航校空军学员飞行训练前后肠道菌群的对比研究

目的 探讨飞行训练对航校空军学员肠道菌群的影响.方法 通过微生态学方法对120名航校空军学员飞行前后肠道菌群中9种细菌进行定性定量分析,并与30名地勤人员进行对比研究,结合多种因素的填表调查分析各种因素对航校学员肠道菌群的影响.结果 双歧杆菌属航校学员训练后为(7.38±1.54)Log10×CFU/g,训练前为(8.92±1.86) Log10×CFU/g,地勤组为(9.51±2.44)Log10×CFU/g,航校空军学员训练后消化球菌属与训练前及地勤组相比,显著下降(P＜0.05),肠球菌属、拟杆菌属数量显著上升(肠球菌属P＜0.01;拟杆菌属P＜0.05);其他菌差异无统计学意义;精神紧张的学员与精神放松的学员相比,双歧杆菌属、肠球菌属、消化球菌属、拟杆菌属的数量差异有统计学意义(P＜0.05);腹部胀气显著的学员与胀气不明显的学员相比,双歧杆菌属、肠球菌属、消化球菌属数量差异有统计学意义(P＜0.05).结论 饮食是造成空军飞行学员员肠道菌群变化的原因之一,而精神状态、腹部胀气情况也是肠道菌群失调的重要原因.

Comparative study of intestinal flora in students from air force school before and after flight training

OBJECTIVE To explore the effect of air force flight training on the intestinal flora of the air force school students.METHODS Qualitative and quantitative analysis of 9 species of bacteria in the intestinal flora from 120 air force school students was performed with micro-ecological method before and after the flight training,totally 30 ground staff were selected for control study.A variety of factors for intestinal flora from air force school students were analyzed through filling out the questionnaire for various factors.RESULTS Bifidobacterium in air force school students before and after the flight training were(7.38±1.54)Log10×CFU/g and(8.92±1.86)Log10×CFU/g,respectively,the ground staff(9.51±2.44)Log10×CFU/g,Peptococcus in air force school students before and after the flight training significantly decreased as compared with that in the ground staff(P<0.05),Enterococci and Bacteroides increased significantly(Enterococci P<0.01;Bacteroide P<0.05);there were no statistical significance among other bacteria;as compared with the students with mental stress and the students with relaxation,the difference in the number of Bifidobacterium,Enterococci,Peptococcus and Bacteroide was statistically significant(P<0.05);as compared with the students with significant abdominal bloating and the student without abdominal bloating,the difference in the number of Bifidobacterium,Enterococci and Peptococcus was statistically significant(P<0.05).CONCLUSION Diet as well as the mental status and abdominal bloating is one of the causes of the imbalance of intestinal flora in air force school pilots.