トライアスリートにおける1年間の最大酸素摂取量の推移

－トレーニング量との関係－

抄録

　In this study, we have examined the relationship between one-year changes in VO2max and training volume (distance and duration) for a triathlete. For a triathlete (age: 27 y; height: 1.71 m; body mass: 68.1 kg), VO2max was measured almost once every week (41 times) and the training volume was recorded for approximately a year. 　The absolute and relative VO2max values were 4682 ± 168 l/min and 69.3 ± 2.78ml/kg/min, respectively. Typically, VO2max was flat except when the subject participated in a mountain marathon to a 3,776-m peak, which was held at the end of July. After the mountain marathon, VO2max increased by approximately 4% from the average level and remained at that level for approximately 3 months. 　VO2max was significantly correlated with the 9-week training duration before the VO2max measurement, especially for moderate intensities (150–170 bpm heat rate zone). VO2max has been shown to be highly correlated with the performances of many endurance sports, and it is important for athletes to increase their training durations in moderate intensities for nine weeks before endurance competitions.