Andrade Carolina Pieroni, Zamunér Antonio Roberto, Forti Meire, de França Thalita Fonseca, da Silva Ester
Department of Physical Therapy, Federal University of São Carlos, Rodovia Washington Luís, Km 235-Jardim Guanabara, São Carlos, São Paulo, Brazil.
Clin Rheumatol. 2016 Sep;35(9):2347-52. doi: 10.1007/s10067-016-3284-z. Epub 2016 Apr 20.
The aim of this study is to define absolute and relative reliability of spectral indices of cardiovascular autonomic control in the supine position in women with fibromyalgia syndrome (FMS). Twenty-three women with FMS (age 48 ± 7 years) took part in the study. ECG, finger blood pressure, and respiration were continuously recorded in all participants at rest in baseline 1 (BL1) and after 15 days from BL1 (BL2). The power spectrum analysis provided two oscillatory components: low frequency (LF, 0.04-0.15 Hz) and high frequency (HF, 0.15-0.4 Hz) from the heart period (HP) variability and the LF oscillatory component from SAP variability (LFSAP). Absolute and relative reliability were rated by 95 % of the limit of random variation and intraclass correlation coefficient (ICC), respectively. No significant differences were observed between BL1 and BL2 for the spectral indices of HP and SAP variabilities. The 95 % limit of the random variation of these indices indicated that the values of repeated measurements were between 22 % higher and 0.2 % lower (more reliable parameter; average of HP variability) and 912.9 % higher and 0.2 % lower (less reliable parameter; LFSAP) than BL1. Conversely, the index of relative reliability (ICC) ranged from 0.23 to 0.70 indicating a good reliability. The spectral indices of cardiovascular autonomic control in women with FMS seem to present good relative reliability. Therefore, these indices can be useful as parameters to quantify if a variation was consistent and accurate in the retest besides adding crucial information for clinical research and clinical evaluation of FMS patients.
本研究旨在确定纤维肌痛综合征（FMS）女性仰卧位时心血管自主神经控制频谱指数的绝对可靠性和相对可靠性。23名FMS女性（年龄48±7岁）参与了本研究。在基线1（BL1）静息状态下以及BL1后15天（BL2），对所有参与者连续记录心电图、手指血压和呼吸情况。功率谱分析提供了两个振荡成分：来自心动周期（HP）变异性的低频（LF，0.04 - 0.15Hz）和高频（HF，0.15 - 0.4Hz），以及来自收缩压变异性的LF振荡成分（LFSAP）。绝对可靠性和相对可靠性分别通过随机变异极限的95%和组内相关系数（ICC）进行评定。HP和SAP变异性的频谱指数在BL1和BL2之间未观察到显著差异。这些指数的随机变异95%极限表明，重复测量值比BL1高22%至低0.2%（更可靠参数；HP变异性平均值）以及高912.9%至低0.2%（较不可靠参数；LFSAP）。相反，相对可靠性指数（ICC）范围为0.23至0.70，表明可靠性良好。FMS女性心血管自主神经控制的频谱指数似乎具有良好的相对可靠性。因此，这些指数除了为FMS患者的临床研究和临床评估提供关键信息外，还可作为参数用于量化复测中的变化是否一致且准确。
