Differences in lower extremity kinematics during single-leg lateral drop landing of healthy individuals, injured but asymptomatic patients, and patients with chronic ankle instability- a cross-sectional observational study.
Yuki Sagawa; Takumi Yamada; Takehiro Ohmi; Yoshinao Moriyama; Junpei Kato
PloS one, 2024
The lower-extremity kinematics associated with forward jump landing after an ankle injury is known to differ for patients with Chronic Ankle Instability (CAI), copers (injured but asymptomatic patients), and healthy individuals. However, the differences in the lower extremity kinematics of these groups associated with a Single-leg Lateral Drop Landing (SLDL) are unknown. The purpose of this study is to characterize the lower limb and foot kinematics during SLDL in CAI patients and to compare these characteristics with those of the copers and healthy individuals. This was a cross-sectional observational study. Nineteen participants, each, were selected from the CAI, Coper, and control groups. The lower-extremity kinematics during SLDL was measured using three-dimensional motion analysis over an interval progressing from 200 ms before landing to 200 ms after landing. Either one-way ANOVA or the Kruskal-Wallis test was used to compare the attributes of the respective groups, with each parameter measured every 10 ms. The maximum values and excursions of the parameters were established over time intervals progressing from 200 ms before landing to 200 ms after landing. Significant observations were subjected to post hoc analysis. Compared to the Coper group, the CAI group exhibited significantly smaller hip adduction angles at 160 ms, ankle dorsiflexion angles in the 110-150 ms interval, and maximum ankle dorsiflexion angles after landing. Compared to the control group, the CAI group exhibited significantly smaller excursions of MH inversion/eversion after landing. Our findings confirm the necessity of focusing on the kinematics of hip adduction/abduction and plantar/dorsiflexion during SLDL in evaluating patients with ankle injuries.

Macrostructural Cerebellar Neuroplasticity Correlates With Motor Recovery After Stroke.
Takashi Hanakawa; Fujiko Hotta; Tatsuhiro Nakamura; Keiichiro Shindo; Naoko Ushiba; Masaki Hirosawa; Yutaka Yamazaki; Yoshinao Moriyama; Syota Takagi; Katsuhiro Mizuno; Meigen Liu
Neurorehabilitation and neural repair, Dec. 2023
BACKGROUND: Motor recovery varies across post-stroke individuals, some of whom require a better rehabilitation strategy. We hypothesized that macrostructural neuroplasticity of the motor control network including the cerebellum might underlie individual differences in motor recovery. Objectives. To gain insight into the macrostructural neuroplasticity after stroke, we examined 52 post-stroke individuals using both the Fugl-Meyer assessment and structural magnetic resonance imaging. METHODS: We performed voxel-based lesion symptom mapping and cross-sectional voxel-based morphometry to correlate the motor scores with the lesion location and the gray matter volume (GMV), respectively. Longitudinal data were available at ~8 and/or 15 weeks after admission from 43 individuals with supratentorial lesions. We performed a longitudinal VBM analysis followed by a multiple regression analysis to correlate between the changes of the motor assessment scores and those of GMV overtime. RESULTS: We found a cross-sectional correlation of residual motor functioning with GMV in the ipsilesional cerebellum and contralesional parietal cortex. Longitudinally, we found increases in GMV in the ipsilesional supplementary motor area, and the ipsilesional superior and inferior cerebellar zones, along with a GMV decrease in the ipsilesional thalamus. The motor recovery was correlated with the GMV changes in the superior and inferior cerebellar zones. The regaining of upper-limb motor functioning was correlated with the GMV changes of both superior and inferior cerebellum while that of lower-limb motor functioning with the GMV increase of the inferior cerebellum only. CONCLUSIONS: The present findings support the hypothesis that macrostructural cerebellar neuroplasticity is correlated with individual differences in motor recovery after stroke.

