Publications by authors named "Nagamoto H"

Relationship between ability to perform the deep squat test (DST) and floating toes among baseball players with disabled throwing shoulder/elbow was retrospectively investigated. Players performed the DST by fully squatting while having their arms crossed in front of their chest without lifting the heel off the floor or falling backwards. Floating toes were evaluated if all the toes were in contact with the mat or not.

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Introduction: This study examined the relationship between ball release points and pitching performance among professional baseball pitchers, with a focus on variability.

Methods: We used open-source data to compare ball release point variability between Major League Baseball (MLB) and Minor League Baseball (MiLB) players. The relationship between pitching performance and variability was analyzed using multiple regression analysis.

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Background: Radial pressure wave (RPW) has been introduced to sports sites as an alternative tool to massage, and there have been reports of irradiating muscles. This study aimed to clarify the effects of RPW irradiation on muscles, focusing on muscle morphology and muscle/fascial elasticity.

Methods: The participants were 23 healthy, able-bodied participants.

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Background: This study investigated the impact of total knee arthroplasty (TKA) on the alignment of the ankle joint, focusing on changes in coronal alignment of both ankles.

Methods: This retrospective study, conducted at our hospital, included 64 patients older than 70 years who underwent TKA for varus knee osteoarthritis (OA). Using full-length standing radiographs of both lower extremities taken preoperatively and 6 months postoperatively, we assessed ankle OA grading based on the Takakura-Tanaka classification and measured mechanical hip-knee-ankle (mHKA) and the tibiotalar angle (TTA) on both the surgical and contralateral side.

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  • Electrical stimulation applied to the plantar foot can enhance the function of intrinsic foot muscles and improve postural stability during landing, which is crucial for injury prevention in athletes.
  • A study with twenty-two college athletes found that those receiving electrical stimulation demonstrated significant improvements in toe function and tactile sensation compared to a control group.
  • The findings suggest that electrical stimulation may be an effective method to enhance landing stability and potentially reduce the risk of sports injuries.
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  • - The FLOW program helps mental health providers move patients who have stabilized in specialty mental health care to primary care, aiming to improve access to such services across nine VA sites, where implementation was varied.
  • - The study uses the Consolidated Framework for Implementation Research (CFIR) to identify factors that contribute to successful implementation, utilizing a mixed-methods approach to analyze different metrics across the sites.
  • - Key themes for successful implementation include positive perceptions of the FLOW intervention, a supportive recovery-oriented care culture, low turnover of mental health providers, and effective internal facilitators, while other aspects like staffing and leadership support showed inconsistent effects.
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We report three cases of young athletes with symptomatic ossicles of the medial malleolus who underwent arthroscopic resections of the ossicle combined with deltoid ligament repair. A differential diagnosis of the ossicles beneath the medial malleolus, accessory ossification center, avulsion fracture resulting in pseudoarthrosis, and accessory bone such as os subtibiale has been proposed. However, it is difficult to differentiate them clearly.

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  • The study examines how toe flexor strength is generated by the flexor hallucis longus (FHL) and intrinsic foot muscles, highlighting two toe flexion methods: toe grip (TG) and toe push-down (TP).
  • It investigates the differences in muscle activity of FHL and abductor hallucis (AbdH) in three conditions: TG, TP with interphalangeal joint flexion (TPIF), and TP with extension (TPIE) using surface electromyography on 28 men.
  • Findings show that FHL activity is greater during TG and TPIF compared to TPIE, while AbdH activity is higher during TPIF and TPIE, indicating that the choice of toe flex
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The FLOW program was designed to facilitate appropriate and safe transitions of patients from specialty mental health (SMH) to primary care (PC) as a method of improving access and reducing appointment burden on veterans who have improved or remitted. In this study, the team evaluated the implementation of FLOW across nine Veterans Affairs (VA) sites using a mixed-methods evaluation in a cluster-randomized stepped wedge trial design. Outcome assessments used data from VA databases, dashboards, and semi-structured interviews and were guided by the Reach, Adoption, Effectiveness, Implementation, and Maintenance (RE-AIM) framework.

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Rationale: Osteochondral lesions on the lateral process of the talus involving the subtalar joint are rare; the optimal surgical treatment remains to be clarified as there are few reports. Additionally, bilateral cases are extremely rare. Therefore, the clinical outcomes of the surgical treatment for bilateral osteochondral lesions on the lateral process of the talus involving the subtalar joint have not been fully elucidated.

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  • The study examined foot function issues in 138 male baseball players, focusing on those with shoulder/elbow pain compared to those without.
  • Results showed that 27% of players had a history of shoulder/elbow pain, while 7% reported pain during the examination, indicating a significant relationship between injuries and foot function problems.
  • Specifically, impaired foot function was more prevalent on the non-throwing side (60%) and the throwing side (60%) of injured players compared to non-injured ones, highlighting the impact of throwing shoulder/elbow disabilities on foot health.
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  • The menstrual cycle is a key health indicator for female athletes, particularly elite adolescent dancers who face pressure to control their weight while training intensely, potentially leading to menstrual disorders.
  • This study involved 131 female elite adolescent dancers, measuring their body composition and menstrual patterns, revealing that a significant portion experienced menstrual issues, particularly those with lower body fat percentages.
  • Findings highlight that lower body fat percentage may contribute to menstrual disorders in these dancers, emphasizing the need for monitoring both body composition and menstrual health in this population.*
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Background: Floating toes are a condition and deformity in which some of the toes are afloat. Many functional impairments in floating toes have been previously studied lately and several factors related to floating toes have also been reported. However, no reports have considered the relationship between lifestyle and floating toes among children.

