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Cold Feet and Sleep Quality : An Exploratory Study Using Polysomnography and Pittsburgh Sleep Quality Index

족냉과 수면의 질 : 수면다원검사와 피츠버그 수면의 질 지수를 이용한 탐색적 연구

  • Kwang-Ho Bae (KM Data Division, Korea Institute of Oriental Medicine) ;
  • Ki-Hyun Park (KM Data Division, Korea Institute of Oriental Medicine) ;
  • Il-Koo Ahn (KM Data Division, Korea Institute of Oriental Medicine) ;
  • Su-Eun Lim (KM Data Division, Korea Institute of Oriental Medicine) ;
  • Siwoo Lee (KM Data Division, Korea Institute of Oriental Medicine)
  • 배광호 (한국한의학연구원 한의약데이터부 ) ;
  • 박기현 (한국한의학연구원 한의약데이터부 ) ;
  • 안일구 (한국한의학연구원 한의약데이터부 ) ;
  • 임수은 (한국한의학연구원 한의약데이터부 ) ;
  • 이시우 (한국한의학연구원 한의약데이터부 )
  • Received : 2024.03.16
  • Accepted : 2024.04.08
  • Published : 2024.04.30

Abstract

Objectives : This study aimed to investigate the relationship between cold feet and sleep quality using polysomnography (PSG) and Pittsburgh Sleep Quality Index (PSQI). Methods : We divided 11 adults (6 females, 5 males) with Insomnia Severity Index score below 21 into cold feet (CF) and a non-cold feet (NCF) group based on the median feet temperature (Taichong, LR3). PSG and PSQI were administered to assess sleep characteristics and subjective sleep quality. Results : CF group exhibited significantly lower time in bed, sleep period time, and total sleep time compared to NCF group. While there were no significant group differences in sleep latency, wakefulness after sleep onset, or total arousal index, NCF group had significantly lower minimum oxygen saturation and apnea-hypopnea index in REM (rapid eye movement) sleep compared to CF group. Although the PSQI score and the proportion of poor sleepers were both higher in the CF group (7.40 and 80%) compared to the NCF group (5.50 and 50%), these differences did not reach statistical significance. Conclusions : This study showed that foot temperature affects sleep characteristics and suggests the need to utilize PSG in sleep research in Korean medicine.

Keywords

Acknowledgement

본 연구는 2024년도 한국한의학연구원 기관주요사업인 "빅데이터 기반 한의 예방치료 원천기술 개발"(Grant No. KSN1732121)의 지원을 받아 수행된 연구임

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