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Journal of the Korean Geriatrics Society 1997;1(2):74-78.
Published online December 31, 1997.
Exercise Capacity in the Elderly: The Kinetics of Recovery Oxygen Consumption After Maximal Exercise
Hee Young Lim, Seong Ho Kim, Yun Jeong Lim, Hyun Sook Kim, Wann Park, Kwang Ro Joo, Sun Young Won, Byeong Cheol Song, Young Soo Jin, Young Soo Lee
1Department of Internal Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea
2Department of Sports Medicine University of Ulsan, Asan Medical Center, Seoul, Korea
노인에서의 운동능력과 운동 후 회복능력
Abstract
BACKGROUND
Limited exercise capacity is common in the elderly. Kinetics of recovery oxygen consumption plays an important role in determining exercise capacity. This study was performed to evaluate the kinetics of recovery oxygen consumption as well as peak oxygen consumption during exercise and recovery in the elderly.
METHODS
Thirty healthy volunteers were included for this study. They were divided into three groups according to their ages(20 to 39; 40 to 59; and over 60). All subjects performed symptomlimited maximal treadmill exercise.
RESULTS
Peak oxygen consumption(pVO2, ml/min/kg) was gradually decreased with the age. Half-recovery time of peak oxygen consumption(T1/2VO2) was maintained from third to sixth decades without significant changes, and then rapidly delayed in the elderly.
CONCLUSION
Kinetics of recovery oxygen consumption was rapidly and markedly delayed in the elderly and this may result in the exercise intolerance.
Key Words: Elderly, Exercise, Recovery
초 록

배경: 노인에서의 운동능력의 감소는 흔한 현상이다. 그러나 운동능력을 결정하는데 있어 중요한 운동 후 회복능력에 대해서는 노인에 있어 아직 알려진 바는 없다. 본 연구에서는 노인에서의 운동능력 뿐만 아니라 운동 후 회복 능력을 알아보고자 한다.

방법: 정상인을 대상으로 연령별로 20에서 39세, 40에서 59세, 60세 이상의 세군으로 분류하여 각 군에 10명씩 무작위 추출하여 운동심폐기능검사를 시행하였다.

결과: 최대운동능력(최대 산소 섭취량)은 연령이 증가하면서 서서히 감소하였고, 운동 후 회복능력(최대 산소 섭취량의 절반을 회복하는데 소요되는 시간)은 20대에서 50대까지는 유의한 차이 없이 유지되다가 60대 이후 급격히 감소하는 결과를 보였다.

결론: 노인에서 최대운동능력 뿐만 아니라 운동 후 회복능력 또한 감소되어 있다. 연령이 증가함에 따라 서서히 감소하는 최대 운동능력과는 달리 회복능력은 청년기에서 중년기까지 유지되다가 노년기에 급격히 감소한다.

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