Effect of Exposure to Evening Light on Sleep Initiation in the Elderly: A Longitudinal Analysis for Repeated Measurements in Home Settings
Obayashi K*, Saeki K, Iwamoto J, Okamoto N, Tomioka K, Nezu S, Ikada Y, Kurumatani N
Chronobiol Int, 31(4) 461-467, May, 2014

Independent Associations of Exposure to Evening Light and Nocturnal Urinary Melatonin Excretion with Diabetes in the Elderly
Obayashi K*, Saeki K, Iwamoto J, Ikada Y, Kurumatani N
Chronobiol Int, 31(3) 394-400, Apr, 2014

Health-Related Quality of Life (HRQOL) Decreases Independently of Chronic Conditions and Geriatric Syndromes in Older Adults with Diabetes: the Fujiwara-kyo Study
Nezu S, Okamoto N, Morikawa M, Saeki K, Obayashi K, Tomioka K, Komatsu M, Iwamoto J, Kurumatani N
J Epidemiol, 24(4) 259-266, Apr, 2014

Longitudinal Association of Low Evening indoor Temperatures with Prolonged Sleep Onset Latency in Elderly Individuals: the HEIJO-KYO Study
Annual Scientific Meeting of the Japan Epidemiological Association 2014
Saeki K , Obayashi K , Tone N , Kurumatani N

Association of Indoor Temperature with Circadian Rhythm of Ambulatory Blood Pressure in the Elderly: A Cross-sectional Study of the HEIJO-KYO Cohort
Annual Meeting of Japanese Society for Chronobiology 2013
Saeki K , Obayashi K , Tone N , Miyata K , Iwamoto J , Okamoto N , Tomioka K , Kurumatani N

Association of Cataract Surgery with Objective Sleep Quality in the Elderly: A Cross-sectional Study of the HEIJO-KYO Cohort
Annual Meeting of Japanese Society for Chronobiology 2013
Miyata K , Obayashi K , Saeki K , Tone N , Kurumatani N , Ogata N

Exposure to Light at Night and Impaired Sleep Quality in the Elderly: A Cross-sectional Study of the HEIJO-KYO Cohort
Annual Meeting of Japanese Society for Chronobiology 2013
Obayashi K , Saeki K , Tone N , Miyata K , Iwamoto J , Okamoto N , Tomioka K , Kurumatani N

Exposure to Light at Night and Risk of Depression in the Elderly
Obayashi K*, Saeki K, Iwamoto J, Ikada Y, Kurumatani N
J Affect Disord, 151(1) 331-336, Oct, 2013

Associations between Light Exposure, Melatonin Secretion, and Obesity/Dyslipidemia: A Cross-sectional Analysis of the HEIJO-KYO Study
Architectural Institute of Japan Convention 2013
Obayashi K , Saeki K , Tone N

Nocturnal Urinary Melatonin Excretion is Associated with Non-dipper Pattern in Elderly Hypertensives
Obayashi K*, Saeki K, Iwamoto J, Ikada Y, Kurumatani N
J Affect Disord, 151(1) 331-336, Oct, 2013