S Carrasco1, R González, M J Gaitán, O Yáñez. 1. Laboratorio de Fisiología Humana, Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana - Iztapalapa Av. San Rafael Atlixco #186, Colonia Vicentina, Iztapalapa 09340, D.F México. scas@xanum.uam.mx
Abstract
PRIMARY OBJECTIVE: Due to limited and contradictory information available, the reproducibility of temporal and spectral measurements of heart rate variability from short-term recordings was evaluated in normal subjects during supine, controlled breathing, standing, exercise and recovery conditions. METHODS AND PROCEDURES: Five-minute tachograms from 11 individuals were obtained during the specified manoeuvres, and repeated three times in a five day period. Besides temporal and spectral indexes, the central frequencies were also computed. MAIN OUTCOMES AND RESULTS: The ANOVA presented non-significant differences among the repetitions for any of the parameters studied. Most intra-class correlation coefficients were over 0.68. The central frequency of the low component diminished during the manoeuvres. CONCLUSIONS: In healthy individuals, the temporal and spectral measurements of the heart rate variability from short-term records are stable in a five day period for the manoeuvres studied. Central frequencies of the spectral components might be used as indexes of the autonomic activity.
PRIMARY OBJECTIVE: Due to limited and contradictory information available, the reproducibility of temporal and spectral measurements of heart rate variability from short-term recordings was evaluated in normal subjects during supine, controlled breathing, standing, exercise and recovery conditions. METHODS AND PROCEDURES: Five-minute tachograms from 11 individuals were obtained during the specified manoeuvres, and repeated three times in a five day period. Besides temporal and spectral indexes, the central frequencies were also computed. MAIN OUTCOMES AND RESULTS: The ANOVA presented non-significant differences among the repetitions for any of the parameters studied. Most intra-class correlation coefficients were over 0.68. The central frequency of the low component diminished during the manoeuvres. CONCLUSIONS: In healthy individuals, the temporal and spectral measurements of the heart rate variability from short-term records are stable in a five day period for the manoeuvres studied. Central frequencies of the spectral components might be used as indexes of the autonomic activity.
Authors: Erol Tulumen; Indira Khalilayeva; Kudret Aytemir; F E S C Ergun Baris Kaya; Onur Sinan Deveci; Hakan Aksoy; Ugur Kocabas; Sercan Okutucu; Lale Tokgozoglu; Giray Kabakci; Hilmi Ozkutlu; Ali Oto Journal: Ann Noninvasive Electrocardiol Date: 2011-10 Impact factor: 1.468
Authors: Otto F Barak; Djordje G Jakovljevic; Jelena Z Popadic Gacesa; Zoran B Ovcin; David A Brodie; Nikola G Grujic Journal: J Sports Sci Med Date: 2010-06-01 Impact factor: 2.988