Relationship between weight bearing ratio in sitting and physical function assessment in healthy adults
Yoshinao Moriyama; Ryota Shimamura; Masaki Hirosawa; Takayuki Sakasai; Hayato Machida
Journal of Physical Therapy Science, May 2023, [Reviewed]

Effects of unilateral neck muscle vibration on standing postural orientation and spatial perception in healthy subjects based on stimulus duration and simultaneous stimulation of trunk muscles.
Masaki Hirosawa; Itaru Takehara; Yoshinao Moriyama; Kazu Amimoto
PloS one, 2023, [Reviewed]
Neck muscle vibration (NMV) influences proprioceptive sensations and modulates standing postural orientation and spatial perception. However, the effects of NMV in healthy participants would vary based on the influence of stimulus duration and combination with trunk muscle vibration. Therefore, this study with a cross-over design clarified these effects. Twenty-four healthy participants (mean age, 25.7±3.7 years) were enrolled. To assess standing postural orientation, standing center-of-pressure (COP) measurements were recorded on a COP platform, starting with closed eyes and then with open eyes. The mean mediolateral (ML) and anteroposterior (AP) position [mm] of COP and other parameters were calculated. To assess spatial perception, subjective straight ahead (SSA) measurements were recorded, wherein participants were instructed to point and project the position of the manubrium of sternum on the touch panel using their right index finger with their eyes closed. Measurements were taken before and after four conditions: no vibration (control), left NMV for 30 s, left NMV for 10 min, and left NMV and left lumbar back vibration for 10 min. Vibratory stimulation was performed with the eyes closed at 80 Hz. The measurements under the four conditions were conducted with random cross-over and 5-min resting period between the conditions. COP and SSA values were subtracted before and after each condition for standardized variation and compared. NMV combined with trunk muscle vibration for 10 min resulted in significant deviations of the ML-COP toward the stimulation side and AP-COP toward the anterior side compared to the control condition with closed eyes. SSA showed no significant differences. These findings suggest that NMV-induced nervous system modulation would be amplified by proprioceptive sensory input to trunk muscles. Therefore, this method could provide a new option for clinical trials on postural orientation using NMV. SSA based on proprioceptive sensation may not be biased without visual illusions.

持続的な直流前庭刺激が健常者の主観的垂直認知に及ぼす後作用 二重盲検試験(After-Effect of Prolonged Galvanic Vestibular Stimulation on Subjective Postural Vertical in Healthy Young Subjects: A Double Blind Study)
廣澤 全紀; 網本 和; 新藤 恵一郎; 森山 義尚; 高城 翔太; 藤野 雄次; 万治 淳史; 深田 和浩
日本保健科学学会誌, Dec. 2022

Movement patterns of the functional reach test do not reflect physical function in healthy young and older participants.
Yoshinao Moriyama; Takumi Yamada; Ryota Shimamura; Takehiro Ohmi; Masaki Hirosawa; Tomoyuki Yamauchi; Tomohiro Tazawa; Junpei Kato
PloS one, 2022, [Reviewed]
The relationship of the Functional Reach Test (FRT) value with the Center of Pressure Excursion (COPE) and physical function remains unclear, and would be influenced by different population characteristics and movement patterns used in the FRT. Therefore, we explored the relationship between the FRT value and the COPE and physical function in healthy young and older individuals classified according to movement patterns. In 21 healthy young participants (42 sides) and 20 older participants (40 sides), three-dimensional motion analysis was performed during the FRT and physical function assessments. The participants were assigned to two clusters after performing a motion analysis during the FRT. Kinematic and kinetic parameters during the FRT and physical function assessment results were compared between the clusters for both groups. Correlation analysis was performed to investigate the relationships of the FRT value with COPE and physical function parameters in each cluster, in young and older individuals separately. The results showed that the hip strategies could be divided into two groups according to the degree of use (Small Hip Strategy, SHS Group; Large Hip Strategy, LHS Group). In the older SHS group, the FRT values were significantly correlated with the COPE (r = 0.75), toe grip strength (r = 0.62), and the five-times sit-to-stand test time (r = -0.52). In the older LHS group and in both groups of young individuals, there were no significant correlations of the FRT value with any parameters. The FRT value reflects the COPE and physical function only in older individuals using the SHS. This could explain previous discrepant results. As there is no simple relationship between the FRT value and physical function, it is important to include movement strategy assessment when using the FRT in clinical evaluations.

