Works by Kenji Obayashi

Results: 53

Melatonin Secretion and Muscle Strength in Elderly Individuals: A Cross-Sectional Study of the HEIJO-KYO Cohort.

Published in:

2016

By:

Kenji Obayashi;
Keigo Saeki;
Taeko Maegawa;
Junko Iwamoto;
Takahide Sakai;
Naoto Otaki;
Hiroshi Kataoka;
Norio Kurumatani;
Obayashi, Kenji;
Saeki, Keigo;
Maegawa, Taeko;
Iwamoto, Junko;
Sakai, Takahide;
Otaki, Naoto;
Kataoka, Hiroshi;
Kurumatani, Norio

Publication type:

journal article

Increased risk of lung cancer associated with occupational exposure to benzidine and/or beta-naphthylamine.

Published in:

International Archives of Occupational & Environmental Health, 2015, v. 88, n. 4, p. 455, doi. 10.1007/s00420-014-0974-1

By:

Tomioka, Kimiko;
Obayashi, Kenji;
Saeki, Keigo;
Okamoto, Nozomi;
Kurumatani, Norio

Publication type:

Article

Positive Association between Macular Pigment Optical Density and Glomerular Filtration Rate: A Cross-Sectional Study.

Published in:

Journal of Clinical Medicine, 2023, v. 12, n. 16, p. 5312, doi. 10.3390/jcm12165312

By:

Tsujinaka, Hiroki;
Saeki, Keigo;
Obayashi, Kenji;
Nishi, Tomo;
Ueda, Tetsuo;
Ogata, Nahoko

Publication type:

Article

Effect of nighttime bedroom light exposure on mood episode relapses in bipolar disorder.

Published in:

Acta Psychiatrica Scandinavica, 2022, v. 146, n. 1, p. 64, doi. 10.1111/acps.13422

By:

Esaki, Yuichi;
Obayashi, Kenji;
Saeki, Keigo;
Fujita, Kiyoshi;
Iwata, Nakao;
Kitajima, Tsuyoshi

Publication type:

Article

Preventive effect of morning light exposure on relapse into depressive episode in bipolar disorder.

Published in:

Acta Psychiatrica Scandinavica, 2021, v. 143, n. 4, p. 328, doi. 10.1111/acps.13287

By:

Esaki, Yuichi;
Obayashi, Kenji;
Saeki, Keigo;
Fujita, Kiyoshi;
Iwata, Nakao;
Kitajima, Tsuyoshi

Publication type:

Article

Diminished circadian blood pressure variability in elderly individuals with nuclear cataracts: cross-sectional analysis in the HEIJO-KYO cohort.

Published in:

Hypertension Research, 2019, v. 42, n. 2, p. 204, doi. 10.1038/s41440-018-0140-3

By:

Yoshikawa, Tadanobu;
Obayashi, Kenji;
Miyata, Kimie;
Nishi, Tomo;
Ueda, Tetsuo;
Kurumatani, Norio;
Saeki, Keigo;
Ogata, Nahoko

Publication type:

Article

Relationship between melatonin secretion and nighttime blood pressure in elderly individuals with and without antihypertensive treatment: a cross-sectional study of the HEIJO-KYO cohort.

Published in:

Hypertension Research, 2014, v. 37, n. 10, p. 908, doi. 10.1038/hr.2014.99

By:

Obayashi, Kenji;
Saeki, Keigo;
Tone, Nobuhiro;
Kurumatani, Norio

Publication type:

Article

Nocturnal urinary melatonin excretion is associated with non-dipper pattern in elderly hypertensives.

Published in:

Hypertension Research, 2013, v. 36, n. 8, p. 736, doi. 10.1038/hr.2013.20

By:

Obayashi, Kenji;
Saeki, Keigo;
Iwamoto, Junko;
Okamoto, Nozomi;
Tomioka, Kimiko;
Nezu, Satoko;
Ikada, Yoshito;
Kurumatani, Norio

Publication type:

Article

Effects of Cataract Surgery on Melatonin Secretion in Adults 60 Years and Older: A Randomized Clinical Trial.

Published in:

2020

By:

Nishi, Tomo;
Saeki, Keigo;
Miyata, Kimie;
Yoshikawa, Tadanobu;
Ueda, Tetsuo;
Kurumatani, Norio;
Obayashi, Kenji;
Ogata, Nahoko

Publication type:

journal article

Effect of evening light exposure on sleep in bipolar disorder: A longitudinal analysis for repeated measures in the APPLE cohort.

