Uchida H, Ohki S, Kuroiwa C, Tsuchiya K, Kikuchi S, Hirao K .  Association between psychological distress and schizotypy in adults: A cross-sectional study. .  Neuropsychopharmacology reports45 ( 1 ) e12511   2025.3

Uchida H, Miki A, Ida A, Igusa T, Hirao K .  Effects of structured positive feedback intervention on standing reach ability among older adults admitted to a convalescent rehabilitation ward: a small-sample pilot randomized controlled trial. .  European geriatric medicine16 ( 1 ) 325 - 336   2025.2

Uchida H, Igusa T, Higashi Y, Takeda M, Tsuchiya K, Kikuchi S, Hirao K .  Equivalence of Paper and Smartphone Versions of the Beck Depression Inventory-II. .  Journal of clinical medicine14 ( 2 )   2025.1

Yamaya N, Furukawa T, Kitazawa K, Hirao K, Fujita T, Tozato F, Kitamura Y, Oi N, Iwaya T, Tsuchiya K .  A Pattern Combining the Cognitive and Physical Risks Predicts Frailty Reversal in Community-Dwelling Older Individuals 3 years Later: A Decision Tree Analysis. .  Sage open aging11   30495334251365595   2025.1

Igusa T, Uchida H, Tsuchiya K, Sema S, Kaneko S, Yoshita T, Nagai S, Kobayashi T, Akiba T, Tanaka Y, Kikuchi S, Hirao K .  Effects of rhythmic auditory stimulation on gait speed in older adult inpatients in a convalescent rehabilitation ward: a pilot randomized controlled trial. .  European geriatric medicine15 ( 5 ) 1425 - 1435   2024.10

Kikuchi S, Tsutsui N, Nishizawa Y, Tsuchiya K, Shimoda K, Hirao K, Miwakeichi F .  Habituation of Brain Activity with Repetition in Color and Picture-Word Stroop Tests. .  Annals of biomedical engineering52 ( 8 ) 2088 - 2100   2024.8

Sakimoto M, Igusa T, Kobayashi T, Uchida H, Fukazawa A, Machida C, Fujii H, Sekine K, Kurosaki M, Tsuchiya K, Kikuchi S, Hirao K .  Effects of a video-viewing intervention with positive word stimulation on the depressive symptoms of older patients with cardiac disease and subthreshold depression: a pilot randomized controlled trial protocol. .  BioPsychoSocial medicine18 ( 1 ) 16   2024.7

Kobayashi T, Igusa T, Uchida H, Tsuchiya K, Akiba T, Takahashi T, Taguchi M, Okada C, Yabuki H, Kanazawa Y, Kikuchi S, Hirao K .  Reliability of the Two-dimensional Mood Scale for self-reported mood assessment by older adults with dementia. .  Geriatric nursing (New York, N.Y.)58   459 - 465   2024.7

Yabuwaki K, Shinohara K, Fujioka A, Inagaki S, Hirao K .  Effectiveness of Comprehensive Environmental Support for Community-Dwelling Older Adults: A Single-Blind Randomized Controlled Trial. .  The American journal of occupational therapy : official publication of the American Occupational Therapy Association78 ( 3 )   2024.5

Kitazawa K, Tsuchiya K, Hirao K, Furukawa T, Tozato F, Iwaya T, Mitsui S .  Escalation on Kihon Checklist Scores Preceding the Certification of Long-Term Care Need in the Older Population in Japan. A 9-Year Retrospective Study. .  Health services research and managerial epidemiology11   23333928241247027   2024.1

Igusa T, Kobayashi T, Uchida H, Tsuchiya K, Akiba T, Sema S, Kaneko S, Yoshita T, Nagai S, Tanaka Y, Kikuchi S, Hirao K .  Effect of gait training using rhythmic auditory stimulation on gait speed in older adults admitted to convalescent rehabilitation wards: A study protocol for a pilot randomized controlled clinical trial. .  Contemporary clinical trials communications33   101125   2023.6

Hirao K, Takahashi H, Kuroda N, Uchida H, Tsuchiya K, Kikuchi S .  Differences in Center for Epidemiologic Studies Depression Scale, Generalized Anxiety Disorder-7 and Kessler Screening Scale for Psychological Distress Scores between Smartphone Version versus Paper Version Administration: Evidence of Equivalence. .  International journal of environmental research and public health20 ( 6 )   2023.3

Ejiri H, Uchida H, Tsuchiya K, Fujiwara K, Kikuchi S, Hirao K .  Immediate Effects of Mobile Phone App for Depressed Mood in Young Adults with Subthreshold Depression: A Pilot Randomized Controlled Trial. .  Neuropsychiatric disease and treatment19   1695 - 1707   2023

Uchida H, Kuroiwa C, Ohki S, Takahashi K, Tsuchiya K, Kikuchi S, Hirao K .  Assessing the Smallest Detectable Change of the Kessler Psychological Distress Scale Score in an Adult Population in Japan. .  Psychology research and behavior management16   2647 - 2654   2023

Tsuchiya K, Saito M, Okonogi N, Takai S, Jingu Y, Tanaka K, Hirao K, Fujita T, Tanaka Y .  Performing One-Session Cognitive Stimulation to Interact with Patients with Dementia in a Hospital for Mood Improvement: A Retrospective Single-Arm Cohort Study. .  International journal of environmental research and public health19 ( 3 )   2022.1

Azukizawa K, Hirose K, Morigami Y, Higashi N, Uchida H, Hirao K .  Positive-word stimuli via a smartphone application have no immediate-term effects on multi-directional reach ability in standing position: a randomized controlled trial. .  Annals of medicine53 ( 1 ) 1402 - 1409   2021.12

