丙酮酸钙对于摔跤运动员减重过程中运动能力的影响

Effect of Calcium Pyruvate Supplementation on Exercise Ability in Wrestlers during Body Weight Control

目的:探讨补充8周丙酮酸钙对于摔跤运动员减重过程中运动能力的影响。方法:选取男性摔跤运动员22例,随机分成丙酮酸钙组(实验组)和安慰剂组(对照组)各11例,分别给予6g/d的丙酮酸钙和安慰剂口服,共8周,同时均保持相同的生活和正常训练模式。实验前后测试运动能力指标主要为有氧耐力(个体乳酸阈方法)和肌肉力量(卧推、硬拉)2项指标。结果:2组实验前后乳酸阈值差异无显著性意义;实验组乳酸阈强度与实验前比较似乎有向后推移的趋势,但这种变化较小,无显著性意义,2组间比较差异也不明显。肌肉力量测试卧推和硬拉指标2组均无明显变化趋势。结论:服用8周剂量为6g/d的丙酮酸钙后,摔跤运动员达到减重目的同时,不会降低运动能力。

Objective： To investigate the effects of oral supplement of calcium pyruvate on exercise ability in wrestlers during body weight control for 8 weeks. Methods： Twenty-two male wrestlers were randomly divided into two groups and received calcium pyruvate and placebo （polyglucose） 6 g per day （twice a day） respectively for 8 weeks. The wrestlers in both groups kept the same life style and training style. Exercise endurance and muscle strength were measured before and after the experiment. Individual lactate threshold was measured to reflect exercise endurance. Muscle strength was measured to mirror item exercise ability. Results： There was no significant difference in individual lactate threshold and muscle strength between the two groups at the end of the experiment. A slight increase of lactate threshold intensity was noticed in the calcium pyruvate group. But the change had no statistically significant difference. There was no significant difference in the change of individual lactate threshold and muscle strength between calcium pyruvate group and placebo group. Conclusion： There is no decline in exercise ability during body weight control after supplement of calcium pyruvate for 8 weeks.