마라톤선수의 고지훈련시 현지적응과 관련된 지표의 변화. 운동과학, 제5권 제1호. 37∼50. 본 연구의 목적은 고지환경에서의 노출과정에서 생리적 지표의 변화를 분석하여 마라톤선수의 고지훈련시 효과적인 적응방안을 제시하는데 있다. 안정시 심박수는 7-8일차까지 높게 나타났으며, 안정시 혈액세포변인은 1주 경과시 유의하게 증가하였다. 점증적 최대운동시 운동지속시간, 젖산역치 및 OBLA에서의 심박수, 운동강도 등은 1주 경과시 평지보다 감소하였다. 혈중 젖산농도 최고치는 1주 경과시 평지보다 유의하게 낮았다. 5,000m 기록은 1주 경과시 평지보다 저조했으나, 2주 경과시에는 회복양상을 나타냈다. Conconi test에서 심박수 break point가 평지보다 낮았으나, 점차 회복양상을 나타냈다. 이상에서 3주기 훈련시 1주는 저강도, 2주는 점등강도, 3주는 본격훈련기로 구성하는 것이 적절하며 고지 적응과정의 분석시 혈중 젖산농도의 적절한 활용이 강조된다.

Changes of physiological indicators in relation to the adaptation of altitude training of marathoners. Exercise Science, 5(1); 37∼50. For the present of the effective method in relation to the adaptation, this study examined the physiological alteration occuring during exercise after acute exposure to high altitude(Kunming, 1896m). Subjects were consisted of the eight Korean elite marathoners(4 male & 4 female). Resting heart rate decreased to the level of sea level, thereafter increased during 7-8 days of altitude. The numbers of erythrocytes, hematocrit values, and hemoglobin concentratins on day 7 after exposure to altitude were significantly higher than prealtitude levels. Heart rate and blood lactate concentration of the same intensity of exercise showed the higher values than the sea level during graded maximal testing on day 7 after exposure to altiude, but the maximal heart rate, peak blood lactate, and time to exhaustion showed the lower values than the sea level. On day 7 after exposure to altitude, heart rate and exercise intensity corresponding to lactate threshold were significantly lower than the prealtitude levels, and the recovery rate of heart rate and blood lactate decreased significantly from the prealtitude levels, so the time to fatigue was somewhat shorter in the altitude. Running times for track events at 5,000m on days 8 and 15 after exposure to altitude were significantly higher than prealtitude levels, but peak blood lactate after 5,000m running track test increased from the prealtitude levels. Break point of heart rate during Conconi test were lower on days 7 and 14 after exposure to altitude as compared with prealtitude test. But break point of heart rate during Conconi test were higher on day 21 exposure to altitude as compared with days 7 and 14 test. Adaptive condition to altitude showed from day 7 after exposure to altitude, but the physiological indicators in relation to the exercise capacity remain as inactive as initial stage of altitude. Therefore, training of high intensity after day 7 of altitude must be prevented for the effective adaptation to high altitude, and main training of high intensity must be performed after day 14 of altitude.