生理节律与日常活动对人体疲劳程度的影响

目的:研究生理节律和日常活动分别对人体疲劳程度的影响大小。方法:选取某校7名大学生志愿者,在军训期间对每日军训科目严格限制条件下进行该实验,以闪光临界融合频率、心率变异性、反应时、静态姿势图TLX-NASA量表评分作为指标,对每天分别在训练前和训练后疲劳程度的大小进行测量,以这些指标描述训练前后的疲劳程度。结果:反应时降低(0.60±0.09)、反应正确率提高(0.97±0.03);闪光临界光融合频率升高(40.84±2.14);心率变异性TP(3076.60±382.08)降低、心率变异性SDNN(55.28±16.85)降低;静态姿势图晃动减少,中低频率段(0.15±0.01)、前后方向重心变位(7.92±0.63),TLX-NASA量表评分降低(30.47±10.23)。以上差异均具有统计学意义(P<0.05)。结论:生理节律相对于日常活动对机体的疲劳状态有更大的影响。

The Effect of Circadian Rhythm and Daily Activity to Fatigue

Objective: To compare the effect of circadian rhythm and daily life to the status of fatigue.Methods: 7 volunteers from the campus were included in this study.In the period of military training,all the quantity of training classes were restricted strictly every-day.We use the following parameter as testing indexes: critical fuse frequency(CFF),heart rate variability(HRV),reaction time(RT),posturography and TLX-NASA assessment.In the analysis,we compared the indexes pre-training and post-training which measured the status of fatigue.Results: Compared with the results pre-training,CFF(40.84±2.14) increasing,in the HRV indexes,TP(3076.60±382.08) decreasing,SDNN(55.28±16.85) decreasing,RT(0.60±0.09)decreasing,correct ratio of RT(0.97±0.03)increasing,the sway of posturography decreasing,middle-lower frequency(0.15±0.01)decreasing,sway of anterior-rear direction(7.92±0.63)decreasing,and TLX-NASA assessment(30.47±10.23) decreased.These comparisons had significant difference.Conclusion: Circadian rhythm has more effect than daily life to the status of fatigue.