Determinants and interindividual variation of R-R interval dynamics in healthy middle-aged subjects.
Determinants and interindividual variation of R-R interval dynamics in healthy middle-aged subjects.
复制标题
健康中年受试者 R-R 间期动态的决定因素和个体间变异。
DOI:
10.1152/ajpheart.2001.280.3.h1400
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
H. Huikuri
中科院分区:
文献类型:
--
作者:
Sirkku M. Pikkujämsä;Timo H. Mäkikallio;K. Airaksinen;H. Huikuri
Determinants and intersubject variations of fractal and complexity measures of R-R interval variability were studied in a random population of 200 healthy middle-aged women (age 51 +/- 6 yr) and 189 men (age 50 +/- 6 yr) during controlled conditions in the supine and sitting positions. The short-term fractal exponent (alpha(1)) was lower in women than men in both the supine (1.18 +/- 0.20 vs. 1.12 +/- 0.17, P < 0.01) and sitting position (P < 0.001). Approximate entropy (ApEn), a measure of complexity, was higher in women in the sitting position (1.16 +/- 0.17 vs. 1.07 +/- 0.19, P < 0.001), but no gender-related differences were observed in ApEn in the supine position. Fractal and complexity measures were not related to any other demographic, laboratory, or lifestyle factors. Intersubject variations in a fractal measure, alpha(1) (e.g., 1.15 +/- 0.20 in the supine position, z value 1.24, not significant), and in a complexity measure, ApEn (e.g., 1.14 +/- 0.18 in the supine position, z value 1.44, not significant), were generally smaller and more normally distributed than the variations in the traditional measures of heart rate variability (e.g., standard deviation of R-R intervals 49 +/- 21 ms in the supine position, z value 2.53, P < 0.001). These results in a large random population sample show that healthy subjects express relatively little interindividual variation in the fractal and complexity measures of heart rate behavior and, unlike the traditional measures of heart rate variability, they are not related to lifestyle, metabolic, or demographic variables. However, subtle gender-related differences are also present in fractal and complexity measures of heart rate behavior.
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影响因子:
24
作者:
Ylitalo,A;Airaksinen,KE;Hautanen,A;Kupari,M;Carson,M;Virolainen,J;Savolainen,M;Kauma,H;Kesäniemi,YA;White,PC;Huikuri,HV
通讯作者:
Huikuri,HV
影响因子:
37.8
作者:
K. C. Ho;G. Moody;Chung-Kang Peng;J. Mietus;M. Larson;D. Levy;A. Goldberger
通讯作者:
K. C. Ho;G. Moody;Chung-Kang Peng;J. Mietus;M. Larson;D. Levy;A. Goldberger
DOI:
10.1016/0735-1097(94)90177-5
发表时间:
1994-12-01
影响因子:
24
作者:
RYAN, SM;GOLDBERGER, AL;LIPSITZ, LA
通讯作者:
LIPSITZ, LA
影响因子:
20.1
作者:
J. E. Skinner;C. Carpeggiani;C. E. Landisman;K. Fulton
通讯作者:
J. E. Skinner;C. Carpeggiani;C. E. Landisman;K. Fulton
DOI:
10.1152/ajpregu.1996.271.4.r1078
发表时间:
1996-10-01
影响因子:
2.8
作者:
Iyengar, N;Peng, CK;Lipsitz, LA
通讯作者:
Lipsitz, LA