Published in:

Australian & New Zealand Journal of Psychiatry, 2021, v. 55, n. 3, p. 305, doi. 10.1177/0004867420968886

By:

Esaki, Yuichi;
Obayashi, Kenji;
Saeki, Keigo;
Fujita, Kiyoshi;
Iwata, Nakao;
Kitajima, Tsuyoshi

Publication type:

Article

Development and validation of nutrient estimates based on a food-photographic record in Japan.

Published in:

2020

By:

Saeki, Keigo;
Otaki, Naoto;
Kitagawa, Maiko;
Tone, Nobuhiro;
Takachi, Ribeka;
Ishizuka, Rika;
Kurumatani, Norio;
Obayashi, Kenji

Publication type:

journal article

Gender differences in the association between melatonin secretion and diabetes in elderly: The HEIJO‐KYO cohort.

Published in:

Clinical Endocrinology, 2018, v. 89, n. 6, p. 750, doi. 10.1111/cen.13842

By:

Obayashi, Kenji;
Yamagami, Yuki;
Iwamoto, Junko;
Kurumatani, Norio;
Saeki, Keigo

Publication type:

Article

Short-term influence of cataract surgery on circadian biological rhythm and related health outcomes (CLOCK-IOL trial): study protocol for a randomized controlled trial.

Published in:

Trials, 2014, v. 15, n. 1, p. 1, doi. 10.1186/1745-6215-15-514

By:

Saeki, Keigo;
Obayashi, Kenji;
Nishi, Tomo;
Miyata, Kimie;
Maruoka, Shinji;
Ueda, Tetsuo;
Okamoto, Masahiro;
Hasegawa, Taiji;
Matsuura, Toyoaki;
Tone, Nobuhiro;
Ogata, Nahoko;
Kurumatani, Norio

Publication type:

Article

Short-term influence of cataract surgery on circadian biological rhythm and related health outcomes (CLOCK-IOL trial): study protocol for a randomized controlled trial.

Published in:

2014

By:

Saeki, Keigo;
Obayashi, Kenji;
Nishi, Tomo;
Miyata, Kimie;
Maruoka, Shinji;
Ueda, Tetsuo;
Okamoto, Masahiro;
Hasegawa, Taiji;
Matsuura, Toyoaki;
Tone, Nobuhiro;
Ogata, Nahoko;
Kurumatani, Norio

Publication type:

Journal Article

Bedroom Light Exposure at Night and the Incidence of Depressive Symptoms: A Longitudinal Study of the HEIJO-KYO Cohort.

Published in:

American Journal of Epidemiology, 2018, v. 187, n. 3, p. 427, doi. 10.1093/aje/kwx290

By:

Kenji Obayashi;
Keigo Saeki;
Norio Kurumatani

Publication type:

Article

Obayashi et al. Respond to "Light at Night Predicts Depression--What Next?".

Published in:

American Journal of Epidemiology, 2018, v. 187, n. 3, p. 439, doi. 10.1093/aje/kwx289

By:

Kenji Obayashi;
Keigo Saeki;
Norio Kurumatani

Publication type:

Article

Nocturia increases the incidence of depressive symptoms: a longitudinal study of the HEIJO- KYO cohort.

Published in:

BJU International, 2017, v. 120, n. 2, p. 280, doi. 10.1111/bju.13791

By:

Obayashi, Kenji;
Saeki, Keigo;
Negoro, Hiromitsu;
Kurumatani, Norio

Publication type:

Article

Indoor cold exposure and nocturia: a cross-sectional analysis of the HEIJO- KYO study.

Published in:

BJU International, 2016, v. 117, n. 5, p. 829, doi. 10.1111/bju.13325

By:

Saeki, Keigo;
Obayashi, Kenji;
Kurumatani, Norio

Publication type:

Article

Ambient Light Exposure and Changes in Obesity Parameters: A Longitudinal Study of the HEIJO-KYO Cohort.

Published in:

2016

By:

Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

journal article

Association Between Urinary 6-Sulfatoxymelatonin Excretion and Arterial Stiffness in the General Elderly Population: The HEIJO-KYO Cohort.

Published in:

2014

By:

Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

Journal Article

Relationship between asymmetric dimethylarginine and nocturia in the general elderly population: The HEIJO-KYO cohort.

Published in:

Neurourology & Urodynamics, 2015, v. 34, n. 8, p. 769, doi. 10.1002/nau.22647

By:

Obayashi, KENji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

Article

Association between circadian activity rhythms and mood episode relapse in bipolar disorder: a 12-month prospective cohort study.