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  • The case report focuses on using musculoskeletal ultrasound imaging to assess and improve knee stiffness in a patient after total knee arthroplasty.
  • An 82-year-old woman was treated for limited knee flexion affecting her daily activities, and ultrasound helped identify the issue as decreased tissue movement in the suprapatellar pouch.
  • After ultrasound-guided passive manipulation, her knee flexion increased and she regained the ability to climb stairs, showing significant improvement in mobility and daily functions.
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  • * Out of 38 male goalkeepers, 16% were found to have a history of DTS, with notable differences in scapular positioning and rotator cuff strength compared to those without DTS.
  • * Findings suggest that issues like scapular malpositioning and limited scapular retraction may be linked to the occurrence of DTS in these athletes.
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Background: Adolescent DanceSport athletes who regularly dance in high heels have a higher possibility of developing hallux valgus deformity and foot pain. We believe that the occurrence of foot disorders may change the loading on their feet, which thus affects the athletic performance of those adolescents.

Methods: A total of 63 adolescent DanceSport athletes (16 boys, 47 girls) were included.

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  • - The study investigates how changes in soft-tissue structures affect shoulder function in baseball players, particularly focusing on the relationship between these changes and pathologic internal impingement.
  • - Involving 81 high-school baseball players, the research compares two groups: those with internal impingement and a control group, specifically analyzing humeral retroversion and ranges of motion in external and internal rotations.
  • - Findings reveal that the internal impingement group exhibited a significantly greater difference in soft-tissue-related external rotation compared to the control group, suggesting that soft-tissue changes are linked to internal impingement in throwing athletes.
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The prevalence of impaired foot function and floating toes of 91 baseball players with disabled throwing shoulder or elbow were retrospectively investigated. Foot function was evaluated by foot "rock paper scissors" and floating toes were confirmed if none of the toes made contact with the mat in standing posture. The prevalence of impaired foot function and floating toes and the relationship between between them were determined.

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Unlabelled: Relationship between sports and spondylolysis fracture angle (SFA), and hip internal rotation range of motion (IR ROM) between the sports groups among athletes with spondylolysis were investigated. Sports requiring repeated rotation of the trunk and hips during most aspects of the activity was defined as rotation-related sports (RRS). The SFA was defined as rotation-type or horizontal-type by using the axial view of the CT scan.

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Medial open wedge high tibial osteotomy (OWHTO) is usually performed with proximal tuberosity osteotomy or setting the osteotomy line proximal to the tuberosity. However, OWHTO can result in patellofemoral complications due to postoperative patella infera. A new OWHTO technique, biplanar osteotomy with a distal tuberosity osteotomy, was reported in 2004 to prevent postoperative patella infera.

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The current study protocol regards a partnered, mixed-methods, cluster-randomized stepped wedge trial of the implementation and effectiveness of the FLOW program. FLOW (not an acronym) is a collection of resources and strategies to assist in determining which recovered or stabilized specialty mental health (SMH) patients should transition back to primary care (PC) and tools to make the transition seamless. Transitioning appropriate patients to PC can increase access and timeliness of mental health care for newly referred mental health patients.

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Background: The relationship between the results of the Star Excursion Balance Test (SEBT) and lateral ankle sprain (LAS) among youth football players was investigated.

Methods: The dominant leg and history of LASs were asked from 33 male youth football players. The SEBT in the anterior, posterolateral, and posteromedial directions were measured for both limbs.

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Background: Loop diuretics are used to manage fluid retention in patients with end-stage kidney disease undergoing hemodialysis (HD). This randomized, double-blind, placebo-controlled, Phase 2 trial evaluated the efficacy and safety of tolvaptan, a vasopressin V2 receptor antagonist, in Japanese HD patients.

Methods: A total of 124 patients (24-h urine volume ≥500 mL) on thrice-weekly HD were randomized to receive oral tolvaptan 15 mg/day (n = 40), tolvaptan 30 mg/day (n = 40) or placebo (n = 44) for 24 weeks.

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Background: Pitch velocity is associated with elbow injuries among skillful baseball players. However, the relationship between pitch velocity and throwing elbow injuries among youth players has not yet been clarified.

Purpose: To investigate the influence of pitch velocity on medial elbow pain and medial epicondyle abnormality among youth baseball players.

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  • - The study investigated how different assessments of oral mucositis severity from chemoradiotherapy can impact cancer treatment outcomes, emphasizing the need for effective therapies to manage this side effect.
  • - Researchers compared the severity grades of oral mucositis evaluated by local investigators and an independent central review, finding a significant discrepancy of 34% between the two assessments.
  • - The results showed differences in the rates of severe mucositis among treatment groups, indicating that using a standardized and objective evaluation method is crucial for improving clinical trial accuracy and treatment effectiveness.
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