The purpose of this study was to examine the characteristics of unilateral counter-movement jump motion in individuals with a history of groin pain using 3D motion analysis and electromyography. We compared the results of 9 limbs of 8 soccer players in the groin pain group and 14 limbs of 7 soccer players in the healthy control group.

The results demonstrated that the angles and angular velocities of trunk lateral flexion and pelvic elevation, as well as the angles of trunk rotation and hip flexion, were significantly lower in the groin pain group than in the healthy control group (p < 0.05). Additionally, the mean muscle activity of the transversus abdominis/internal oblique muscles during the descent phase of a jump was significantly lower in the groin pain group than in the healthy control group (p < 0.01). These findings suggest that individuals in the groin pain group perform jump movements with diminished engagement of trunk, pelvic, and hip joint motion, accompanied by decreased activation of the transversus abdominis/internal oblique muscles.

This study investigated and compared the incidence of shoulder and elbow injuries among 464 high school baseball players in Chiba Prefecture over a 10year period from 2014 to 2023, based on playing position and season.

The results showed that pitchers had the highest incidence of shoulder and elbow injuries, followed by catchers, who also exhibited higher rates than other positions. In addition, pitchers had a significantly higher incidence of shoulder and elbow injuries during the in-season compared to the off-season.

Furthermore, even during the off-season, the incidence of injuries among pitchers was approximately twice as high as that of infielders and outfielders.

This study aimed to develop a heat acclimation protocol for Japan Coast Guard officers to optimize their performance in the heat and prevent exertional heat illness. The protocol involved 10 indoor treadmill exercise sessions scheduled within twelve-days (i.e., two weeks, excluding the weekends). The program induced physiological adaptations indicative of heat acclimation, with lowered average heart rate and internal body temperature; however, no change was observed in sweat volume. Further study is warranted to identify an appropriate training load that can safely and effectively induce heat acclimation in settings with limited equipment and access to a laboratory setting.

A 33-year-old male professional basketball player suddenly collapsed during a game due to cardiac arrest. The home head athletic trainer immediately activated the EAP and the whole emergency care team responded. The patient was not only successfully resuscitated at the scene, but also able to return to his daily life with no further symptoms or disabilities. This represents as the first ever case in which an AED was used on an athlete in the B.LEAGUE. The purpose of this article is to report on the details of the incident and identify the factors that contributed to effective management of the case, as well as considerations for future practice.

This study aimed to explore the GPA characteristics of JSPO-AT certified students in sports- related universities. We compared the GPAs of 15 students who passed the certification exam with 26 students who failed. The results showed that the GPA of the successful students was significantly higher than that of the unsuccessful students across grade levels, general education subjects, specialized subjects, and athletic training subjects (p<0.05). It was suggested that in addition to education throughout the four years of university and specialized education, liberal arts education is also important in JSPO-AT education.

This study investigated the effects of cooling and compression stimuli on shoulder internal rotation range of motion (ROM) following load applied to the external rotator muscles. Forty-five healthy university students participated in the experiment and were randomly assigned to one of three groups: cooling, compression, or control. ROM measurements were taken 20 minutes and 24 hours after the exercise. The results showed that the control group exhibited no significant changes in ROM over time. In contrast, the cooling group showed a significant decrease, while the compression group demonstrated a significant increase in ROM at both time points. These findings suggest that cooling may lead to temporary stiffness in shoulder rotation, whereas compression may help maintain or even improve flexibility. However, individual responses varied considerably, emphasizing the importance of tailoring recovery interventions based on each athlete’s specific reaction. This highlights the need for personalized evaluation when applying such methods in clinical or athletic settings.

This study aims to analyze the new curriculum of the Japan Sports Association Certified Athletic Trainer (JSPO-AT) program from the perspectives of scope and sequence, with the goal of identifying underlying issues. The JSPO-AT curriculum is designed as a stepwise progression, consisting of Common Subjects III, Basic Specialized Subjects, and Specialized Subjects. It also features a spiral structure, characterized by the intentional overlap and reinforcement of content across subjects. While previous studies have identified career development as a secondary challenge within the JSPO-AT educational framework, the present analysis suggests that a systematic examination of practical training, in terms of its scope and sequence, may offer effective pathways for addressing such challenges. By clarifying the curricular structure and its progression, this study contributes to the ongoing refinement of JSPO-AT education, particularly in aligning practical training with broader educational objectives and professional competencies.

In this study，we compared the prevalence of generalized joint laxity and localized joint laxity between 62 female high school rhythmic gymnasts and 86 female participants with no experience in aesthetic sports.

The results showed that the prevalence of generalized joint laxity was significantly higher in the rhythmic gymnasts compared to the female group with no experience in aesthetic sports (p<0.05). For localized joint laxity, the rhythmic gymnasts exhibited significantly higher in the hip joints, both knee joints, and spine, while compared to the female group with no experience in aesthetic sports (p<0.05).

The findings of this study clarified the characteristics of joint laxity in female high school rhythmic gymnasts.