Kageyama K, Kato Y, Mesaki T, Uchida H, Takahashi K, Marume R, Sejima Y, Hirao K .  Effects of video viewing smartphone application intervention involving positive word stimulation in people with subthreshold depression: A pilot randomized controlled trial. .  Journal of affective disorders282   74 - 81   2021.3

Ejiri H, Uchida H, Tsuchiya K, Fujiwara K, Kikuchi S, Hirao K .  Effects of Smartphone-Delivered Positive-Word Stimulation on Depressed Mood in People with Subthreshold Depression: Protocol for a Pilot Randomized Controlled Trial. .  Neuropsychiatric disease and treatment17   2739 - 2748   2021

Uchida H, Hiragaki Y, Nishi Y, Nakahara S, Koumoto J, Onmyoji Y, Fujimoto N, Kawakami K, Ishii M, Hirao K .  An iPad application-based intervention for improving post-stroke depression symptoms in a convalescent rehabilitation ward: A pilot randomized controlled clinical trial protocol. .  Internet interventions21   100340   2020.9

Uchida H, Hirao K .  Prefrontal cortex hypoactivity distinguishes severe from mild-to-moderate social anxiety as revealed by a palm-sized near-infrared spectroscopy system. .  Journal of neural transmission (Vienna, Austria : 1996)127 ( 9 ) 1305 - 1313   2020.9

Kato Y, Kageyama K, Mesaki T, Uchida H, Sejima Y, Marume R, Takahashi K, Hirao K .  Study protocol for a pilot randomized controlled trial on a smartphone application-based intervention for subthreshold depression: Study protocol clinical trial (SPIRIT Compliant). .  Medicine99 ( 4 ) e18934   2020.1

Yoshida I, Hirao K, Kobayashi R .  The effect on subjective quality of life of occupational therapy based on adjusting the challenge-skill balance: a randomized controlled trial. .  Clinical rehabilitation33 ( 11 ) 1732 - 1746   2019.11

Takahashi K, Takada K, Hirao K .  Feasibility and preliminary efficacy of a smartphone application intervention for subthreshold depression. .  Early intervention in psychiatry13 ( 1 ) 133 - 136   2019.2

Yoshida I, Hirao K, Kobayashi R .  Effect of adjusting the challenge-skill balance for occupational therapy: study protocol for a randomised controlled trial. .  BMJ open8 ( 12 ) e022438   2018.12

Takada K, Takahashi K, Hirao K .  Measurement error in the Liebowitz Social Anxiety Scale: results from a general adult population in Japan. .  International journal of psychiatry in clinical practice22 ( 4 ) 289 - 295   2018.11

Uchida H, Tsujino D, Muguruma T, Hino N, Sasaki K, Miyoshi M, Koyama Y, Hirao K .  Low sense of coherence is associated with anxiety among adults: Results based on data from all 47 prefectures of Japan. .  Comprehensive psychiatry86   131 - 136   2018.10

Ohno S, Takahashi K, Inoue A, Takada K, Ishihara Y, Tanigawa M, Hirao K .  Smallest detectable change and test-retest reliability of a self-reported outcome measure: Results of the Center for Epidemiologic Studies Depression Scale, General Self-Efficacy Scale, and 12-item General Health Questionnaire. .  Journal of evaluation in clinical practice23 ( 6 ) 1348 - 1354   2017.12

Hirao K .  Comparison of Hemodynamic Responses in the Prefrontal Cortex According to Differences in Self-Efficacy. .  Biological research for nursing19 ( 4 ) 450 - 455   2017.7

Aoyama Y, Uchida H, Sugi Y, Kawakami A, Fujii M, Kiso K, Kono R, Takebayashi T, Hirao K .  Immediate effect of subliminal priming with positive reward stimuli on standing balance in healthy individuals: A randomized controlled trial. .  Medicine96 ( 28 ) e7494   2017.7

Takahashi K, Takada K, Inoue A, Ohno S, Tanigawa M, Ishihara Y, Uchida H, Hirao K .  Identification of common words to improve self-confidence in Japanese students with subthreshold depression. .  International journal of adolescent medicine and health31 ( 3 )   2017.6

Hirao K .  Two-channel Near-infrared Spectroscopic Analysis of Association of Paranoia Symptoms with Prefrontal Activation. .  Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology12 ( 3 ) 218 - 21   2014.12

Hirao K .  Comparison of Feelings of Inferiority among University Students with Autotelic, Average, and Nonautotelic Personalities. .  North American journal of medical sciences6 ( 9 ) 440 - 4   2014.9

Hirao K .  Changes in flow experience among occupational therapy students: a 1-year longitudinal study. .  Journal of educational evaluation for health professions11   14   2014.7

Hirao K .  Prefrontal hemodynamic responses and the degree of flow experience among occupational therapy students during their performance of a cognitive task. .  Journal of educational evaluation for health professions11   24   2014

Hirao K, Kobayashi R .  Health-related quality of life and sense of coherence among the unemployed with autotelic, average, and non-autotelic personalities: a cross-sectional survey in Hiroshima, Japan. .  PloS one8 ( 9 ) e73915   2013

Hirao K, Kobayashi R .  The relationship between self-disgust, guilt, and flow experience among Japanese undergraduates. .  Neuropsychiatric disease and treatment9   985 - 8   2013

Hirao K, Kobayashi R, Okishima K, Tomokuni Y .  Flow experience and health-related quality of life in community dwelling elderly Japanese. .  Nursing & health sciences14 ( 1 ) 52 - 7   2012.3

Hirao K, Kobayashi R, Yabuwaki K .  Association of cognitive judgment and shyness with frequency and quality of flow experience. .  Psychology research and behavior management5   159 - 62   2012