太极拳呼吸方式对心率变异性的影响

Purpose: Respiratory is an important factor for heart rate variability. This paper will explore the breathing manner of tai chi practition on heartrevariability by detecting the gas metabolism and heart rate variability index of high and low levels of Tai Chi practitioners. Methods: using Polar RS800 and Cortex metabolic gas analyzer to record the variation of heart rate variability and metabolic indicators of gas of subjects to practice Taijiquan, selecting the mean value of 5 minutes quiet、the whole process of movement and 10 minutes after movement for statistical calculations. Results and Conclusion: ① long time tai chi practicing reduces breathing frequency and increases tidal volume.②long tai chi practicing plays a significant role on the ability to regulate practitioners＇HF,to enable practitioners to enhance the balance of plant. ③The influences of respiratory rate and tidal volume on heart rate variability are consistent, that is, LF, HF, and the average RR have emerged as the respiratory frequency and tidal volume increase and decrease with reduced respiratory rate and tidal volume increases, LF / HF changes in contrast.