References
- Aronson D, Mittleman MA, Burger AJ. (2001). Interleukin-6 levels are inversely correlated with heart rate variability in patients with decompensated heart failure. J Cardiovasc Electrophysiol. 12:294–300
- Bernardi L, Valle F, Coco M, et al. (1996). Physical activity influences heart rate variability and very-low-frequency components in Holter electrocardiograms. Cardiovasc Res. 32:234–7
- Bigger Jr JT, Fleiss JL, Rolnitzky LM, Steinman RC. (1992). Time course of recovery of heart period variability in patients with myocardial infarction and ventricular arrhythmias. Am J Cardiol. 69:718–23
- Bonting S. (1999). Advances in Space Biology and Medicine. 7:103–15
- Busek P, Vanková J, Opavský J, et al. (2005). Spectral analysis of the heart rate variability in sleep. Physiol Res. 54:369–76
- Di Rienzo M, Castiglioni P, Iellamo F, et al. (2008). Dynamic adaptation of cardiac baroreflex sensitivity to prolonged exposure to microgravity: Data from a 16-day spaceflight. J Appl Physiol. 105:1569–75
- Dunlap JC. (1999). Molecular bases for circadian clocks. Cell. 96:271–90
- Eckberg D, Kuusella T. (2005). Human vagal baroreflex sensitivity fluctuates widely and rhythmically at very low frequencies. J Physiol. 567:1011–19
- Eckberg DL, Halliwill JR, Beightol LA, et al. (2010). Human vagal baroreflex mechanisms in space. J Physiol. 588:1129–38
- Froy O. (2011). Circadian rhythms, aging, and life span in mammals. Physiology. 26:225–35
- Fu L, Pelicano H, Liu J, et al. (2002). The circadian gene Period 2 plays an important role in tumor suppression and DNA damage response in vivo. Cell. 111:41–50
- Gazenko OG, Shulzhenko EB, Egorov AD. (1986). Cardiovascular changes in prolonged space flights. Acta Physiol Pol. 37:53–68
- Gundel A, Polyakov VV, Zulley J. (1997). The alteration of human sleep and circadian rhythms during spaceflight. J Sleep Res. 6:1–8
- Halberg F, Cornélissen G, Wilson D, et al. (2009). Chronobiology and chronomics: Detecting and applying the cycles of nature. Biologist (London). 56:209–14
- Hayano J, Sakakibara Y, Yamada M, et al. (1990). Diurnal variations in vagal and sympathetic cardiac control. Am J Physiol. 258:H642–6
- Hayano J, Yasuma F, Okada A, et al. (1996). Respiratory sinus arrhythmia. Phenomenon improving pulmonary gas exchange and circulatory efficiency. Circulation. 94:842–7
- Hirayanagi K, Iwase S, Kamiya A, et al. (2004). Functional changes in autonomic nervous system and baroreceptor reflex induced by 14 days of 6 degrees head-down bed rest. Eur J Appl Physiol. 92:160–7
- Hurd MW, Ralph MR. (1998). The significance of circadian organization for longevity in the golden hamster. J Biological Rhythm. 13:430–6
- Irwin MR, Valladares EM, Motivala S, et al. (2006). Association between nocturnal vagal tone and sleep depth, sleep quality, and fatigue in alcohol dependence. Psychosom Med. 68:159–66
- Lampert R, Bremner JD, Su S, et al. (2008). Decreased heart rate variability is associated with higher levels of inflammation in middle-aged men. Am Heart J. 156:e1–7
- Leach CS, Cintron NM, Krauchs JM. (1991). Metabolic changes observed in astronauts. J Clin Pharmacol. 31:921–7
- Monk TH, Buysee DJ, Billy BD, et al. (1998). Sleep and circadian rhythm in four orbiting astronauts. J Biol Rhythms. 13:188–201
- Monk TH, Kennedy KS, Rose LR, Linenger JM. (2001). Decreased human circadian pacemaker influence after 100 days in space: A case study. Psychosom Med. 63:881–5
- Otsuka K, Ichimaru Y, Cornélissen G, et al. (2000). Dynamic analysis of heart rate variability from 7-day Holter recordings associated with geomagnetic activity in subarctic area. Computer Cardiol. 27:453–6
- Otsuka K, Nishimura Y, Kubo Y, et al. (1997). Chronomes (rhythms, chaos and age trends) of human heart rare variability in both genders. Computers in Cardiology. 24:49–52
- Pavy-Le Traon A, Heer M, Narici MV, et al. (2007). From space to Earth: Advances in human physiology from 20 years of bed rest studies (1986–2006). Eur J Appl Physiol. 101:143–94
- Penttilä J, Helminen A, Jartti T, et al. (2001). Time domain, geometrical and frequency domain analysis of cardiac vagal outflow: Effects of various respiratory patterns. Clin Physiol. 21:365–76
- Sawada Y, Ohtomo N, Tanaka Y, et al. (1997). New technique for time series analysis combining the maximum entropy method and non-linear least squares method: Its value in heart rate variability analysis. Med Biol Eng Compt. 33:2821–31
- Schmitt HH, Reid DJ. (1985). Anecdotal information on space adaptation syndrome. NASA/Space Biomedical Research Institute and University Space Research Association Division of Space Biomedicine, Housten: 1–21
- Takusagawa M, Komori S, Umetani K, et al. (1999). Alternations of autonomic nerve activity in recurrence of variant angina. Heart. 82:75–81
- Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. (1996). Heart rate variability: Standards of measurement, physiological interpretation, and clinical use. Circulation. 93:1043–65
- Turek FW, Joshu C, Kohsaka A, et al. (2005). Obesity and metabolic syndrome in circadian Clock mutant mice. Science. 308:1043–5
- Ueda HR, Hayashi S, Chen W, et al. (2005). System-level identification of transcriptional circuits underlying mammalian circadian clocks. Nature Genet. 37:187–92
- Verheyden B, Liu J, Beckers F, Aubert AE. (2010). Operational point of neural cardiovascular regulation in humans up to 6 months in space. J Appl Physiol. 108:646–54