- 期刊
Higher Prevalence of Exercise-Associated Hyponatremia in Triple Iron Ultra-Triathletes Than Reported for Ironman Triathletes
並列摘要
In a recent study of male and female ultra-marathoners in a 161-km ultra-marathon, the prevalence of exercise-associated hyponatremia (EAH) was higher than reported for marathoners. Regarding triathletes, the prevalence of EAH has been investigated in Ironman triathletes, but not in Triple Iron ultra-triathletes. The aim of this study was to investigate the prevalence of EAH in male ultra-triathletes competing in a Triple Iron ultra-triathlon over 11.4 km swimming, 540 km cycling, and 126.6 km running. Changes in body mass, fat mass, skeletal muscle mass, total body water, haematocrit, plasma volume, plasma sodium concentration ([Na(superscript +)]) and urine specific gravity were determined in 31 male athletes with (means ±standard deviation) 42.1 ±8.1 years of age, 77.0 ±7.0 kg body mass, 1.78 ±0.06 m body height and a BMI of 24.3 ±1.7 kg/m^2 in the 'Triple Iron Triathlon Germany'. Of the 31 finishers, eight athletes (26%) developed asymptomatic EAH. Body mass, fat mass, skeletal muscle mass, and haematocrit decreased, plasma volume increased (P ＜ 0.05), plasma [Na(superscript +)], total body water and urine specific gravity remained stable. The decrease in body mass was related to both the decrease in fat mass and skeletal muscle mass (P ＜ 0.05), but was not related to overall race time, the change in plasma [Na(superscript +)], post-race plasma [Na(superscript +)], or urine specific gravity. The prevalence of EAH was higher in these Triple Iron ultra-triathletes compared to existing reports on Ironman triathletes. Body fluid homeostasis remained stable in these ultra-triathletes although body mass decreased.
參考文獻
延伸閱讀
- 巫錦霖、林漢斯、張振崗、邱志暉（2019）。The effect of carbohydrate and branched-chain amino acids supplementation on endurance performance in acute hypoxia environment。體育學報，52(S)，61-71。https://doi.org/10.3966/10247297201903520S005
- Polyviou, T. P., Pitsiladis, Y. P., Morales, C. C., Brown, B., Speakman, J. R., & Malkova, D. (2015). The Effects of Hyperhydrating Supplements Containing Creatine and Glucose on Plasma Lipids and Insulin Sensitivity in Endurance-Trained Athletes. Journal of Amino Acids, 2015(), 10-17. https://doi.org/10.1155/2015/352458
- 魏振展、廖翊宏、陳宗與、史真真（2017）。Benefits and Practical Applications of Hypoxic Trianing on Promoting Sport Performance in Triathletes。運動教練科學，(48)，107-121。https://doi.org/10.6194/SCS.2017.48.10
- 魏振展（2018）。Effects of Short-Term Respiratory Muscle Training on Body Composition and Exercise Performance in Triathletes。運動研究，27(2)，37-51。https://doi.org/10.6167/JSR.201812_27(2).0004
- 蔣光明、葉豐榮、吳裕益（2017）。A Research on Relation between Outstanding Triathletes Specific Physical Capabilities and Sport Performances and the Predictive Model。金門體育學報，1(1)，16-25。https://doi.org/10.6855/JKS.201707_1(1).0002