Practice report on day-care service C: interprofessional implementation process and social participation outcomes
UNO Hayato; NAGASAWA Yasuhiro
Journal of Physical Therapy for Prevention, 31 Mar. 2026, [Reviewed]

Characteristics of objectively-assessed sedentary behavior patterns among older adults with knee osteoarthritis
Yasuhiro NAGASAWA; Ai SHIBATA; Kaori ISHII; Koichiro OKA
Journal of Physical Therapy for Prevention, 31 Mar. 2025, [Reviewed]

Structural equation analysis of factors related to sedentary behavior and moderate intensity to vigorous-intensity physical activity in older people with chronic musculoskeletal pain
Yasuhiro NAGASAWA; Kaori ISHII; Ai SHIBATA; Koichiro OKA
Japanese Journal of Community-based Comprehensive Physical Therapy, Sep. 2024, [Reviewed]

Physical therapist-delivered acceptance and commitment therapy and exercise for older outpatients with knee osteoarthritis: a pilot randomized controlled trial.
Yasuhiro Nagasawa; Ai Shibata; Hanako Fukamachi; Kaori Ishii; Koichiro Oka
Journal of physical therapy science, Dec. 2022, [Reviewed]
[Purpose] In this pilot study, we investigated the effectiveness of physical therapist-delivered acceptance and commitment therapy in older outpatients with knee osteoarthritis and chronic pain. [Participants and Methods] This single-center, open-label, parallel-group pilot randomized controlled trial included 30 patients assigned to the physical therapist-delivered acceptance and commitment therapy group (n=15) and the usual care physical therapy-only group (n=15). Both treatments were administered once a week for 8 weeks. Evaluation was performed 4 weeks before intervention, pre-intervention, post-intervention, and 4 weeks after intervention. The primary outcome was diagnosis of a physical disability, and secondary outcomes included psychological inflexibility, pain intensity, anxiety, depression, physical function, and objectively measured physical activity. [Results] Physical therapist-delivered acceptance and commitment therapy had a limited effect on physical disability, although we observed a favorable tendency. With regard to secondary outcomes, physical therapist-delivered acceptance and commitment therapy did not show significant effects. Notably, 15 patients withdrew from this study and 6 were diagnosed with coronavirus disease. [Conclusion] Physical therapist-delivered acceptance and commitment therapy did not appear to show significant effects in the present study. It is necessary to correct these issues in this study, and future studies are warranted to investigate the effects of this therapy.

Psychological inflexibility and physical disability in older patients with chronic low back pain and knee pain.
Yasuhiro Nagasawa; Ai Shibata; Kaori Ishii; Koichiro Oka
Pain management, Oct. 2022, [Reviewed]
Aim: This study examined the associations between psychological inflexibility (PI) and physical disability (PD) among older patients with chronic low back and knee pain. Methods: Pain avoidance and cognitive fusion were assessed in outpatients as components of PI and PD, and sociodemographic and pain-related variables were used as covariates. Hierarchical multiple linear regression was used. The covariates were first entered, followed by PI. Results: Age and pain intensity had significant positive associations with PD. After adding PI, only pain avoidance was significantly and positively associated with PD. Conclusion: Focusing on pain avoidance may be effective for physical disability when acceptance and commitment therapy is administered to older patients with chronic low back and knee pain.

