Publication:

中學舉重運動員不同強度挺舉之血乳酸變化探討

目的：本研究探討高中舉重運動員挺舉次最大重量試舉前、後及立定三步跳前、後之血乳酸變化情形。方法：十七名高中舉重運動員，年齡17.10 ± 1.25歲，身高166.90 ± 7.23公分，分別進行挺舉次最大重量試舉與立定三步跳檢測，於檢測前與完成三次試舉後及三次立定三步跳後接受非慣用手之指尖血液採樣，取得樣本分析其乳酸濃度。結果：於三次挺舉試舉後第三分鐘、第五分鐘與檢測前之血乳酸值達顯著差異(F=18.43, p < .05)；於三次立定三步跳後第三分鐘、檢測前、第五分鐘之乳酸值達顯著差異(F=29.42, p < .05)；不同層級與不同性別之舉重運動員完成三次挺舉試舉與三次立定三步跳之乳酸值均未達顯著差異(p >.05)。運動後的乳酸變化以第三分鐘與安靜值有所差異，不同層級、性別選手其乳酸變化並無差異，臆測顯示乳酸值可能為運動員的最大運動能力預測。

To evaluate whether the changes in blood lactate between the clean & jerk of sub-maximum weight attempts and standing-triple-jumps in senior high school weightlifting players, 17 subjects with a mean age of 17.10 ± 1.25 years and a mean weightlifting training experience of 3.80 ± 0.75 years were recruited with formal consents. The blood sample from their fingertips of non-handedness before and after the exercise of clean & jerk of sub-maximum weight attempt and standing triple jumps were taken to measure the blood lactate. It existed obvious differences in blood lactate levels collected at third and fifth minutes after the three times clean & jerk attempt ( F=19.43, p<.05) when compare to that of before. Similarly, we can also find that greater blood lactate levels collected at third and fifth minutes after the standing triple jumps. There were no observable differences exist between the various grades players as well as that of various genders. Comparing to before exercise in all of subjects, the blood lactate levels collected at third minutes after the clean & jerk of sub-maximum weight attempts and standing-triple-jumps exhibited higher concentrations, however, there were no differences in lactate concentrations between various grades players. In short, the blood lactate levels collected at third and minutes after the clean & jerk of sub-maximum weight attempts and standing-triple-jumps may act as an index to predict the maximum sport abilities.