目的 探讨短期生物反馈训练(BFT)对高原健康青年男性自主神经系统(ANS)的影响。方法 选取高原(海拔大于3000 m)长期驻训人员120名,随机分为对照组和试验组,每组60名,两组均按照训练大纲的训练科目、训练时间及有氧、无氧训练方法进行体能训练,保持相同的饮食、起居模式。试验组进行BFT 干预,对照组未进行BFT 干预。分别在训练前及训练开始后第1、2、3、4个周末测量研究对象的心率变异性(HRV)指标,评估试验前后研究对象的ANS功能。结果 随访期间,因数据采集不全,最终纳入研究的试验组56人,对照组42人。试验组经BFT干预后,HRV时域指标:正常窦性心搏间期标准差(SDNN)、全程相邻间期之差的均方根(RMSSD)、相邻间期差异≥50 ms百分比(PNN50)呈上升趋势,并在第3周显著超过试验前(P＜0.05),并维持至第4周(P＜0.05);对照组HRV时域指标在四个时间节点无统计学差异(P＞0.05)。HRV频域指标总功率(TP)、高频功率(HF)F呈上升趋势,第3、4周显著超过试验前(P＜0.05);低频功率(LF)/HF也呈上升趋势,并在第2、3、4周显著高于实验前(P＜0.05),而对照组上述指标保持相对稳定状态,差异无统计学意义(P＞0.05)。低频功率归一化(LFn)在试验组中整体趋于下降,在第3、4周,其值显著低于基线水平(P＜0.05,P＜0.01);对照组在4个时间节点均无统计学差异。结论 BFT能有效改善高原健康青年男性自主神经系统功能。
Abstract
Objective To investigate the effect of short-term biofeedback training (BFT) on the autonomic nervous system (ANS) of healthy young men stationed at plateau areas. Methods A total of 120 personnel who had been stationed at high altitudes (above 3000 meters) for a long time were selected and randomly divided into an experimental group and a control group, with 60 people in each group.,Both groups conducted physical training in accordance with the training subjects, training times and aerobic and anaerobic training methods stipulated in the training syllabus, maintaining the same dietary and living patterns, and the experimental group received BFT intervention, while the control group did not. The heart rate variability (HRV) indicators of the research subjects were measured before training and at the 1st, 2nd, 3rd, and 4th weekends after the start of training to evaluate the ANS function of the subjects. Results During the follow-up period, due to incomplete data collection, a total of 56 people in the experimental group and 42 people in the control group were finally included in the study. After BFT intervention, the time-domain HRV indicators SDNN, RMSSD, and PNN50 in the experimental group showed an upward trend and were significantly higher than those before the experiment at the 3rd week (P＜0.05), and this trend persisted until the 4th week (P＜0.05). There was no significant difference in the time-domain HRV indicators of the control group at the four time points (P>0.05). The frequency-domain HRV indicators of TP and HF showed an upward trend, and were significantly higher than those before the experiment at the 3rd and 4th weeks (P＜0.05). LF/HF also showed an upward trend and was significantly higher than that before the experiment at the 2nd, 3rd, and 4th weeks (P＜0.05), while the control group remained relatively stable, with no statistically significant difference (P>0.05). The low-frequency power normalization (LFn) in the experimental group tended to decrease overall, and its value was significantly lower than the baseline level at the 3rd and 4th weeks (P＜0.05). There was no significant difference in the control group at the four time points. Conclusions BFT can effectively improve the ANS function of healthy young men stationed at plateau areas.
关键词
生物反馈训练 /
高原 /
心率变异性 /
自主神经系统
Key words
biofeedback training /
plateau /
heart rate variability /
autonomic nervous system
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