Acknowledgement
This study was supported by grants from the Korea Institute of Oriental Medicine (Grant No. KSN1732121).
References
- Besedovsky L, Lange T, Born J. Sleep and immune function. Pflugers Arch 2012;463(1):121-37. https://doi.org/10.1007/s00424-011-1044-0
- Harding EC, Franks NP, Wisden W. Sleep and thermoregulation. Curr Opin Physiol 2020;15:7-13. https://doi.org/10.1016/j.cophys.2019.11.008
- Shokri-Kojori E, Wang GJ, Wiers CE, Demiral SB, Guo M, Kim SW, et al. β-Amyloid accumulation in the human brain after one night of sleep deprivation. Proc Natl Acad Sci USA 2018;115(17):4483-8. https://doi.org/10.1073/pnas.1721694115
- Singareddy R, Vgontzas AN, Fernandez-Mendoza J, Liao D, Calhoun S, Shaffer ML, et al. Risk factors for incident chronic insomnia: a general population prospective study. Sleep Med 2012;13(4):346-53. https://doi.org/10.1016/j.sleep.2011.10.033
- Uhlig BL, Sand T, Odegard SS, Hagen K. Prevalence and associated factors of DSM-V insomnia in Norway: the Nord-Trondelag Health Study (HUNT 3). Sleep Med 2014;15(6):708-13. https://doi.org/10.1016/j.sleep.2014.01.018
- Kim KW, Kang SH, Yoon IY, Lee SD, Ju GW, Han JW, et al. Prevalence and clinical characteristics of insomnia and its subtypes in the Korean elderly. Arch Gerontol Geriatr 2017;68:68-75. https://doi.org/10.1016/j.archger.2016.09.005
- Institute for Health Insurance Policy, Ilsan-hospital NHIS. Sleep disorder, tired after sleeping, annual average increase of 8.1% for 5 years in Wonju-si, Gangwon-do, Republic of Korea, National Health Insurance Service, 2019. https://www.nhis.or.kr/nhis/together/wbhaea01600m01.do?mode=view&articleNo=131445 Accessed 21 May 2024.
- Wolkove N, Elkholy O, Baltzan M, Palayew M. Sleep and aging: 1. Sleep disorders commonly found in older people. CMAJ 2007;176(9):1299-304. https://doi.org/10.1503/cmaj.060792
- Tsuboi S, Mine T, Tomioka Y, Shiraishi S, Fukushima F, Ikaga T. Are cold extremities an issue in women's health? Epidemiological evaluation of cold extremities among Japanese women. Int J Womens Health 2019;11:31-9. https://doi.org/10.2147/IJWH.S190414
- Tokunaga H, Munakata K, Katayama K, Yamaguchi R, Imoto S, Miyano S, et al. Clinical data mining related to the Japanese kampo concept "hie" (oversensitivity to coldness) in men and pre- and postmenopausal women. Evid Based Complement Alternat Med 2014;2014:832824.
- Phillips B, Mannino D. Correlates of sleep complaints in adults: the ARIC study. J Clin Sleep Med 2005;1(3):277-83. https://doi.org/10.5664/jcsm.26344
- Krauchi K, Gasio PF, Vollenweider S, Von Arb M, Dubler B, Orgul S, et al. Cold extremities and difficulties initiating sleep: evidence of co-morbidity from a random sample of a Swiss urban population. J Sleep Res 2008;17(4):420-6. https://doi.org/10.1111/j.1365-2869.2008.00678.x
- Hur YM, Chae JH, Chung KW, Kim JJ, Jeong HU, Kim JW, et al. Feeling of cold hands and feet is a highly heritable phenotype. Twin Res Hum Genet 2012;15(2):166-9. https://doi.org/10.1375/twin.15.2.166
- Bae KH, Lee Y, Go HY, Kim SJ, Lee SW. The relationship between cold hypersensitivity in the hands and feet and health-related quality of life in Koreans: a nationwide population survey. Evid Based Complement Alternat Med 2019;2019:6217036.
- Yamazaki F. The cutaneous vasoconstrictor response in lower extremities during whole-body and local skin cooling in young women with a cold constitution. J Physiol Sci 2015;65(5):397-405. https://doi.org/10.1007/s12576-015-0378-3
- Konieczka K, Ritch R, Traverso CE, Kim DM, Kook MS, Gallino A, et al. Flammer syndrome. EPMA J 2014;5(1):11.
- Na ID, Park MS, Kim YM. The study on Korean medical pattern differentiation of sleep-wake disorders by DSM-V classification. J Physiol & Pathol Korean Med 2017;31(2):83-93. https://doi.org/10.15188/kjopp.2017.04.31.2.83
- Pache M, Krauchi K, Cajochen C, Wirz-Justice A, Dubler B, Flammer J, et al. Cold feet and prolonged sleep-onset latency in vasospastic syndrome. Lancet 2001;358(9276):125-6. https://doi.org/10.1016/S0140-6736(01)05344-2
- Kim YJ, Han BG, KoGES group. Cohort profile: The Korean Genome and Epidemiology Study (KoGES) Consortium. Int J Epidemiol 2017;46(2):e20.