Relationship between muscle echo intensity on ultrasound and isokinetic strength of the three superficial quadriceps femoris muscles in healthy young adults.
Tomoyuki Yamauchi; Takumi Yamada; Yoshinao Satoh
Journal of physical therapy science, Apr. 2021, [Reviewed]
[Purpose] The purpose of this study was to clarify the relationship between muscle echo intensity measured with ultrasound and the isokinetic strength of each of the three superficial quadriceps femoris muscles in healthy young adults. [Participants and Methods] We measured the echo intensity of the three superficial muscles of the quadriceps femoris in 25 healthy adults (10 males and 15 females; mean age, 22.3 years) using ultrasound. Moreover, we obtained the maximum force during isokinetic knee extension at 60°/s using an isokinetic dynamometer. [Results] In males and females, a significant negative correlation between echo intensity and muscle strength was found in the VM (r=-0.65 and r=-0.63, respectively). [Conclusion] In both males and females, only the muscle echo intensity of the vastus medialis was found to have a negative correlation with the maximum force during isokinetic knee extension at 60°/s. Our data lay the foundation for simplifying and rationally performing the measurement of muscle echo intensity of the quadriceps femoris. And it would therefore be sufficient to only measure the VM to clarify a relationship between EI and maximum isokinetic force in the quadriceps.

入院中の右下腿切断者への自動車運転再開支援 3症例の経験
Nov. 2020, [Reviewed]

The immediate effect of the Honda Walking Assist Device on foot and ankle function in hemiplegic stroke patients.
Yoshinao Satoh; Takumi Yamada; Yasuhisa Arai; Ryota Shimamura; Masaki Hirosawa; Ryota Yamakawa; Shota Takagi
Journal of physical therapy science, Jun. 2020, [Reviewed]
[Purpose] We evaluated the reliability of the measurement function of the Honda Walking Assist Device and investigated the effect of the device on walking improvements, and foot and ankle function, in hemiplegic stroke patients. [Participants and Methods] We recruited 16 hemiplegic stroke patients who performed 10-meter walk tests, twice without assistance and once with device assistance. Based on the rate of change of velocity, we divided the participants into two groups and compared the walking parameters, the toe grip strength, the cross tests, and the maximum step width. Two examiners assessed the 10-meter walk test results, and the authors calculated the intraclass correlation coefficients for walking speed, stride length, cadence, flexion, extension, and scissor angles. [Results] The intraclass correlation coefficients were greater than 0.70 for all the walking parameters we measured. The device increased hip joint movement but did not alter the maximum walking speed of the stroke patients. The patients in the group with a greater change in velocity displayed lower toe grip strength and decreased maximum step width and used orthoses more commonly. [Conclusion] The walking measurement function of the device was reliable. The immediate effect of the device in stroke patients may be influenced by the level of paralysis and the presence of an orthosis.