Published in:

Translational Psychiatry, 2021, v. 11, n. 1, p. 1, doi. 10.1038/s41398-021-01652-9

By:

Esaki, Yuichi;
Obayashi, Kenji;
Saeki, Keigo;
Fujita, Kiyoshi;
Iwata, Nakao;
Kitajima, Tsuyoshi

Publication type:

Article

Assessment of self‐/parent‐reported quality of life in Japanese children with haemophilia using the Japanese version of KIDSCREEN‐52.

Published in:

Haemophilia, 2020, v. 26, n. 2, p. 243, doi. 10.1111/hae.13945

By:

Furuichi, Yasuko;
Nogami, Keiji;
Yada, Koji;
Nezu, Satoko;
Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio;
Nakajima, Mitsuru;
Kinoshita, Seiji;
Shima, Midori

Publication type:

Article

Bodily pain, social support, depression symptoms and stroke history are independently associated with sleep disturbance among the elderly: a cross-sectional analysis of the Fujiwara-kyo study.

Published in:

Environmental Health & Preventive Medicine, 2016, v. 21, n. 5, p. 295, doi. 10.1007/s12199-016-0529-z

By:

Kishimoto, Yuko;
Okamoto, Nozomi;
Saeki, Keigo;
Tomioka, Kimiko;
Obayashi, Kenji;
Komatsu, Masayo;
Kurumatani, Norio

Publication type:

Article

Erratum to: Reliability and validity of Japanese versions of KIDSCREEN-27 and KIDSCREEN-10 questionnaires.

Published in:

2016

By:

Nezu, Satoko;
Iwasaka, Hidemi;
Saeki, Keigo;
Obayashi, Kenji;
Ishizuka, Rika;
Goma, Hideyo;
Furuichi, Yasuko;
Kurumatani, Norio

Publication type:

Erratum

Reliability and validity of Japanese versions of KIDSCREEN-27 and KIDSCREEN-10 questionnaires.

Published in:

Environmental Health & Preventive Medicine, 2016, v. 21, n. 3, p. 154, doi. 10.1007/s12199-016-0510-x

By:

Nezu, Satoko;
Iwasaka, Hidemi;
Saeki, Keigo;
Obayashi, Kenji;
Ishizuka, Rika;
Goma, Hideyo;
Furuichi, Yasuko;
Kurumatani, Norio

Publication type:

Article

Reliability and validity of the Japanese version of the KIDSCREEN-52 health-related quality of life questionnaire for children/adolescents and parents/proxies.

Published in:

Environmental Health & Preventive Medicine, 2015, v. 20, n. 1, p. 44, doi. 10.1007/s12199-014-0427-1

By:

Nezu, Satoko;
Iwasaka, Hidemi;
Saeki, Keigo;
Ishizuka, Rika;
Goma, Hideyo;
Okamoto, Nozomi;
Makino, Hiroko;
Tanimura, Masami;
Yoshizaki, Kazumi;
Obayashi, Kenji;
Kurumatani, Norio

Publication type:

Article

Association between light exposure at night and manic symptoms in bipolar disorder: cross-sectional analysis of the APPLE cohort.

Published in:

2020

By:

Esaki, Yuichi;
Obayashi, Kenji;
Saeki, Keigo;
Fujita, Kiyoshi;
Iwata, Nakao;
Kitajima, Tsuyoshi

Publication type:

Report

Response to commentary: does before bedtime body warming by bathing or other means attenuate sleep-time arterial blood pressure?

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2020, v. 37, n. 5, p. 723, doi. 10.1080/07420528.2020.1758128

By:

Tai, Yoshiaki;
Saeki, Keigo;
Obayashi, Kenji

Publication type:

Article

Association between timing of hot water bathing before bedtime and night-/sleep-time blood pressure and dipping in the elderly: a longitudinal analysis for repeated measurements in home settings.

