Hitoshi Kagaya

Prof. Hitoshi Kagaya

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Research Focus & Metrics

Academic Career Length

42Years (1985-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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27 October 2013 in Current Physical Medicine and Rehabilitation Reports
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Journal Article
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MGMarlís González-Fernández
Marlís González-Fernández
MHMaggie Lee Huckabee
Maggie Lee Huckabee
SDSebastian H. Doeltgen
Sebastian H. Doeltgen
YIYoko Inamoto
Yoko Inamoto
HKHitoshi Kagaya
Hitoshi Kagaya
ESEiichi Saitoh
Eiichi Saitoh

5 November 2019 in Neuromodulation: Technology at the Neural Interface
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Journal Article
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KFKenta Fujimura
Kenta Fujimura
HKHitoshi Kagaya
Hitoshi Kagaya
CEChiharu Endou
Chiharu Endou
AIAkihito Ishihara
Akihito Ishihara
KNKozue Nishigaya
Kozue Nishigaya
ESEiichi Saitoh
Eiichi Saitoh

25 June 2020 in Journal of Oral Rehabilitation
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Journal Article
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PBPaitoon Benjapornlert
Paitoon Benjapornlert
HKHitoshi Kagaya
Hitoshi Kagaya
YIYoko Inamoto
Yoko Inamoto
EMEriko Mizokoshi
Eriko Mizokoshi
SSSeiko Shibata
Seiko Shibata
ESEiichi Saitoh
Eiichi Saitoh

27 February 2021 in American Journal of Physical Medicine & Rehabilitation
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Journal Article
Open access
YAYoichiro Aoyagi
Yoichiro Aoyagi
YIYoko Slp Inamoto
Yoko Slp Inamoto
SSSeiko Shibata
Seiko Shibata
HKHitoshi Kagaya
Hitoshi Kagaya
YOYohei Otaka
Yohei Otaka
ESEiichi Saitoh
Eiichi Saitoh
Dysphagia is the difficulty in swallowing because of the presence of certain diseases; it particularly compromises the oral and/or pharyngeal stages. In severe acute respiratory syndrome coronavirus 2 infection, neuromuscular complications, prolonged bed rest, and endotracheal intubation target different levels of the swallowing network. Thus, critically ill patients are prone to dysphagia and aspiration pneumonia. In this review, we first discuss the possible cause and pathophysiology underlying dysphagia associated with coronavirus disease 2019, including cerebrovascular events, such as stroke, encephalomyelitis, encephalopathy, peripheral neuropathy, and myositis, that may lead to the dysphagia reported as a complication associated with the coronavirus disease 2019. Next, we present some recommendations for dysphagia evaluation with modifications that would allow a safe and comprehensive assessment based on available evidence to date, including critical considerations of the appropriate use of personal protective equipment and optimization individual’s noninstrumental swallowing tasks evaluation, while preserving instrumental assessments for urgent cases only. Finally, we discuss a practical managing strategy for dysphagia rehabilitation to ensure safe and efficient practice in the risks of severe acute respiratory syndrome coronavirus 2 exposure, in which swallowing therapy using newer technology, such as telerehabilitation system or wearable device, would be considered as a useful option.

1 January 2009 in The Tohoku Journal of Experimental Medicine
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Journal Article
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HKHitoshi Kagaya
Hitoshi Kagaya
HTHitomi Takahashi
Hitomi Takahashi
KSKeiyu Sugawara
Keiyu Sugawara
CKChikage Kasai
Chikage Kasai
NKNoritaka Kiyokawa
Noritaka Kiyokawa
TSTakanobu Shioya
Takanobu Shioya
Patients with chronic obstructive pulmonary disease (COPD) are commonly referred for pulmonary rehabilitation (PR), but the use of PR is not common for patients with restrictive lung disease, neuromuscular diseases, and those who have sustained a severe respiratory illness or undergone thoracic surgery. We investigated the effects of PR in patients with restrictive lung diseases in comparison with COPD patients using a home-based setting. Twenty-six restrictive lung diseases patients and 40 COPD patients who had a Medical Research Council (MRC) dyspnea score ≥ 2, a clinically stable condition, and who had completed a 6-month PR program, were enrolled in the present study. The definition of restrictive lung disease was a forced vital capacity (FVC) of ≤ 80% of the predicted value with a forced effort volume in one second/FVC of > 70%. Our PR consisted of breathing retraining, exercise training, respiratory muscle stretching calisthenics, level walking, inspiratory and expiratory muscle exercises, and a monthly education program. Patients were strongly instructed to practice this program daily at home, and were supervised by a respiratory therapist every 2 weeks in our hospital. Patients with restrictive lung diseases showed the significant increases in inspiratory and expiratory muscle forces, the 6-minute walking distance, the Chronic Respiratory Disease Questionnaire and the Short-Form 36, and decreased MRC scores after 6 months. In conclusion, our home-based PR improves respiratory muscle forces, exercise tolerance, health-related quality of life, and the perception of dyspnea in patients with restrictive lung disease to the same extent as in COPD patients.

22 March 2024 in Nutrition
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Journal Article
Closed access
KKKoki Kawamura
Koki Kawamura
KMKeisuke Maeda
Keisuke Maeda
SMShuzo Miyahara
Shuzo Miyahara
ASAkio Shimizu
Akio Shimizu
YIyuria ishida
yuria ishida
NMNaoharu Mori
Naoharu Mori