Comparison of foot kinetics and kinematics during gait initiation between young and elderly participants.
Yoshinao Satoh; Takumi Yamada; Ryota Shimamura; Takehiro Ohmi
Journal of physical therapy science, Jul. 2019, [Reviewed]
[Purpose] To investigate the differences in foot kinetics during gait initiation between young and elderly participants using a modified multi-segment foot model. [Participants and Methods] Twelve young (23.3 ± 2.4 years) and 12 elderly participants (73.3 ± 3.9 years) were included in this study. Gait initiation was measured using a three-dimensional motion analysis system. We calculated the kinetic and kinematic values using our modified multi-segment foot model and compared those values with the values calculated using Bruening et al.'s multi-segment foot model. Modified gait initiation values were also compared between the elderly and young participants. [Results] Our modified multi-segment foot model, created using the Software for Interactive Musculoskeletal Modeling, showed similar values to those reported by Bruening et al. When we compared gait initiation between the elderly participants and their younger counterparts, the elderly exhibited lower torque and power values in the ankle, tarsometatarsal, and metatarsophalangeal joints. Additionally, the elderly exhibited a lower torque ratio in the distal joint than in the proximal joint (torque ratio: ankle joint >tarsometatarsal joint >metatarsophalangeal joint). [Conclusion] The elderly participants had less speed, stride, foot joint movement, moment, and power than the young participants. Moreover, the ratio of joint moment was smaller in the elderly participants. In elderly patients whose walking speed has decreased, consideration of the kinetics of the foot is important when deciding physiotherapy intervention.

半側空間無視による左右非対称な歩容がHONDA歩行アシストを使用した歩行練習によって改善を認めた右大脳半球損傷の一症例
Jun. 2019, [Reviewed]

健常若年者に対する棘上筋腱、肩峰下滑液包、上腕二頭筋長頭腱の厚さの超音波測定の検者間信頼性
Oct. 2017, [Reviewed]

Relative and absolute reliability of ultrasound measurements for the thickness of the soft tissue around the shoulder joint of young normal subjects.
Nobuhisa Ohya; Takumi Yamada; Yoshinao Satoh; Hirobumi Kawamura
Journal of physical therapy science, Apr. 2017, [Reviewed]
[Purpose] The purpose of this study was to examine the reliability of ultrasound measurements by analyzing the relative reliability and absolute reliability when measuring soft tissue thickness around the shoulder joint. [Subjects and Methods] Eleven healthy young adults (22 shoulders) participated in this study. Thickness of the supraspinatus tendon, subacromial bursa, and biceps tendon was measured on both shoulders. This protocol was performed twice in the same day. The relative reliability of ultrasound measurement was evaluated using the intraclass correlation coefficient for determining the degree of consistency and agreement between two measures. The absolute reliability of the ultrasound measurement was evaluated using the standard error of measurement, minimum detectable change, and Bland-Altman analysis. [Results] Ultrasound measurements exhibited high relative reliability: intraclass correlation coefficients for the supraspinatus tendon, subacromial bursa, and biceps tendon thickness were demonstrated to be 0.91, 0.82, and 0.90, respectively. Bland-Altman analyses revealed no significant systematic bias between the repeated measurements for the supraspinatus tendon, subacromial bursa, and biceps tendon thickness. [Conclusion] These findings suggest that ultrasound measurement for the supraspinatus tendon, subacromial bursa, and biceps tendon thickness exhibited good relative reliability and no systematic errors were detected regarding their absolute reliability.

【驚くほどカンタン・わかりやすい!はじめてのリハビリ病棟看護ノート】リハ看護各論 移乗動作の基本
May 2019

【驚くほどカンタン・わかりやすい!はじめてのリハビリ病棟看護ノート】リハ看護各論 臥位、ギャッチアップ、車椅子座位の基本ポジショニング
May 2019

脳卒中後の回復の基礎をなす小脳の構造的神経可塑性(Cerebellar structural neuroplasticity underlying recovery after stroke)　　　　　　　　　　　　　　　
花川 隆; 堀田 富士子; 新藤 恵一郎; 牛場 直子; 廣澤 全紀; 山崎 穣; 佐藤 義尚; 高城 翔太; 水野 勝広; 里宇 明元
臨床神経学, Dec. 2018
(一社)日本神経学会

自動車運転再開を希望した脳損傷者の再開可否による身体機能について　　　　　　　　　　　　　　　
May 2018

回復期病棟にて歩行再獲得した脳卒中患者におけるTrail Walking Testの併存的妥当性に関する予備的研究　　　　　　　　　　　　　　　
May 2017