Published in:

2019

By:

Tai, Yoshiaki;
Saeki, Keigo;
Yamagami, Yuki;
Yoshimoto, Kiyomi;
Kurumatani, Norio;
Nishio, Kenji;
Obayashi, Kenji

Publication type:

Report

Decreased daytime light intensity at nonwindow hospital beds: Comparisons with light intensity at window hospital beds and light exposure in nonhospitalized elderly individuals.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2018, v. 35, n. 5, p. 719, doi. 10.1080/07420528.2018.1430036

By:

Iwamoto, Junko;
Obayashi, Kenji;
Kobayashi, Miwa;
Kotsuji, Toshimichi;
Matsui, Rie;
Ito, Kyoko;
Yoshida, Osamu;
Kurumatani, Norio;
Saeki, Keigo

Publication type:

Article

Light exposure at night is associated with subclinical carotid atherosclerosis in the general elderly population: The HEIJO-KYO cohort.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2015, v. 32, n. 3, p. 310, doi. 10.3109/07420528.2014.974809

By:

Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

Article

Association between light exposure at night and insomnia in the general elderly population: The HEIJO-KYO cohort.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2014, v. 31, n. 9, p. 976, doi. 10.3109/07420528.2014.937491

By:

Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

Article

Association between light exposure at night and nighttime blood pressure in the elderly independent of nocturnal urinary melatonin excretion.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2014, v. 31, n. 6, p. 779, doi. 10.3109/07420528.2014.900501

By:

Obayashi, Kenji;
Saeki, Keigo;
Iwamoto, Junko;
Ikada, Yoshito;
Kurumatani, Norio

Publication type:

Article

Effect of exposure to evening light on sleep initiation in the elderly: A longitudinal analysis for repeated measurements in home settings.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2014, v. 31, n. 4, p. 461, doi. 10.3109/07420528.2013.840647

By:

Obayashi, Kenji;
Saeki, Keigo;
Iwamoto, Junko;
Okamoto, Nozomi;
Tomioka, Kimiko;
Nezu, Satoko;
Ikada, Yoshito;
Kurumatani, Norio

Publication type:

Article

Independent associations of exposure to evening light and nocturnal urinary melatonin excretion with diabetes in the elderly.

Published in:

Chronobiology International: The Journal of Biological & Medical Rhythm Research, 2014, v. 31, n. 3, p. 394, doi. 10.3109/07420528.2013.864299

By:

Obayashi, Kenji;
Saeki, Keigo;
Iwamoto, Junko;
Ikada, Yoshito;
Kurumatani, Norio

Publication type:

Article

Association of Serum Asymmetric Dimethylarginine With Muscle Strength and Gait Speed: A Cross-Sectional Study of the HEIJO-KYO Cohort.

Published in:

Journal of Bone & Mineral Research, 2016, v. 31, n. 5, p. 1107, doi. 10.1002/jbmr.2773

By:

Obayashi, Kenji;
Saeki, Keigo;
Maegawa, Taeko;
Sakai, Takahide;
Kitagawa, Maiko;
Otaki, Naoto;
Kataoka, Hiroshi;
Kurumatani, Norio

Publication type:

Article

The interaction effect between physical and cultural leisure activities on the subsequent decline of instrumental ADL: the Fujiwara-kyo study.

Published in:

Environmental Health & Preventive Medicine, 2019, v. 24, p. 1, doi. 10.1186/s12199-019-0826-4

By:

Masayo Komatsu;
Kenji Obayashi;
Kimiko Tomioka;
Masayuki Morikawa;
Noriko Jojima;
Nozomi Okamoto;
Norio Kurumatani;
Keigo Saeki

Publication type:

Article

Association Between Before-bedtime Passive Body Heating and Nocturia During the Cold Season Among Older Adults.

Published in:

Journal of Epidemiology, 2023, v. 33, n. 8, p. 398, doi. 10.2188/jea.JE20210471

By:

Yoshiaki Tai;
Kenji Obayashi;
Kazuki Okumura;
Yuki Yamagami;
Hiromitsu Negoro;
Norio Kurumatani;
Keigo Saeki

Publication type:

Article

Platelet count and indoor cold exposure among elderly people: A cross-sectional analysis of the HEIJO-KYO study.

Published in:

Journal of Epidemiology, 2017, v. 27, n. 12, p. 562, doi. 10.1016/j.je.2016.12.018

By:

Keigo Saeki;
Kenji Obayashi;
Norio Kurumatani

Publication type:

Article

Risk of Lung Cancer in Workers Exposed to Benzidine and/or Beta-Naphthylamine: A Systematic Review and Meta-Analysis.

Published in:

Journal of Epidemiology, 2016, v. 26, n. 9, p. 447, doi. 10.2188/jea.JE20150233

By:

Kimiko Tomioka;
Keigo Saeki;
Kenji Obayashi;
Norio Kurumatani

Publication type:

Article

Comparisons of Objective Sleep Quality Between Elderly Individuals With and Without Cataract Surgery: A Cross-Sectional Study of the HEIJO-KYO Cohort.

