Explanipedia

The Development and Preliminary Validation of a Rhythmic Jumping Task for Coordination Assessment: A Task Design Based on Upper and Lower Limb Motor Congruency Open

Runjie Li, Tetsuya Miyazaki, Tomoyuki Matsui, Megumi Gonno, Teruo Nomura , et al. · 2025

Background: The coordination between the upper and lower limbs is essential for athletic performance. However, the structural features that influence coordination difficulty remain insufficiently understood. Few studies have systematically…

Mild hyperbaric hyperoxia improves aerobic capacity and suppresses cardiopulmonary stress during the maximal cycle-ergometer test Open

Kazufumi Hisamoto, Naoki Okubo, Mako Fujita, Hideki Fukushima, Yoshinori Okizuka , et al. · 2025

Aerobic exercise is more recommended than anaerobic exercise for individuals with cardiopulmonary dysfunction to avoid cardiopulmonary stress. However, their oxygen-carrying capacity is already reduced, making it difficult to exercise enou…

Evaluation of Convolutional Neural Network-Based Posture Identification Model of Older Adults: From Silhouette of Sagittal Photographs Open

Naoki Sugiyama, Yoshihiro KAI, Hitoshi Koda, Toru Morihara, Noriyuki Kida · 2025

Background/Objectives: Posture is a significant indicator of health status in older adults. This study aimed to develop an automatic posture assessment tool based on sagittal photographs by validating recognition models using convolutional…

Activation patterns of the deltoid and periscapular muscles at different shoulder flexion angles in patients with nonpseudoparalysis massive rotator cuff tears Open

Hideaki Fukushima, Toru Morihara, Yuichirou Miura, Yoshihiro KAI, Hitoshi Kouda , et al. · 2025

The findings support rehabilitation targeting activation of the deltoid, lower SA, and upper and middle trapezius muscles at different angles through the range of shoulder flexion to facilitate the transition of patients with MRCT from pse…

Clinical outcomes of primary repair for large and massive rotator cuff tears using an all-arthroscopic rotator cuff muscle advancement technique Open

Toru Morihara, Ryuhei Furukawa, Yoshikazu Kida, Yuji Yamada, Rie Kushida , et al. · 2024

Evolution of Key Factors Influencing Performance Across Phases in Junior Short Sprints Open

Kyosuke Oku, Yoshihiro KAI, Hitoshi Koda, Megumi Gonno, Motonao Tanaka , et al. · 2024

Sprint performance plays a crucial role in various sports. Short sprints vary depending on the size of the court/playing field and on competitive characteristics, but are common in many sports. Although the relationship between age and mus…

A Longitudinal Study of the Relationship Between Lower Extremity Field Tests and Medial Elbow Injuries in Elementary School Baseball Players Open

Maki Tanaka, Takuya Okutani, S. Maruyama, Kenji Suehiro, Tomoyuki Matsui , et al. · 2024

This study aimed to examine prospectively the relationship between the deep squatting test and medial elbow injuries in elementary school baseball players and to determine the usefulness of the lower extremity field test in throwing injuri…

Devising a Simple Evaluation Method for Assessing Motor Coordination in the Upper and Lower Limbs Open

Runjie Li, Chisato Yamamoto, Tetsuya Miyazaki, Tomoyuki Matsui, Megumi Gonno , et al. · 2024

Despite copious research, the methods for assessing upper- and lower-limb motor coordination are limited. We devised a simplified evaluation method based on upper- and lower-limb motor coordination jumping and conducted a practical examina…

Agreement in the Postural Assessment of Older Adults by Physical Therapists Using Clinical and Imaging Methods Open

Naoki Sugiyama, Yoshihiro KAI, Hitoshi Koda, Toru Morihara, Noriyuki Kida · 2024

Postural assessment is one of the indicators of health status in older adults. Since the number of older adults is on the rise, it is essential to assess simpler methods and automated ones in the future. Therefore, we focused on a visual m…

Comparison of the Acromiohumeral Interval Measured by Ultrasonography during Shoulder Joint Elevation between Elbow Flexion and Extension Open

Akinori Tatsuda, Ayumi HASHI, Rena Takakura, Subaru HIROTSU, Y. Ishizuka , et al. · 2024

Utility of a new lower limb and trunk functional evaluation for pitchers with focus on the physical characteristics of players with a throwing disorder Open

