維生素C補充對游泳選手運動表現之影響

本研究的主要目的為觀察游泳選手在兩個不同訓練期：賽前（高強度訓練期）與賽季後（低強度訓練期），進行連續三週維生素C補充，對於運動表現之影響。二十位大學甲組游泳選手參與本研究，這些選手於此兩時期分別每天進行2-3小時游泳訓練，在開始進行維生素C補充（每天500毫克）前與後，分別測量400公尺自由式游泳表現、運動前、後乳酸濃度及登階測驗之心跳恢復狀態之測量。在高強度訓練期，筆者發現運動訓練過程補充維生素C顯著提高400公尺自由式游泳表現、降低運動後乳酸濃度、顯著加速登階測驗之心跳恢復速度。在低強度訓練期，補充維生素C雖然仍可使運動後乳酸濃度降低，但對於登階測驗之心跳恢復速度與運動表現並無提昇效果。本研究顯示，補充維生素C對於游泳運動表現的提升效果可能僅發生於高負荷訓練期。

關鍵字

血乳酸；心肺功能；游泳成績

並列摘要

The purpose of current study was to investigate the effect of oral vitamin C supplementation on swimming performance under two different training periods with high-(before competition) or low-intensity (off-season). Twenty first-tier college swimmers participated in this study and a daily 500 mg of vitamin C was orally ingested 30 mm before training in both periods. We measured the 400-m swimming performance, post-exercise lactate level, and heart rate recovery following 3-min step test before and after vitamin C supplementation. In the high-intensity training period, vitamin C supplementation significantly lowered post-exercise lactate level and improved heart rate recovery following step test and 400-m swimming performance. In the lowintensity period, despite that vitamin C supplementation lowered the post-exercise lactate level, there was no improvement in heart rate recovery following 3-min step test and swimming performance. In conclusion, we found that vitamin C supplementation can improve swimming performance only when training was intensive.

並列關鍵字

blood lactate ； cardiopulmonary Function ； swimming performance

參考文獻

Balakrishnan, S. D.,Anuradha, C.V.(1998).Exercise, depletion of antioxidants and antioxidant manipulation.Cellular Biochemical Function.16,269-275.

Google Scholar

Barclay, J.,Hansel M.(1991).Free radicals may contribute to skeletal muscle fatigue.Canadian Journal of Physiology and Pharmacology.69,279-284.

Google Scholar

Foster, C. Costill, D. L.,Fink, W. J.(1979).Effects of preexercise feedings on endurance performance.Medicine and Science in Sports and Exercise.11,1-5.

Google Scholar

Foster, C.,Pollock, M.,Farrell, Y.,Maksud, M.,Anholm, J.,Hare, J.(1982).Training responses of speed skaters during a competitive season.Research Quarterly Exercise and Sports.53,242-246.