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Lewis King, SarahJane Cullen, Jean McArdle, Adrian McGoldrick, Jennifer Pugh, Giles Warrington, and Ciara Losty

A large proportion of jockeys report symptoms associated with mental health difficulties (MHDs), yet most do not seek help from professional mental health support services. Due to the paucity of literature in this field, this study sought to explore jockeys’ barriers to, and facilitators of, help-seeking for MHDs. Twelve jockeys participated in semistructured interviews, subsequently analyzed via reflexive thematic analysis. Barriers to help-seeking included the negative perceptions of others (stigma and career implications), cultural norms (masculinity and self-reliance), and low mental health literacy (not knowing where to seek help, minimization of MHDs, negative perceptions of treatment, and recognizing symptoms). Facilitators to help-seeking included education (exposure to psychological support at a younger age), social support (from professionals, jockeys, family, and friends), and media campaigns (high-profile disclosures from jockeys). Findings are consistent with barrier and facilitator studies among general and athletic populations. Applied recommendations and future research considerations are presented throughout the manuscript.

Open access

Precious Barnes and Matthew Rivera

Context: Active Release Technique® (ART®) is a manual therapy used for soft tissue-related issues, commonly used to lengthen structures in a shortened position and to restore motion of soft tissues. Objective: The purpose of this systematic review was to collect, appraise, and summarize the available literature, evaluating the effects of ART® on pain, range of motion (ROM), and disability. Evidence Acquisition: Electronic databases (PubMed, EBSCOhost, MEDLINE, SPORTDiscus, and CINAHL) were searched from 2000 to November 2020. The search was completed using a combination of key words related to ART®, rehabilitation, and outcomes. Search limits were full-text publications written in English. Inclusion criteria required that studies evaluated outcomes using ART® for rehabilitation, were peer reviewed, and included human participants without catastrophic conditions or injuries. The modified Downs and Black checklist for nonrandomized studies was used to assess methodological quality of identified studies by 2 independent reviewers, average scores were calculated. The level of evidence was assessed using the strength of recommendation taxonomy. Evidence Synthesis: Nine studies were inculded in this review. The average methodological quality of the studies was 12/15 and ranged from 10 to 14, with the most common methodological quality item missed being the blinding of researchers collecting outcomes. Six studies that assessed pain found significant improvements in participants’ pain levels. Six studies that assessed ROM found significant improvement in participants’ ROM. Two studies that assessed disability found significant improvement in disability. Conclusion: Evidence suggests that ART® may be beneficial in improving pain, ROM, and disability. This review found that ART® positively impacted patient outcomes and may be a viable treatment option for clinicians treating musculoskeletal conditions. However, further research is necessary to determine optimal dosage and long-term effects of ART® on these patient outcomes.

Open access

Laura Duval, Lei Zhang, Anne-Sophie Lauzé, Yu Q. Zhu, Dorothy Barthélemy, Numa Dancause, Mindy F. Levin, and Anatol G. Feldman

We tested the hypothesis that the ipsilateral corticospinal system, like the contralateral corticospinal system, controls the threshold muscle length at which wrist muscles and the stretch reflex begin to act during holding tasks. Transcranial magnetic stimulation was applied over the right primary motor cortex in 21 healthy subjects holding a smooth or coarse block between the hands. Regardless of the lifting force, motor evoked potentials in right wrist flexors were larger for the smooth block. This result was explained based on experimental evidence that motor actions are controlled by shifting spatial stretch reflex thresholds. Thus, the ipsilateral corticospinal system is involved in threshold position control by modulating facilitatory influences of hand skin afferents on motoneurons of wrist muscles during bimanual object manipulation.

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Benno M. Nigg

Dr. Richard Nelson contributed to the development of sport biomechanics by being an international facilitator. Together with Dr. Jürg Wartenweiler, he contributed the necessary support and input that allowed the field of Movement and Sports Biomechanics to develop and flourish.

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Robert Shapiro

The author recalls his initial introduction to the field of biomechanics in the Penn State Biomechanics Laboratory, known as the Water Tower, and its positive and profound effect on his lifetime career. Under the directorship of Dr. Richard Nelson, Penn State’s biomechanics program provided the author with a variety of both professional and personal learning opportunities. The author credits these experiences as having a direct relationship to his successful development as teacher, mentor, and researcher.

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Robert W. Norman, Stuart M. McGill, and James R. Potvin

Dr. Richard Nelson is internationally acknowledged in many countries as an extremely important leader in the emergence of biomechanics of human movement as a respected scientific discipline. As his PhD graduates, and, subsequently, their graduates, have become faculty members at many universities, Dr. Nelson’s influence has grown for more than 50 years via several generations of his biomechanics “children.” It was probably never known to him that he also had significant influence on all laboratory-based subdisciplines of the undergraduate and graduate education and faculty research programs of the then new (1967) Department of Kinesiology at the University of Waterloo, Canada. The teaching and research programs included not only biomechanics but also exercise and work physiology, anatomy, biochemistry, and neurophysiology of human movement.

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Doris I. Miller

As the first PhD graduate of the Biomechanics Laboratory at the Pennsylvania State University under the leadership of Dr. Richard C. Nelson, I reflect on my early experience in sport biomechanics there and its influence on some of my subsequent, and typically unpublished, research challenges.

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Robert J. Gregor

Richard C. Nelson started the Biomechanics Laboratory, one of the first of its kind in the world, on the campus of the Pennsylvania State University in 1967. His vision focused on connecting the physiological and mechanical elements of human performance analysis, specifically sport performance. The lab’s engaging, interdisciplinary environment supported self-designed programs of study, benefiting each individual student. Furthermore, the Biomechanics Lab became the nexus for the development of biomechanics as a field of study internationally. Richard Nelson’s diplomatic skills spread the word initially through the formation of the International Society of Biomechanics. This international effort resulted in the development of national societies of biomechanics around the world, for example, the American Society of Biomechanics. Second, these efforts stimulated the concept of sport performance analysis on the international stage. Richard Nelson’s passion was to analyze individual performances at the Olympic Games. This goal was finally realized, with the development of the Subcommission within the International Olympic Committee Medical Commission and biomechanical analysis projects completed at the 1984 Olympic Games in Los Angeles. Richard Nelson’s vision, mentoring style, and dedication planted and nurtured the seed of biomechanics as a discipline of study around the world.