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Background Arm care programs consisting of upper extremity strengthening and stretching have been recommended for injury prevention for pitchers of all ages. There has been no investigation into high school baseball coaches’ usage and perceptions of arm care programs to mitigate physical impairments associated with injuries in baseball players. # Hypothesis/Purpose The purpose of this study was to investigate the current usage of arm care programs by high school baseball coaches. The primary objective was to determine if coaches use group-based or individualized arm care programs. The secondary objective sought to determine if the use of arm care programs is influenced by coaches’ age, education, and experience level. Finally, this study explored the potential barriers to arm care implementation and high school baseball coaches’ current awareness and beliefs of injury prevention. # Study Design Descriptive cross-sectional survey # Methods A 29-item online survey was emailed to 18,500 high school baseball coaches throughout the United States. Data were collected for three months, and the response rate was 3.7%. # Results A total of 87.3% (n=571/654) of responding coaches use arm care programs with their players. Of coaches performing arm care, only 18.5% of 571 individualize their arm care exercises based on specific player needs. However, older and more experienced coaches are more likely to individualize their programs. Among the 12.7% (n=83/654) of coaches who do not use arm care programs, the two most commonly cited reasons for not implementing arm care were lack of observed benefit (41%) and insufficient staff (31%). Although 42% of 654 coaches recognized reduced shoulder mobility as a major contributor to injury, risk factors such as throwing with a fatigued arm, previous injury history, and throwing \> 8 months per year were not consistently identified as primary risk factors. # Conclusion The results of this study suggest that the majority high school baseball coaches implement group-based arm care exercise programs to prevent injury. Lack of confidence in the effectiveness and staffing limitations were major barriers to implementation of arm care programming. However, the responding coaches exhibited inconsistent risk factor awareness and dated injury prevention beliefs. Therefore, better educational collaboration between rehabilitation professionals and high school coaches regarding injury risk factors and preventative strategies is warranted. # Level of Evidence Level 3

Background Trunk stability is a risk factor commonly associated with lower extremity injuries, particularly in females. Performance on trunk stability tasks, such as the Trunk Stability Push Up (TSPU), is less than optimal in females. Current corrective programs include few females, and clinically, improvements for females have been minimal. Purpose/Hypothesis The purpose of this pilot study was to determine the effectiveness of a novel trunk stability intervention program in improving TSPU performance in a cohort of active female participants. It was hypothesized that ≥60% of participants would improve their TSPU scores to ≥2 via Functional Movement Screen™ (FMS™) criteria following a novel six-week intervention program. Study Design Pilot Cohort Study Methods Participants were screened for pain with lumbar and shoulder clearing tests and hypermobility was assessed using Beighton scores. Additional testing included a breathing screen, the FMS™, Y-Balance Test-Lower Quarter and Y-Balance Test-Upper Quarter. Participants who scored a 1 on the TSPU received a home exercise program instructed by student physical therapists. Exercises focused on improving awareness of lumbar spine position and thoracic spine mobility. Participants returned for follow-ups after two and four weeks for instruction in exercise progression, which increased postural demand on the lumbar spine and upper extremities, and utilized closed-chain, multiplanar stability strategies. Results Nine of 20 participants (45%) scored ≥2 on the TSPU at posttest. Due to the COVID-19 pandemic, only 12 participants were able to complete all posttest outcome measures. No significant differences were noted in the remaining outcome measures. Conclusion: The results of this study indicate that a multiplanar exercise approach, combining anti-extension and anti-rotation training, was beneficial for inducing trunk stability improvements in some active females. Level of Evidence 2b