【摘要】 目的:探究女子运动员力竭运动后脑电信号(EEG)与心率变异性(HRV)的变化,阐明其与运动性疲劳之间的关系。方法:随机选取19名女大学生运动员为实验对象,用布鲁斯(Bruce)运动方案进行力竭运动,检测其运动前后的EEG和HRV相关指标变化情况。结果:与运动前相比,疲劳后HRV时域指标SDNN、RMSSD、pNN50及频域指标LF和HF均非常显著性下降(P<0.01),但LF/HF比值却出现非常显著性上升(P<0.01);脑电信号方面,运动后疲劳状态下的α波和β波出现下降,δ波和θ波则出现上升趋势,且α波与运动前比在PZ区显著性下降(P<0.05),在FPZ区非常显著性下降(P<0.01),θ波与运动前比在FZ、FPZ区显著性上升(P<0.05),δ波在运动后有上升趋势但无显著差异。结论:力竭运动造成女子运动员心脏自主节律失衡,大脑皮层抑制,因此EEG与HRV变化可作为判别女子运动员力竭疲劳的有效指标。更多还原

【Abstract】 Objective: in order to explore the women athletes’ changes in brain electrical signals(EEG)and heart rate variability(HRV)after exhaustion exercise, clarify their relationship with exercise fatigue. Methods: 19 female college athletes were randomly selected as subjects to exercise exhausted on the running platform(Bruce),and the EEG signals and HRV related indexes were detected before and after the exercise. Results: the time domain indexes SDNN, RMSSD, pNN50 and frequency domain indexes LF and HF of HRV decreased significantly(p<0.01), but the LF/HF ratio increased significantly(p<0.01); after exercise, the α wave and β wave decreased, while the δ wave and θ wave increased; Compared with that before exercise, α wave decreased significantly in PZ(p<0.05) and FPZ(p<0.01),Compared with before the movement, θ wave increased significantly in FZ and FPZ(p<0.05), while after the movement, δ wave had an upward trend but no statistical significance. Conclusion: the exhausting exercise results in the imbalance of autonomic nerve and the inhibition of cerebral cortex, which can be used as an effective index to judge exhausting fatigue of female athletes.更多还原