Comparisons of hemodynamic and cerebral oxygenation during exercise between normal weight and overweight college students
| Autor: | Chen, Yen-Huey, 陳妍慧 |
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| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 BACKGROUND: Obesity has a negative impact on cardiovascular function that may increase the risk during exercise. Few studies have investigated the hemodynamics and cerebral oxygenation in this area. The purposes of this study are (a) to compare the hemodynamic and cerebral oxygen changes during maximal exercise test between overweight(OS) and normal weight students(NS). (b) to compare the hemodynamic and cerebral oxygenation changes during vigorous exercise between OS and NS. METHODS: Eighteen male NS college students (mean BMI29.0±5.4 kg/m2 ) and 14 OS (mean BMI22.4±1.4 kg/m2) were recruited and asked to perform maximal exercise test on ergometer to measure maximum oxygen uptake ("Ṽ" O2max) and maximum power. One week later, subjects had performed a high intensity (70% max workload, Wmax) cycling exercise for 30 min. The hemodynamics CO, SV, EF of all subjects during exercises were measured with a bioelectrical impedance device (Physioflow), and cerebral oxygenation status (oxygenated hemoglobin (O2Hb), deoxygenated hemoglobin (HHb), total hemoglobin (tHb) was measured by a near infrared spectrophotometer (NIRS). STATISTICS: The collected data were analyzed with 2-way ANOVA. RESULTS: The "Ṽ" O2max of NS was significantly higher than that of OS (41.3±5.7 vs 30.0 ±5.0 ml / min / kg, p .05). During 10,20,30 minutes, the CO increases of NS (178.8%, 199.3%, 219.4%) were significantly higher than that of the OS (105.8%, 121% and 130%, respectively) (p |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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