成人女性의 心肺機能과 回復方法에 따른 血中乳酸 및 Catecholamine 變化에 關한 硏究

Changes of blood lactate and catecholamine from recovery patterns and cardiopulmonary function in young adult women

&nbsp;&nbsp;The purposes of this study were 1) to investigate the effect of blood lactate disappearance during maximal exercise load and recovery; 2) to determine changes of blood lactate concentrations during incremental maximal exercise for the training and non-training groups; 3) to estimate changes of chrdiopulmonary function during exercise and recovery; 4) to analyze changes of plasma epinephrine, and norepinephrine during exercise and recovery.<BR>&nbsp;&nbsp;The subjects of this study consist of a total of 16 young adult women with a mean age of 22.1 year (7 basketball athletes and 9 women students) who are following at Physical Education department in S womens university.<BR>&nbsp;&nbsp;Incremental maximal exercise load test and active recovery (?o₂max 40%) and passive recovery after Vo₂max 100% were conducted on the treadmill three times at a week interval.<BR>&nbsp;&nbsp;1. The results of this study indicated that with increasing time of exercise during the same intensity of exercise oxygen uptake was significantly(p＜.05) higher in non-training group than training group. However, oxygen uptake was high in training group(52.34±9.87ml/㎏/min) compare to non-training group(46.07±7.01ml/㎏/min) at the level of all-out exercise.<BR>&nbsp;&nbsp;2. Respiratory exchange ratio at 10min absolute maximal exercise load was significantly high(p＜.05) in non-training group(0.95±0.05) compare to training group(0.90±0.05).<BR>&nbsp;&nbsp;3. Heart rate at rest, during exercise, and recovery was high in non-training group compare to training group. Especially significant difference(p＜.05) could be observed in heart rate between training(148.6±18.3beats/min, 175.0±12.7beats/min) and non-training groups(164.1±18.3beats/min, 189±10.1 beats/min) at 6 and 10 min exercise.<BR>&nbsp;&nbsp;4. Ventilation volume increased with increasing time and intensity of exercise and there was no difference hetween training and non-training groups.<BR>&nbsp;&nbsp;5. Blood lactate concentrations during 6, 8, 10, and 12 min of incremental maximal exercise load were significantly (p＜.05) low in training group(1.51±0.41 mM/l, 1.830mM/l, 1.84±0.37mM/l, 3.11±0.33mM/l) compare to non-training group(2.28±0.5ImM/l, 3.09±0.50mM/l, 4.85±1.16mM/l, 6.09±0.99mM/l).<BR>&nbsp;&nbsp;6. Blood lacate concentrations at recovery after a brief period of maximal exercise load was found to be significantly low (p＜.01) in trainging group compare to non-training group.<BR>&nbsp;&nbsp;7. Recovery rate of blood lactate after a brief period of maximal exercise load was significantly high(p＜.05) in active recovery method(88.25±10.85%, 76.30± 14.67%) compare to passive recovery method(42.41± 8.93%, 46.69±13.50%).<BR>&nbsp;&nbsp;8. There was no significant change in plasma epinephrine for training 76.27±22.40pg/ml, 60.36± 34.53pg/ml and non-training 72.37±23.46pg/ml, 77.10±28.58pg/ml groups at passive and active recovery after a brief period of maximal exercise load. However, plasma epinephring was significantly low(p＜.05) in training group compare to non-training group.<BR>&nbsp;&nbsp;9. There was no significant change in plasma norepinephrine for training(232.34±33.16pg/ml, 263.53 ±93.25pg/ml) and non-training(244.37±91.87pg/ml, 244.97±47.44pg/ml) groups at passive and active recovery after a brief period of maximal exercise load. However, no significant difference was found in plasma norepinephrine between training and non-training groups.<BR>&nbsp;&nbsp;10. There were no differences in epinephrine and norepinephrine after a brief period of maximal exercise load for active(271.48±72.16pg/ml, 297.96±101.21pg/ml) and passive recovery(271.70±81.28pg/ml, 311.69±109.38pg/ml) respectively.<BR>&nbsp;&nbsp;11. No relationships could be observed between epinephrine and norepinephrine concentrations and maximal capillary blood lacate values after a brief period of maximal exercise load.<BR>&nbsp;&nbsp;In conclusion, blood lactate concentrations