• Title/Summary/Keyword: 젖산 역치

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Effects of Sports Drink Including the Extract from Prunus mume on the Changes of Respiratory Variables, Heart Rate, and Blood Lactate Concentration in Submaximal Exercise (매실함유 음료섭취가 장시간 운동시 심박수, 호흡가스 변인 및 혈중 젖산농도 변화에 미치는 영향)

  • 김기진;배지현
    • Journal of the East Asian Society of Dietary Life
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    • v.9 no.2
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    • pp.177-187
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    • 1999
  • This study was designed to investigate the effects of sports drink including the extract from Prunus mume on the changes of oxygen uptake, minute ventilaton, heart rate, and blood lactate concentration during 1 hour treadmill running exercise corresponding to 75%VO$_2$max. Subjects were 16 male athletes(long distance runners and tennis players). The changing patterns of oxygen uptake and minute ventilation showed no significnat difference among all types of sports drink, but the minute vetilation of the placebo group showed a higher value than type I group during submaximal exercise. Although the changing patterns of heart rate and blood lactate concentration showed no significnat difference among all types of sports drink, but type E group showed a lower heart rate compared to Placebo group. And blood lactate concentration of placebo group showed a higher value compared to the value corresponding to lactate threshold during submaimal exercise. but the other types of sports drink showed a lower value of blood lactate concentration. Especially blood lactate threshold of type D and E groups showed a lower value (range from 1.44 to 2.00mM) during submaximal exercise. In these results, the sports drink including the extract from Prunus mume showed no significant effects to the changes of oxygen uptake, minute ventilaton, heart rate, and blood lactate concentration during 1 hour treadmill runnuing exercise corresponding to 75%VO$_2$max. But it could be suggested the positive effects of the intake of sports drink including the extract from Prunus mume on the inhibition of exercise-induced fatigue during submaximal exercise, because of the lower changing Patterns of heart rate, blood lactate concentration, and ventilation efficiency in this results.

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Training and Performances of the HPA Pilot (인간동력항공기 조종사 훈련 및 성과)

  • Chang, Sang-Hyun;Lee, Jeong-Won
    • Aerospace Engineering and Technology
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    • v.12 no.2
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    • pp.202-208
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    • 2013
  • This paper describes establishment of a pilot training plan, training and an outcome for Human Powered Aircraft which can take off, landing and fly using the energy generated by only human muscle without using mechanical power. To achieve these, a special trainer made a plan by considering physical trait of each pilot and each pilot was performed an indoor training for principle physical improvement, an outdoor training for generating sustainable power, a simulation training to learn maneuver ability. The pilot mastered the basic maneuver ability needed to fly and each pilot was lose their weight and experienced their improved physical strength via the training.