The Psychological Inflexibility in Pain Scale (PIPS): Validity and Reliability of the Japanese Version for Chronic Low Back Pain and Knee Pain.
Yasuhiro Nagasawa; Ai Shibata; Hanako Fukamachi; Kaori Ishii; Rikard K Wicksell; Koichiro Oka
Journal of pain research, 2021, [Reviewed]
PURPOSE: The aim of this study was to translate the Psychological Inflexibility in Pain Scale Japanese version (PIPS-J) and inspect its validity and reliability in older patients with chronic low back pain and knee pain. MATERIALS AND METHODS: The PIPS was translated into Japanese by a bilingual linguistic expert and three researchers and administered to 120 outpatients with low back pain and knee pain (61.7% women, age 73.8±7.8 years). Construct validity and criterion validity were evaluated using confirmatory factor analysis and the correlations with the Acceptance and Action Questionnaire-II Japanese version (AAQ-II-J) and the Cognitive Fusion Questionnaire Japanese version (CFQ-J), respectively. Internal consistency using Cronbach's alpha and test-retest reliability (n=43) were also examined. RESULTS: Of all, 78.3% had low back pain, 55.6% had knee pain, and 44.2% both. The confirmatory factor analysis reproduced the original PIPS structure with two factors and indicated good model fit (GFI = 0.915, CFI = 0.970, RMSEA = 0.060). All items' standardized regression weights ranged from 0.35 to 0.80. Criterion validity was shown by correlations of r = 0.58 for PIPS-J pain avoidance with the AAQ-II-J, and r = 0.45 between PIPS-J cognitive fusion and the CFQ-J. Cronbach's alpha for the PIPS-J total score was α=0.85 (pain avoidance: 0.87; cognitive fusion: 0.68). The test-retest correlation for all 12 items was r = 0.54 (pain avoidance: 0.48; cognitive fusion: 0.54). CONCLUSION: Although a less relevant item was found on each of subscales, the PIPS-J appear to be fairly valid and reliable to evaluate psychological inflexibility in chronic pain among Japanese older adults.

The effects of pain coping skills training among older outpatients with osteoarthritis
Oct. 2017, [Reviewed]

疼痛管理にアプローチ -生活リハの痛みに対する認知行動療法-　　　　　　　　　　　　　　　
Jan. 2019, [Invited]
Lead

スキルアップ講座 運動器疼痛を有する高齢者への認知行動療法の応用
Journal of Japanese Society of Oriental Physiotherapy, 2019
Lead, Journal of Japanese Society of Oriental Physiotherapy

リハビリの技術 -第9回- 膝痛がある方への認知行動療法の活用　　　　　　　　　　　　　　　
Dec. 2018, [Invited]
Lead

疼痛管理のための認知行動療法
15 Jul. 2018
Lead

腰痛・膝痛と運動療法—特集 スポーツ・運動療法は患者治療にどこまで有効か ; 各種疾患における運動療法と許容されるスポーツ またはできないスポーツ
Jun. 2016
Lead

図解理学療法検査・測定ガイド
Contributor
Feb. 2023
9784830647048

低栄養を有する重度脳幹出血患者に対して、リハ栄養に着目した介入が 有効であった一症例　　　　　　　　　　　　　　　
Mar. 2024

運動器慢性疼痛を有する高齢者の座位行動および中高強度身体活動に関連する要因の共分散構造分析　　　　　　　　　　　　　　　
Feb. 2024

通所型サービスCにおける面談主体の自立支援が身体機能やQOLに与える効果：予備的研究　　　　　　　　　　　　　　　
Oct. 2023

変形性膝関節症を有する高齢患者の座位行動パターンの記述疫学　　　　　　　　　　　　　　　
Oct. 2023

回復期リハビリテーション病棟における重症高齢患者の改善に関連した要因：入院情報からの検討　　　　　　　　　　　　　　　
May 2022

外来リハビリテーションに通院する膝痛高齢者への痛み対処スキルトレーニングの効果　　　　　　　　　　　　　　　
May 2017

地域在住高齢者における自主参加型教室の参加・継続に関連する要因の質的研究　　　　　　　　　　　　　　　
Jun. 2015

高齢者の運動動機に配慮した健康増進活動の検証　　　　　　　　　　　　　　　
May 2014

May 2026 - Present
日本老年社会科学会　　　　　　　　　　　　　　　

Apr. 2026 - Present
日本体力医学会　　　　　　　　　　　　　　　

Apr. 2017 - Present
日本運動疫学会　　　　　　　　　　　　　　　

Jul. 2009 - Present
日本理学療法士協会　　　　　　　　　　　　　　　

慢性腰痛を有する中高齢者に対しての24時間行動に基づく介入戦略の構築
Apr. 2026 - Mar. 2029

慢性腰痛高齢者の24時間行動と心身機能，Well-beingの関連
Oct. 2025 - Dec. 2026