일회성 유산소 운동이 흡연자의 동맥경직도, 대뇌혈류량 및인지기능에 미치는 영향: 중강도 지속성 vs. 고강도 인터벌
Altered Arterial Stiffness, Cerebral Blood Flow and Cognitive Function in Young Smokers in Response to One-Bout of Aerobic Exercise: MICE vs. HIIE
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PURPOSE: This study aimed to compare the acute effects of high-intensity interval exercise (HIIE) with moderate-intensity continuousexercise (MICE) on arterial stiffness, cerebral blood flow and cognitive function in young smokers. METHODS: Young smokers (23.1 years & 7.2 pack years) were randomly assigned to either MICE (n=5) or HIIE (n=4) group. MICEwas implemented at 70% of HRmax for 30 minutes. HIIE was performed at 70% and 90% of HRmax for 24 minutes. Central arterystiffness was assessed by aortic pulse wave velocity (cfPWV), augmentation index (AIx) at pre and post-exercise, and 30 minutes, 1hour, 2 hours, 24 hours following the exercises. Cerebral blood flow was continuously monitored using near-infrared spectroscopy techniquebefore and during exercise, and at 30 minutes, 1 hour, 2 hours, and 24 hours following the exercises. Cognitive function wasassessed by Stroop Color-Word test at pre-exercise, and 30 minutes and 24 hours following the exercises. RESULTS: There was no significant group by time interaction in cfPWV, AIx, cerebral blood flow (HbO2) level, and cognitive function. Compared with MICE, cfPWV was increased (p=.01) at 30 minutes but AIx was decreased (p=.02) at 1 hour following HIIE. WhenMICE and HIIE combined, arterial stiffness and cerebral blood flow measures, and cognitive function parameters were improved followingeven one-bout of exercise (p≤.049). Change in AIx was associated with change in cognitive function at 30 minutes followingthe exercises (r=.69, p=.06). CONCLUSIONS: Even one-bout of either MIIE or HIIT acutely improves aortic wave reflection, cerebral blood flow and cognitivefunction in young smokers. The intensity of aerobic exercise does not seem to make meaningful differences in the positive effects onarterial stiffness, cerebral blood flow, and cognitive function in young smokers if both exercises have the same volume.
Abstract
PURPOSE: This study aimed to compare the acute effects of high-intensity interval exercise (HIIE) with moderate-intensity continuousexercise (MICE) on arterial stiffness, cerebral blood flow and cognitive function in young smokers. METHODS: Young smokers (23.1 years & 7.2 pack years) were randomly assigned to either MICE (n=5) or HIIE (n=4) group. MICEwas implemented at 70% of HRmax for 30 minutes. HIIE was performed at 70% and 90% of HRmax for 24 minutes. Central arterystiffness was assessed by aortic pulse wave velocity (cfPWV), augmentation index (AIx) at pre and post-exercise, and 30 minutes, 1hour, 2 hours, 24 hours following the exercises. Cerebral blood flow was continuously monitored using near-infrared spectroscopy techniquebefore and during exercise, and at 30 minutes, 1 hour, 2 hours, and 24 hours following the exercises. Cognitive function wasassessed by Stroop Color-Word test at pre-exercise, and 30 minutes and 24 hours following the exercises. RESULTS: There was no significant group by time interaction in cfPWV, AIx, cerebral blood flow (HbO2) level, and cognitive function. Compared with MICE, cfPWV was increased (p=.01) at 30 minutes but AIx was decreased (p=.02) at 1 hour following HIIE. WhenMICE and HIIE combined, arterial stiffness and cerebral blood flow measures, and cognitive function parameters were improved followingeven one-bout of exercise (p≤.049). Change in AIx was associated with change in cognitive function at 30 minutes followingthe exercises (r=.69, p=.06). CONCLUSIONS: Even one-bout of either MIIE or HIIT acutely improves aortic wave reflection, cerebral blood flow and cognitivefunction in young smokers. The intensity of aerobic exercise does not seem to make meaningful differences in the positive effects onarterial stiffness, cerebral blood flow, and cognitive function in young smokers if both exercises have the same volume.
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