Increased first and second pulse harmonics in Tai Chi Chuan practitioners

BMC Complementary and Alternative Medicine

Research Article

Yung-Sheng Chen¹  Cheng-Deng Kuo²  Wan-An Lu³ 

[1] Department of Exercise and Health Sciences, University of Taipei, 111, Taipei, Taiwan;Laboratory of Biophysics, Department of Medical Research, Taipei Veterans General Hospital, 112, Taipei, Taiwan;Division of Respiratory Care, Department of Chest Medicine, Taipei Veterans General Hospital, 112, Taipei, Taiwan;Laboratory of Biophysics, Department of Medical Research, Taipei Veterans General Hospital, 112, Taipei, Taiwan;Institute of Cultural Asset and Reinvention, Fo-Guang University, 262, Yilan, Taiwan;

关键词: Heart Rate Variability;    Heart Failure With Preserve Ejection Fraction;    Power Spectral Analysis;    Heart Rate Variability Measure;    Sympathetic Modulation;   

DOI  :  10.1186/s12906-016-1058-4

 received in 2015-08-12, accepted in 2016-02-16,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundTai Chi Chuan (TCC) is known to be a good calisthenics for people. This study examined the relationship between pulse harmonics and autonomic nervous modulation in TCC practitioners.MethodsPower spectral measures of right pulse wave and heart rate variability (HRV) measures were compared between TCC practitioners and control subjects. Correlation analyses between pulse harmonics and HRV measures were performed using linear regression analysis.ResultsAt baseline, the total power of pulse (TPp), powers of all individual pulse harmonics, normalized power of the 1st harmonics (nPh1) of TCC practitioners were greater, while the normalized power of the 4th pulse harmonics (nPh4) of TCC practitioners was smaller, than those of the controls. Similarly, the baseline standard deviation (SDRR), coefficient of variation (CVRR), and normalized high-frequency power (nHFP) of RR intervals were smaller, while the normalized very low-frequency power (nVLFP) and low-/high- frequency power ratio (LHR) were larger in the TCC practitioners. The TCC age correlated significantly and negatively with nPh1, and nearly significantly and negatively with nPh2 in the TCC practitioners. Thirty min after TCC exercise, the percentage changes in mRRI, SDRR, TP, VLFP were decreased, while the percentage changes in HR, ULFP, nLFP, and Ph2 were increased, relative to the controls. Correlation analysis shows that the %Ph2 correlates significantly and negatively with %mRRI and significantly and positively with %HR.ConclusionThe TCC practitioners had increased baseline total power of pulse and the 1st and 2nd pulse harmonics, and decreased power of the 4th pulse harmonics, along with decreased vagal modulation and increased sympathetic modulation. After TCC exercise, the power of the 2nd harmonics of TCC practitioners was increased which might be related to the increase in HR due to decreased vascular resistance after TCC exercise.

【 授权许可】

CC BY   
© Lu et al. 2016