1. The bidirectional relationship between patients’ sleep disorders and their spouses’ sleep quality

   • Yuichi Inoue

   Editorial 08 March 2021 Pages: 111 - 112

2. Assessment of sleep quality in spouses of patients with restless legs syndrome; Are they also restless at night?

   • B. Say
   • M. Hamamcı
   • U. Ergün

   Original Article 03 November 2020 Pages: 113 - 119

   

3. Insomnia is frequent in amyotrophic lateral sclerosis at the time of diagnosis

   • Mathilde Choquer
   • Helene Blasco
   • Nadège Limousin

   Original Article 12 November 2020 Pages: 121 - 126

4. Lifestyle factors and jet lag prevention: a preliminary cross-sectional analysis of travel wellness among Japanese and U.S. business class travelers

   • Hana Hayashi
   • Akihiro Shimoda
   • Ichiro Kawachi

   Original Article 27 November 2020 Pages: 127 - 136

   

5. The anticataplectic and REM suppression effect of milnacipran, an SNRI, on human and canine narcolepsy

   • Yoshihiko Kaneko
   • Yuichi Inoue
   • Hideaki Kondo

   Original Article 01 January 2021 Pages: 137 - 143

   

6. The risk assessment by clinical background and cephalometry for obstructive sleep apnea with CPAP indication in Japanese

   • Shuhei Nozawa
   • Kazuhisa Urushihata
   • Masayuki Hanaoka

   Original Article Open access 05 January 2021 Pages: 145 - 154

   

7. The association between hand grip strenght and global PSQI score in the middleaged and elderly population

   • Jinlin Li
   • Qingping Zhang
   • Xi Zeng

   Original Article 23 January 2021 Pages: 155 - 162

   

8. The quality and duration of sleep are related to hedonic hunger: a cross-sectional study in university students

   • Murat Açik
   • Ayşe Nur Songür Bozdağ
   • Funda Pınar Çakiroğlu

   Original Article 16 January 2021 Pages: 163 - 172

9. Sleep quality and mental health of medical workers during the coronavirus disease 2019 pandemic

   • Yahua Zheng
   • Lili Wang
   • Rui Fan

   Original Article 10 January 2021 Pages: 173 - 180

10. Comparison of autonomic activity between N2 and N3 stages of NREM sleep: evaluation through heart rate variability metrics

    • Erik L. Mateos-Salgado
    • Fructuoso Ayala-Guerrero

    Original Article 12 January 2021 Pages: 181 - 186

11. Changes in sleep patterns of patients undergoing general anesthesia for maxillofacial plastic surgery: a prospective cohort study

    • Ye Wang
    • Lei Wang
    • Fuxia Yan

    Original Article 13 January 2021 Pages: 187 - 193

    

12. The correlation between sleep quality and performance in football athlete

    • Mirza Hapsari Sakti Titis Penggalih
    • Zaenal Muttaqien Sofro
    • Ratna Kusuma Ningrum

    Original Article 11 January 2021 Pages: 195 - 200

13. The prevalence of restless legs syndrome in chronic obstructive pulmonary disease (COPD) patients

    • Mohamad Kazem Momeni
    • Seyed Ali Javad Moosavi
    • Hanieh Raji

    Short Paper 22 January 2021 Pages: 201 - 204