Published in:

Journal of Epidemiology, 2015, v. 25, n. 8, p. 529, doi. 10.2188/jea.JE20140201

By:

Kenji Obayashi;
Keigo Saeki;
Kimie Miyata;
Tomo Nishi;
Nobuhiro Tone;
Nahoko Ogata;
Norio Kurumatani

Publication type:

Article

Lower Melatonin Secretion in Older Females: Gender Differences Independent of Light Exposure Profiles.

Published in:

Journal of Epidemiology, 2015, v. 25, n. 1, p. 38, doi. 10.2188/jea.JE20140035

By:

Kenji Obayashi;
Keigo Saeki;
Nobuhiro Tone;
Junko Iwamoto;
Kimie Miyata;
Yoshito Ikada;
Norio Kurumatani

Publication type:

Article

Health-related Quality of Life (HRQOL) Decreases Independently of Chronic Conditions and Geriatric Syndromes in Older Adults With Diabetes: The Fujiwara-kyo Study.

Published in:

Journal of Epidemiology, 2014, v. 24, n. 4, p. 259, doi. 10.2188/jea.JE20130131

By:

Satoko Nezu;
Nozomi Okamoto;
Masayuki Morikawa;
Keigo Saeki;
Kenji Obayashi;
Kimiko Tomioka;
Masayo Komatsu;
Junko Iwamoto;
Norio Kurumatani

Publication type:

Article

Decreased melatonin secretion in patients with glaucoma: Quantitative association with glaucoma severity in the LIGHT study.

Published in:

Journal of Pineal Research, 2020, v. 69, n. 2, p. 1, doi. 10.1111/jpi.12662

By:

Yoshikawa, Tadanobu;
Obayashi, Kenji;
Miyata, Kimie;
Saeki, Keigo;
Ogata, Nahoko

Publication type:

Article

Higher melatonin secretion is associated with lower leukocyte and platelet counts in the general elderly population: the Kyo-Heijo cohort.

Published in:

Journal of Pineal Research, 2015, v. 58, n. 2, p. 227, doi. 10.1111/jpi.12209

By:

Obayashi, Kenji;
Saeki, Keigo;
Kurumatani, Norio

Publication type:

Article

Association between NT‐proBNP and nocturia among community‐dwelling elderly males and females: A cross‐sectional analysis of the HEIJO‐KYO study.

Published in:

Neurourology & Urodynamics, 2021, v. 40, n. 1, p. 112, doi. 10.1002/nau.24550

By:

Okumura, Kazuki;
Obayashi, Kenji;
Tai, Yoshiaki;
Yamagami, Yuki;
Negoro, Hiromitsu;
Kataoka, Hiroshi;
Kurumatani, Norio;
Saeki, Keigo

Publication type:

Article

Changes in Skin Perfusion Pressure After Endovascular Treatment for Chronic Limb-Threatening Ischemia.

Published in:

2021

By:

Ichihashi, Shigeo;
Takahara, Mitsuyoshi;
Fujimura, Naoki;
Shibata, Tsuyoshi;
Fujii, Miki;
Kato, Taku;
Tsubakimoto, Yoshinori;
Iwakoshi, Shinichi;
Obayashi, Kenji;
Kichikawa, Kimihiko

Publication type:

journal article

Vessel Calcification as a Risk Factor for In-Stent Restenosis in Complex Femoropopliteal Lesions After Zilver PTX Paclitaxel-Coated Stent Placement.

Published in:

2019

By:

Ichihashi, Shigeo;
Shibata, Tsuyoshi;
Fujimura, Naoki;
Nagatomi, Satoru;
Yamamoto, Hiroshi;
Kyuragi, Ryoichi;
Adachi, Akira;
Iwakoshi, Shinichi;
Bolstad, Francesco;
Saeki, Keigo;
Obayashi, Kenji;
Kichikawa, Kimihiko

Publication type:

journal article

Breakfast Skipping and Declines in Cognitive Score Among Community-Dwelling Older Adults: A Longitudinal Study of the HEIJO-KYO Cohort.

Published in:

Journal of Geriatric Psychiatry & Neurology, 2023, v. 36, n. 4, p. 316, doi. 10.1177/08919887221135551

By:

Ishizuka, Rika;
Otaki, Naoto;
Tai, Yoshiaki;
Yamagami, Yuki;
Tanaka, Kunihiko;
Morikawa, Masayuki;
Iki, Masayuki;
Kurumatani, Norio;
Saeki, Keigo;
Obayashi, Kenji

Publication type:

Article