Tomoyuki Matsui, Yoshikazu Azuma, Machiko Hiramoto, Kazuya Seo, Tetsuya Miyazaki , et al. · 2023

Objectives A pitching motion involves three-dimensional whole body movement. Proper pelvic and trunk rotation movement are important for the prevention of throwing injuries. Given that throwing is not a simple rotation movement, the evalua…

Spinal alignment measurement with Kinect sensor is valid for thoracic kyphosis but not for lumbar lordosis Open

Hitoshi Koda, Yoshihiro KAI, Noriyuki Kida, Toru Morihara · 2023

Background Spinal alignment evaluation is commonly performed in the clinical setting during rehabilitation. However, there is no simple method for its quantitative measurement. Recently, the depth cameras in Kinect sensors have been employ…

Relationship between sport injuries at lower leg and foot and muscle tightness: for puberty to adolescent athletes Open

Megumi Gonno, Masaki Nishio, Noriyuki Kida, Teruo Nomura, Tomoyuki Matsui , et al. · 2023

本研究では，下腿・足部スポ－ツ障害の有無とジャンプ前後の腓腹筋筋硬度の関係を検討することを目的とした。対象はジュニアアスリート43名であった。メディカルチェックでは，下腿・足部障害の有無を評価した。筋硬度測定では，20秒間片足８の字ジャンプをおこなわせ，ジャンプ前後の腓腹筋筋硬度測定を実施した。ジャンプ前後を被験者内要因，障害の有無を被験者間要因とした２要因分散分析をおこなった結果，有意な交互作用がみられた（F=5.586, p=.023）。単純主効果については，ジャンプ前…

Range of motion patterning in trunk and upper and lower extremities of high school baseball pitchers Open

Machiko Hiramoto, Tomoyuki Matsui, Ruo Hashimoto, Yoshikazu Azuma, Kazuya Seo , et al. · 2023

Evaluating range of motion (ROM) using several joints is essential for rehabilitating throwing injuries. We used multivariate analysis to elucidate the ROM patterns in baseball pitchers. This cross-sectional study measured the variable ROM…

Dynamic three-dimensional shoulder kinematics in patients with massive rotator cuff tears: a comparison of patients with and without subscapularis tears Open

Yuji Yamada, Yoshihiro KAI, Noriyuki Kida, Hitoshi Koda, Minoru Takeshima , et al. · 2022

Background: Massive rotator cuff tears (MRCTs) with subscapularis (SSC) tears cause severe shoulder dysfunction. In the present study, the influence of SSC tears on three-dimensional (3D) shoulder kinematics during scapular plane abduction…

Physical functions, to be or not to be a risk factor for osteochondritis dissecans of the humeral capitellum? Open

Jun Sakata, Hiroaki Ishikawa, Ryota Inoue, Daigo Urata, Jun Ohinata , et al. · 2022

Loss of hip IR ROM on the nondominant side is a newly discovered risk factor related to physical function in the development of OCD.

Relationship between Standing Trunk Extension Angle and Medial Elbow Injuries in Young Baseball Pitchers Open

Megumi Gonno, Noriyuki Kida, Teruo Nomura, Tomoyuki Matsui, Yoshikazu Azuma , et al. · 2022

Purpose: The purpose of this study was to investigate the relationship between the standing trunk extension angle and medial elbow injuries. Subjects and methods: The study participants were 90 male baseball pitchers (10–12 years) belongin…

Motion Analysis Focusing on Rotational Movements of Professional Female Baseball Pitchers: Comparison with Male University Baseball Pitchers Open

Yoshikazu Azuma, Tomoyuki Matsui, Machiko Hiramoto, Ruo Hashimoto, Kanta Matsuzawa , et al. · 2021

Purpose: The purpose of this study was to compare pitching motion of the professional female baseball pitchers with the male university baseball pitchers focused on the pelvic and thoracic movements. Subjects and methods: The participants …

Dynamic Three-Dimensional Shoulder Kinematics In Patients With Massive Rotator Cuff Tears: A Comparison of Patients With And Without Subscapularis Tears Open

Yuji Yamada, Yoshihiro KAI, Noriyuki Kida, Hitoshi Koda, Hitoshi Ikeda , et al. · 2021

Background: Massive rotator cuff tears (MRCTs) with subscapularis tears cause severe shoulder dysfunction. This study aimed to examine the influence of subscapularis tears on 3D shoulder kinematics during scapular plane abduction in patien…