直流前庭電気刺激の刺激極性と時間経過が主観的身体垂直に及ぼす影響　　　　　　　　　　　　　　　
Jun. 2016

ACL再建術後スポーツ復帰 ステップランジ動作における膝関節パワーの関節間力に対する影響　　　　　　　　　　　　　　　
大見 武弘; 山田 拓実; 佐藤 義尚; 島村 亮太
日本整形外科スポーツ医学会雑誌, Aug. 2015
(一社)日本整形外科スポーツ医学会

ACL再建術後スポーツ復帰 ステップランジ動作における膝関節パワーの関節間力に対する影響　　　　　　　　　　　　　　　
Aug. 2015

前側方の壁が健常成人の立ち上がりに与える影響
Sep. 2010

入院時、入院1ヶ月後における座位下肢荷重率とバランス、歩行能力の変化の関連　　　　　　　　　　　　　　　
06 Oct. 2024

健常成人における運動パターンを規定したFunctional Reach Testの特徴　　　　　　　　　　　　　　　
14 Jun. 2024

慢性足関節不安定症を有する若年成人の片脚側方ジャンプ着地後の下肢関節モーメントの特徴　　　　　　　　　　　　　　　
07 Jan. 2024

健常高齢者のFunctional Reach Test時の運動パターンと測定中の姿勢との関連　　　　　　　　　　　　　　　
14 Oct. 2023

健常成人における座位下肢荷重力と立位での評価との関係性の検討　　　　　　　　　　　　　　　
11 Sep. 2022

慢性足関節不安定症を有する若年成人の片脚側方ドロップジャンプ着地時の足圧中心の位置と変位の特徴　　　　　　　　　　　　　　　
Dec. 2021

Effects of vibratory stimulation for neck and trunk on standing balance in healthy subjects　　　　　　　　　　　　　　　
Masaki HIROSAWA; Kazu AMIMOTO; Itaru TAKEHARA; Yoshinao MORIYAMA; Shota TAKAGI
Oct. 2021

健常成人と高齢者におけるLateral Reach Testの運動パターンと身体機能との関係　　　　　　　　　　　　　　　
Oct. 2021

健常成人と高齢者におけるFunctional Reach Testの運動パターンと身体機能との関係-運動パターンごとのリーチ距離とCenter of Pressure移動距離，身体機能の検討-　　　　　　　　　　　　　　　
Dec. 2020

健常成人女性のFunctional Reach Testにおける運動パターンと運動力学の解析　　　　　　　　　　　　　　　
Dec. 2019

Influence of Insoles on Healthy Young Women's Foot Motion and Knee Adduction Moment During Walking　　　　　　　　　　　　　　　
Jun. 2019

Online effect and after effect of neck muscle vibration on standing in healthy individuals　　　　　　　　　　　　　　　
Jun. 2019

Relationship between foot and ankle function and immediate effect of the Honda Walking Assist device in hemiplegic stroke patients　　　　　　　　　　　　　　　
Yoshinao Satoh; Takumi Yamada; Yasuhisa Arai; Ryota Shimamura; Masaki Hirosawa; Ryota Yamakawa; Shota Takagi
Jun. 2019

ローテーティングヒンジ型人工膝関節を用いた再置換術後患者の歩行解析　　　　　　　　　　　　　　　
Feb. 2019

右人工膝関節前置換術後ゆるみに対して再置換術を施行された一症例における歩行解析：術前と術後6ヶ月の縦断的調査　　　　　　　　　　　　　　　
Dec. 2018

脳卒中片麻痺患者におけるHONDA歩行アシストの効果と足部・足関節機能との関係　　　　　　　　　　　　　　　
Nov. 2018

自動車運転再開を希望した脳損傷者の再開可否による身体機能について　　　　　　　　　　　　　　　
Jun. 2018

HONDA歩行アシストの検者内，検者間信頼性の検討　　　　　　　　　　　　　　　
Jun. 2018

ローテーティングヒンジ型人工膝関節施行患者の歩行解析　　　　　　　　　　　　　　　
Feb. 2018

HONDA 歩行アシストを使用して歩行動作の効率化を認めた脳卒中の一症例　　　　　　　　　　　　　　　
Sep. 2017

半側空間無視による非対称的な歩容がHonda 歩行アシストを使用した歩行練習によって改善を認めた脳卒中 1 症例　　　　　　　　　　　　　　　
Sep. 2017

