsius capsule with water for the core temperature measurements. Heart rate (HR) was continuously monitored using a wireless HR sensor upon exercise, and blood samples (70 μL) were collected at four different time points (30 min before exercise [PreE-30], 20 min after initiate exercise [Exe-20], 40 min after initiate exercise [Exe-40], and 30 min after recovery [Rec-30]) for subsequent biochemical analyses. The statistical significance level was set at α=.05. RESULTS: Energy expenditure, oxygen consumption, and metabolic equivalents were higher during the 65% THR than the 35% THR exercise (p<.001). Regardless of exercise intensity, Tbs decreased but Tgi increased as exercise progressed (p<.001). At Exe-20, the blood glucose level was significantly lower, but the lactic acid level was significantly higher after the 65% THR exercise than after the 35% THR exercise. Compared to PreE-30, creatinine levels increased during exercise (p<.05). PO2 remained higher than Rec-30; however, PCO2 decreased during the exercise (p<.05). Potassium ions showed an increase during exercise regardless of exercise intensities (p<.05). CONCLUSIONS: Neither Tgi nor Tbs was influenced by exercise intensities while an increase in Tgi and decrease in Tbs was observed as exercise was progressed. This may provide crucial information for understanding of temperature control upon exercise. KCI Citation Count: 0