- Jin HJ, Baek YW, Kim HS, Ryu JH, Lee SW. Constitutional multicenter bank linked to Sasang constitutional phenotypic data. BMC Complement Altern Med 2015;15:46.
- Buysse DJ, Reynolds CF 3rd, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res 1989;28(2):193-213. https://doi.org/10.1016/0165-1781(89)90047-4
- Sohn SI, Kim DH, Lee MY, Cho YW. The reliability and validity of the Korean version of the Pittsburgh Sleep Quality Index. Sleep Breath 2012;16(3):803-12. https://doi.org/10.1007/s11325-011-0579-9
- Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo JL Jr, et al. Seventh report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. Hypertension 2003;42(6):1206-52. https://doi.org/10.1161/01.HYP.0000107251.49515.c2
- Bae KH, Go HY, Park KH, Ahn IK, Yoon YH, Lee SW. The association between cold hypersensitivity in the hands and feet and chronic disease: results of a multicentre study. BMC Complement Altern Med 2018;18(1):40.
- Bae KH, Kim SH, Go HY, Park KH, Lee SW, Lee SJ. One year test-retest reliability of the Korea Sasang constitutional diagnostic questionnaire (KS-15) in university students. J Sasang Constitut Med 2019;31(2):12-21.
- Bae KH, Park KH, Lee SW. Cold hypersensitivity in the Hands, Feet and Abdomen according to Sasang Constitution. J Sasang Constitut Med 2018;30(1):50-7.
- Krauchi K, Cajochen C, Werth E, Wirz-Justice A. Warm feet promote the rapid onset of sleep. Nature 1999;401(6748):36-7. https://doi.org/10.1038/43366
- Vollenweider S, Wirz-Justice A, Flammer J, Orgul S, Krauchi K. Chronobiological characterization of women with primary vasospastic syndrome: body heat loss capacity in relation to sleep initiation and phase of entrainment. Am J Physiol Regul Integr Comp Physiol 2008;294(2):R630-8. https://doi.org/10.1152/ajpregu.00609.2007
- Krauchi K. The thermophysiological cascade leading to sleep initiation in relation to phase of entrainment. Sleep Med Rev 2007;11(6):439-51. https://doi.org/10.1016/j.smrv.2007.07.001
- Flammer J, Konieczka K, Flammer AJ. The primary vascular dysregulation syndrome: implications for eye diseases. EPMA J 2013;4(1):14.
- Yoshino T, Katayama K, Munakata K, Horiba Y, Yamaguchi R, Imoto S, Miyano S, et al. Statistical analysis of hie (cold sensation) and hiesho (cold disorder) in kampo clinic. Evid Based Complement Alternat Med 2013;2013:398458.
- Bae KH, Lee JA, Park KH, Yoo JH, Lee YS, Lee SW. Cold hypersensitivity in the hands and feet may be associated with functional dyspepsia: results of a multicenter survey study. Evid Based Complement Alternat Med 2016;2016:8948690.
- Bae KH, Park KH, Ahn IK, Lim SE, Lee S. Cold Feet and Sleep Quality : An Exploratory Study Using Polysomnography and Pittsburgh Sleep Quality Index. Journal of Society of Preventive Korean Medicine 2024;28(1):109-18.
- Resta O, Foschino-Barbaro MP, Legari G, Talamo S, Bonfitto P, Palumbo A, et al. Sleep-related breathing disorders, loud snoring and excessive daytime sleepiness in obese subjects. Int J Obes Relat Metab Disord 2001;25(5):669-75. https://doi.org/10.1038/sj.ijo.0801603
- Yang JL, Zhang R, Du L, Yang YS, Liu XC. Clinical observation on the neurotransmitters regulation in patients of insomnia differentiated as yang deficiency pattern treated with warm acupuncture and auricular point sticking therapy. Zhongguo Zhen Jiu 2014;34(12):1165-8.
- Yang M, Lee HS, Hwang MW, Jin M. Effects of Korean red ginseng (Panax Ginseng Meyer) on bisphenol A exposure and gynecologic complaints: single blind, randomized clinical trial of efficacy and safety. BMC Complement Altern Med 2014;14:265.
- Na ID, Park MS, Kim YM. The study on Korean medical pattern differentiation of sleep-wake disorders by DSM-V classification. J Physiol & Pathol Korean Med 2017;31(2):83-93. https://doi.org/10.15188/kjopp.2017.04.31.2.83
- Mun SJ, Park KH, Bae KH, Baek YH, Lee SW. Association of cold/heat sensation with sleep quality and insomnia in middle-aged women. J Korean Med 2024;45(1):125-36. https://doi.org/10.13048/jkm.24008
- Huh TY, Ha DJ, Kim KM. The Effect of Sayeok-san for Insomnia: A Systematic Review and Meta-Analysis. J Int Korean Med 2021;42(4):547-62. https://doi.org/10.22246/jikm.2021.42.4.547
- Park JK. A Case Report of Primary Insomnia treated by Oryeong-san decoction. J of KMediACS 2015;7(1):45-52.
- Huh TY, Ha DJ, Kim KM. The Effect of Sayeok-san for Insomnia: A Systematic Review and Meta-Analysis. J Int Korean Med 2021;42(4):547-62. https://doi.org/10.22246/jikm.2021.42.4.547