Osteochondritis dissecans of the glenoid in adolescent baseball players: a report of 4 cases Open

Kenta Takatsuji, Yoshikazu Kida, Ryuhei Furukawa, Hisakazu Tachiiri, Yusuke Kobayashi , et al. · 2021

Treatment of acromioclavicular joint separations in Japan: a survey Open

Katsumi Takase, Yukihiko Hata, Yutaka Morisawa, Masafumi Goto, Sakae Tanaka , et al. · 2020

Methods used to assess the severity of acromioclavicular joint separations in Japan: a survey Open

Katsumi Takase, Yukihiko Hata, Yutaka Morisawa, Masafumi Goto, Sakae Tanaka , et al. · 2020

The Rockwood classification is commonly used for severity assessments in Japan; however, there is some disagreement regarding the assessment for the diagnosis of type IV. Methods to diagnose both superior and posterior translation of the c…

Trial of the contraction method for transversus abdominal muscle with taping: focusing on the muscle thickness of external oblique, internal oblique and transversus abdominal muscles Open

Tetsuya Miyazaki, Tomoyuki Matsui, Kazuya Seo, Machiko Hiramoto, Yoshikazu Azuma , et al. · 2019

Abdominal draw-in is a functional transversus abdominal muscle exercise to ac- quire the contraction.However, it is difficult for even healthy subjects to selectively contract the deep transversus abdominal and internal oblique muscles wit…

Hip, Trunk, and Shoulder Rotational Range of Motion in Healthy Japanese Youth and High-school Baseball Pitchers Open

Machiko Hiramoto, Toru Morihara, Yoshikazu Kida, Tomoyuki Matsui, Yoshikazu Azuma , et al. · 2019

The effects of age and dominance on ROMs of the neck, trunk, and upper and lower extremities in Japanese youth and high-school baseball pitchers were clarified. These data could be used as a specific reference and as target values for the …

Relationships between Shoulder Injuries during Throwing Motions and the Range of Motions in Junior and Senior High School Baseball Players Open

Tomoyuki Matsui, Toru Morihara, Machiko Hiramoto, Yoshikazu Azuma, Kazuya Seo , et al. · 2018

The purpose of this study was to assess the range of motions of the upper and the lower limbs in junior and senior high school baseball players to examine relationships between the range of motions and shoulder injuries caused during throw…

The laterality of physical function in high school baseball players with shoulder or elbow injury Open

Hitoshi Koda, Yoshihiro KAI, Noriyuki Kida, Tomoyuki Matsui, Yoshikazu Azuma , et al. · 2018

〔目的〕投球肩・肘障害を有する高校野球投手の特徴を，関節可動域や筋力の非投球側差より分析した。〔方法〕京都府下の野球検診に参加した高校野球投手76名を対象とした。測定項目は，投球肩・肘障害の判定，関節可動域および筋力とした。関節可動域および筋力は両側に対して実施し，投球側から非投球側の値を減算することで非投球側差を算出した。統計解析には，投球肩・肘障害ごとに，対応のないt 検定を用いて陽性群と陰性群の関節可動域および筋力の非投球側差を比較した。有意水準は5％とした。〔結果〕…

Prevention of Elbow Injuries in Young Baseball Players: A 6-year Longitudinal Study Open

Yoshihiro Kotoura, Toru Morihara, Yoshikazu Kida, Tsuyoshi Sukenari, Ryuhei Furukawa , et al. · 2018

Objectives: Injuries in young baseball players are on the rise. However, there are few large-scale related to injury prevention activities. We have continued an injury prevention project in Kyoto, Japan since 2010. The aim of this study wa…

Contents Open

Daniel B. Kopans, Jong Lee, Sang Soo Shin, Shin Kim, Suk Hee Heo , et al. · 2018

Prevalence and Characteristics of Osteochondritis Dissecans of the Humeral Capitellum Among Young Baseball Players Open

Yoshihiro Kotoura, Toru Morihara, Yoshikazu Kida, Ryuhei Furukawa, Hisakazu Tachiiri , et al. · 2017

Characteristics of Range of Motion among Women Pro Baseball Players: A Comparison with University Men Open

Machiko Hiramoto, Toru Morihara, Tomoyuki Matsui, Yoshikazu Azuma, Kazuya Seo , et al. · 2017

The purpose of this study was to measure range of motion among professional women baseball players and to identify specific attributes through comparison against university men players. Subjects were 53 professional women baseball players …

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