| 摘要: | 目的：高強度衰竭運動後代謝性指標恢復速率研究。方法：以15位年滿20歲的大專男性運動選手為受試對象，利用跑步機以80%VO2max的強度跑至衰竭為止，並分別於運動前、衰竭運動後立即、0.5、1、2、24及48小時進行肘窩靜脈採血分析衰竭運動前後不同時間點的BUN、CK及LDH等代謝性指標變化，所得數據以重複量數單因子變異數分析(one-way ANOVA)進行資料處理。結果：BUN、CK、LDH等代謝性指標於衰竭運動後都明顯增加(P>.05)，其中BUN與LDH於運動後2小時達到最高點，於24小時恢復；CK於運動後24小時達到最高點，於48小時恢復。結論：高強度衰竭運動對BUN及LDH影響時間較短，可在24小時內恢復；對CK的影響會持續至24小時以後，於48小時內恢復，因此在實施高強度的衰竭運動時，至少應有一天的間隔時間以利代謝機能恢復。
Purpose: To investigate the recovery rate of metabolic indicators after high-intensity exhaustive exercise.
Method: Subjects performed exercise to exhaustion on a motorized treadmill following the Ellestard protocol to determine the maximal aerobic power (VO2max). The speeds for 80% exhausted running was calculated for each subjects as the suggestion of CSM: VO2=(0.2×speed)+(0.9×speed×grade)+3.5. Five milliliters of blood samples were intravenously collected from the subjects before and after the exhaustive exercise. The sampling times were 0, 0.5, 1, 2, 24, 48 hours after the exhaustive exercise, respectively. Analysis: Concentrations of blood urea nitrogen (BUN), creatine kinase (CK), and lactate dehydrogenase (LDH), respectively, were determined as the biomarkers of human metabolism. The data were analyzed by the one-way analysis of variance (ANOVA).
Results: It was shown that the concentrations of metabolic indicators BUN, CK, and LDH all increased significantly after the exhaustive exercise (P>.05). Concentrations of both BUN and LDH rose to a maximum 2 hours after the exercise and subsequently gradually recovered till 24 hours after the exercise. Concentration of CK increased with the time, to a maximum at about 24 hours, after the exercise, thereafter decreased with the time till 48 hours after the exercise.
Conclusion: High-intensity exhaustive exercise affected the concentrations of metabolic indicators BUN, CK, and LDH, especially for CK till 24 hours after the exercise. It was suggested that the exhaustive exercise should be performed accompanying with a time period, i.e., 24 hours, enough for the recovery of metabolic revitalization. |
