Dong Weizhong, Wang Ying, Liao Shuaixiong, Tang Wei, Peng Li, Song Gang
Research Centre for Exercise Detoxification, College of Physical Education, Southwest University, Chongqing, China.
Key Lab of Physical Fitness Evaluation and Motor Function Monitoring, College of Physical Education, Southwest University, Chongqing, China.
Front Psychol. 2021 Jan 13;11:570298. doi: 10.3389/fpsyg.2020.570298. eCollection 2020.
Athletes will increase their state anxiety under stress situations, which will lead to the decline of sports performance. The improvement of anxiety by probiotics has been reported, but there is a lack of research in the athlete population. The purpose of the current study is to explore the effectiveness of probiotics in improving athletes' state anxiety and sports performance under stress situations.
We conducted this single-arm study in Chongqing Institute of Sports Technology. In the 8-week study, 21 Chongqing young divers (mean age: 9.10 ± 1.80) were given probiotic subsp. (1 × 10 colony-forming units/100 g) daily. The state anxiety and sports performance of athletes were measured before, during, and after the intervention, and the gut microbiota of athletes was measured before and after the intervention.
The intervention results showed that cognitive state anxiety, somatic state anxiety, and anxiety emotion were improved (cognitive: = -3.964, < 0.001; somatic: = -3.079, = 0.003; anxiety: = -2.973, < 0.001). In terms of gut microbiota, the intervention did not change the gut microbial composition (such as α diversity and β diversity) but increased the abundance of . At the 8th week, the performance of athletes under stress was significantly improved (χ = 7.88, = 0.019).
First of all, due to the restriction of the number of subjects in this study, there was no control group. Secondly, although the athletes' diet was recorded in this study, the influence of this factor on gut microbiota was not eliminated. Finally, the anxiety level of the athletes in this study was obtained through a self-report, lacking physiological data in state anxiety.
The results show that probiotics intervention can improve the state anxiety of athletes under stress situation and improve the performance of athletes under stress situation.
运动员在压力情境下会增加状态焦虑，这会导致运动成绩下降。已有报道称益生菌可改善焦虑，但针对运动员群体的研究较少。本研究旨在探讨益生菌在改善运动员压力情境下的状态焦虑和运动成绩方面的有效性。
我们在重庆市运动技术学院进行了这项单臂研究。在为期8周的研究中，21名重庆年轻跳水运动员（平均年龄：9.10±1.80岁）每天服用益生菌亚种（1×10菌落形成单位/100克）。在干预前、干预期间和干预后测量运动员的状态焦虑和运动成绩，并在干预前后测量运动员的肠道微生物群。
干预结果显示，认知状态焦虑、躯体状态焦虑和焦虑情绪均得到改善（认知：=-3.964，<0.001；躯体：=-3.079，=0.003；焦虑：=-2.973，<0.001）。在肠道微生物群方面，干预并未改变肠道微生物组成（如α多样性和β多样性），但增加了的丰度。在第8周，运动员在压力下的表现显著改善（χ=7.88，=0.019）。
首先，由于本研究受试者数量的限制，没有对照组。其次，尽管本研究记录了运动员的饮食，但未消除该因素对肠道微生物群的影响。最后，本研究中运动员的焦虑水平是通过自我报告获得的，缺乏状态焦虑的生理数据。
结果表明，益生菌干预可改善运动员在压力情境下的状态焦虑，并提高运动员在压力情境下的表现。