脳卒中片麻痺患者におけるHONDA 歩行アシストの効果と足関節機能との関係- 予備的研究-　　　　　　　　　　　　　　　
Sep. 2017

Relationship between foot and ankle function and effect of the walking assist device in healthy young subjects　　　　　　　　　　　　　　　
WCPT-AWP&PTAT Congress2017, 28 Jun. 2017

回復期病棟にて歩行再獲得した脳卒中患者におけるTrail Walking Testの検者内信頼性　　　　　　　　　　　　　　　
May 2017

ローテーテイング型人工膝関節一患者の歩行解析　　　　　　　　　　　　　　　
Feb. 2017

Simulation of the effect of decreasing lateral component of floorground reaction force during walking on mechanical stress of knee joint　　　　　　　　　　　　　　　
Oct. 2016

Hip Joint Reaction Force in the Single Leg Standing and Kneeling Postures　　　　　　　　　　　　　　　
Kawashima A; Yamada T; Ohmi T; Satoh Y; Shimamura R
Oct. 2016

Comparison of Foot Kinetics in the Frontal Plane during Gait Initiation between Young and Elderly Subjects　　　　　　　　　　　　　　　
Satoh Y; Yamada T; Ohmi T; Shimamura R
Asian Confederation of Physical Therapy Congress, Oct. 2016

高齢者と若年者の歩行開始動作における股関節・距腿関節・足部・足趾の関節パワーの検討　　　　　　　　　　　　　　　
May 2016

ステップランディング動作における前額面下肢関節モーメント・パ ワーの関節間力に対する影響　　　　　　　　　　　　　　　
Nov. 2015

歩行動作における下肢関節パワーの膝関節間力に対する影響　　　　　　　　　　　　　　　
Sep. 2015

健常成人の自由歩行における膝関節間力の速度による影響　　　　　　　　　　　　　　　
Jun. 2015

Correlation between joint reaction force and gait speed in Osteoarthritis of the knee.　　　　　　　　　　　　　　　
Ohmi T; Yamada T; Satoh Y
Jun. 2015

Comparison of Foot Kinetics during Gait Initiation between Young and Elderly Subjects　　　　　　　　　　　　　　　
Yoshinao Satoh; Takumi Yamada; Ryota Shimamura; Takehiro Ohmi
9th World Congress of the International Society of Physical and Rehabilitation Medicine, Jun. 2015

歩行開始動作における高齢者と若年者の足部運動のMulti-segment Foot Modelによる解析　　　　　　　　　　　　　　　
May 2015

脳卒中片麻痺患者の簡便かつ高精度な身体機能評価法の確立
31 Aug. 2023 - 31 Mar. 2025

慢性足関節不安定症を有する若年成人の側方ジャンプ着地時の足関節角度・筋張力と足圧中心位置との関連　　　　　　　　　　　　　　　
2021 - 2022

パーキンソン病の運動療法 ～椅子に座ってできる自主トレ～　　　　　　　　　　　　　　　
lecturer
30 Jul. 2024 - 30 Jul. 2024

パーキンソン病の運動療法の講義と実践　　　　　　　　　　　　　　　
lecturer
02 Nov. 2023 - 02 Nov. 2023

第43回東京都理学療法学術大会 アワードセッション 座長　　　　　　　　　　　　　　　
Panel chair etc
14 Sep. 2024 - 15 Sep. 2024