Group exercise instructors are at particular risk for performance-related injuries because many teach multiple classes each day where they repetitively demonstrate exercise moves. To assess performance-related injuries, a paper-pencil survey was mailed to 1000 randomly selected American Council on Exercise certified group exercise instructors. Questionnaire respondents included 386 professionally certified female instructors from 48 states. Most injuries reported (77%) were of the lower extremity (feet, knee, calf, thigh, shin, ankle, hip). Less than one-fourth of the injuries (23%) were of the trunk or upper body (shoulder, arm, back). The three most commonly reported injury sites were the foot (13.1%), knee (12.5%), and back (9.5%). The three most common types of injury reported were general inflammation (20.7%), muscle strain or sprains (19.6%), and stress fractures (16.8%). Two independent variables were significantly associated with rates of injuries: obligatory exercise scores (p = .0028), and reports of a past eating disorder (p = .0007). Group exercise instructors are at particular risk for injury to the lower body. Those instructors with exercise and eating-related disorders are especially prone to activity-related injuries.
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Factors Influencing Performance-Related Injuries among Group Exercise Instructors
Sharon H. Thompson, Alan J. Case, and Roger G. Sargent
Engaging Multiple Medical Epistemologies: Medical Professionals’ Distance Running Advice and Treatment
Jennifer L. Walton-Fisette and Theresa A. Walton-Fisette
: Office of Disease Prevention and Health Promotion . Retrieved from www.health.gov/paguidelines van Gent , R.N. , Siem , D. , van Middelkoop , M. , van Os , A.G. , Bierma-Zeinstra , S.M.A. , & Koe , B.W. ( 2007 ). Incidence and determinants of lower extremity running injuries in long
Greater Core Endurance Identifies Improved Mechanics During Jump Landing in Female Youth Soccer Athletes
Kate Pfile, Michelle Boling, Andrea Baellow, Emma Zuk, and Anh-Dung Nguyen
), as well as an increase in knee valgus angle ( Leppanen et al., 2017 ) as risk factors for ACL injury. Reduced lower extremity flexion results in reduced force absorption by the dynamic stabilizers, placing greater loads on the static stabilizers, specifically the ACL ( Alentorn-Geli et al., 2009
Recent Advances in Prevention of Primary and Secondary Anterior Cruciate Ligament Injury: What Does the Future Hold for Optimizing Knee-Joint Function?
Sandra J. Shultz and Randy J. Schmitz
both primary and second injury and to optimize joint function and health outcomes. ACL injury typically occurs during a sudden deceleration with change of direction (e.g., a land-and-cut maneuver). Lower-extremity motions observed at the time of injury are a relatively extended knee coupled with knee
Biomechanics: 40 Years On
Joseph Hamill, Kathleen M. Knutzen, and Timothy R. Derrick
runners with certain types of injuries ( Heiderscheit et al., 2002 ). A particular emphasis in these early studies was on pronation (calcaneal eversion) as a cause of many lower extremity injuries, including tibialis posterior tendinitis, Achilles tendinitis, patellofemoral disorder, iliotibial band
Effect of Core Muscle Training on Balance and Agility in Athletes: A Systematic Review
Saidan Shetty, Y.V. Raghava Neelapala, and Prateek Srivastava
the key stabilizers of the lumbopelvic region and the spine. Erector spinae, rectus abdominis, and external obliques control the trunk position in relation to the base of support. Transversus abdominis activation occurs initially during any lower extremity movements ( Cresswell & Thorstensson, 1994
Match Acceleration and Deceleration Patterns in Female Collegiate Soccer Players
Jessica L. Trapp, Alicja B. Stannard, Julie K. Nolan, and Matthew F. Moran
soccer match may prove to be consequential from a fatigue standpoint. Soccer-induced fatigue has been linked with decreased technical performance ( Rampinini et al., 2009 ) and altered lower-extremity neuromuscular control in female soccer players ( De Ste Croix et al., 2015 ). Although the recognition
The Evolution of Scholarship of Biomechanics and Motor Control Within the Academy: The Past, the Present, and the Future
Kolby J. Brink, Aaron Likens, and Nick Stergiou
dynamical systems approach to lower extremity running injuries ( Hamill et al., 1999 ; Vereijken et al., 1992 ). In Emmerik’s highly cited skill acquisition paper, he investigated Bernstein’s theory that early in the learning process of a movement skill, degrees of freedom are “frozen” and gradually
Season Phase Comparison of Training and Game Volume in Female High School Volleyball Athletes
Mario Muñoz and Jennifer A. Bunn
practical use of these two variables in volleyball. Lastly, this study showed that athletes tended to have a higher impact on jump landings as the season progressed. This metric should be monitored as it may inform an athlete’s risk of lower extremity injury. References Armstrong , R. ( 2005 ). Effects
2019 Women in Sport and Exercise Conference Abstracts
athlete and society, not only physically, but also psychologically and economically i.e. disability/financial cost. Various theories have attempted to explain this gender disparity in knee injury incidence. Both intrinsic and extrinsic factors play a role including lower extremity alignment, landing
