Author Bios -Injury Prevention & Rehabilitation of Throwing Athletes

Amanda Arnold, PT, DPT, PhD, OCS, SCS

Amanda Arnold, PT, DPT, PhD, OCS, SCS is a sports physical therapist, researcher, and educator. Clinical practice informs her research and drives her teaching, all of which focus on the evaluation and treatment of musculoskeletal dysfunction, with emphasis on the upper extremities. Her research agenda centers around: (1) understanding how physical measures, such as anthropometry, flexibility, and muscle strength, impact injury risk and athletic performance in overhead athletes, and (2) examining how population-specific risk factors, such as sport specialization and physical growth and development, impact injury risk and athletic performance in youth and adolescent athletes. As a primary or co-investigator on multiple university- and industry-supported research projects, she has gained valuable clinical, research, and leadership skills. She is currently the primary investigator in a 3-year prospective analysis of seasonal changes in shoulder range of motion and strength in a cohort of collegiate baseball players. She is a member of the American Society of Shoulder and Elbow Therapists and is passionate about expanding and disseminating knowledge surrounding injury prevention, rehabilitation, and sports performance in overhead athletes, particularly at the youth level.

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Daniel Kline, PT, DPT, SCS

Daniel Kline, PT, DPT, SCS is a lead clinician with ATI Physical Therapy in Greenville, SC. He is an athletic trainer, sports certified specialist, and upper extremity fellowship-trained specialist through ATI PT and the Kansas City Royals. Daniel is the primary mentor and co-lead of the upper extremity section of ATI’s residency and fellowship education, as well one ATI’s continuing education instructors. He has worked in both administrative and clinical excellence roles focusing on improving clinical outcomes for physicians. Prior to ATI PT, he worked as an athletic trainer in the collegiate and high school sports setting, where he implemented arm care and prevention programs. He specializes in the throwing athlete and shoulder instability at ATI. Daniel conducts research on these special populations focusing on return to sport outcomes and outcome measures at time of return to sport, and injury surveillance. Daniel is a member of ASSET, American Society of Shoulder and Elbow Therapist.

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Chelsea Martin, PT, DPT, SCS

Chelsea Martin, PT, DPT, SCS is a clinician with ATI Physical Therapy in Chapel Hill, NC. She completed her sports residency training with ATI Physical Therapy with an emphasis on the shoulder and overhead athlete. Dr. Martin has worked extensively with softball athletes as a former pitching coach at the Division 1 level, and as previous pitching instructor and clinic coordinator at the adolescent level. Currently, she consults with softball coaches, parents, and athletes on pitching mechanics and injury mitigation measures. She has published and contributed to research investigating: (1) clinical measures of the adolescent overhead athlete, (2) collegiate athlete health and well-being, and (3) injury surveillance using publicly available data in the MLB, NHL, and NBA. She is a PhD student at the University of Chapel Hill in the Gillings School of Global Health, Department of Epidemiology, with a focus on sports injury epidemiology.

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Sarah Kate Peterson, PT, DPT, SCS

Sarah Kate Peterson, PT, DPT, SCS is a physical therapist at ATI Physical Therapy in Greenville, SC. She completed her sports residency at ATI Physical Therapy with an emphasis in shoulder instability and dance medicine. She is the primary instructor for the hip section in ATI’s residency program. Dr. Peterson was a dance performance artist prior to her physical therapy career. Dr. Peterson is the owner of Morrigan Movement Arts in which she works with performance artists for strength and conditioning, and injury prevention. Dr. Peterson has been previously published on the topic of shoulder instability and rehabilitation.

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Kathleen Shaughnessy, PT, DPT, OCS, CSCS

Kathleen Shaughnessy, PT, DPT, OCS, CSCS is the head physical therapist for the NWSL team San Diego Wave FC. Prior to taking the job with Wave FC, she completed her orthopedic residency with Memorial Hermann Ironman Sports Medicine, and her Upper Extremity Fellowship with ATI Physical Therapy in Greenville. Following her fellowship, she taught in ATI’s residency and fellowship programs. During her time with ATI, she specialized in shoulder instability and conducted research on return to sport metrics. She is passionate about continuing to expand research regarding the female overhead athlete and management of shoulder instability. Katie has done contract work with the Women’s Tennis Association and the United States Olympic Committee and is a member of the American Society of Shoulder and Elbow Therapists.