In suspected SARS-CoV-2, rapid antigen detection tests had 67% to 73% sensitivity and 98% to 100% specificity.

SOURCE CITATION: Favresse J, Gillot C, Oliveira M, et al. Head-to-head comparison of rapid and automated antigen detection tests for the diagnosis of SARS-CoV-2 infection. J Clin Med. 2021;10:265. 33450853.

Preventing Exercise-Associated Collapse Using Online Runner Education: A Randomized, Controlled Trial.

OBJECTIVE: To determine whether online exercise-associated collapse (EAC) prevention education decreases medical tent EAC visits among first-time marathoners. DESIGN: A prospective controlled study, with age- and sex-stratified randomization, evaluated rates of medical tent diagnosed EAC among runners randomized to the intervention group and intervention participants, compared with a control group. SETTING: Grandma's Marathon Medical Tent in Duluth, MN, June 2016. PARTICIPANTS: Runners in the 2016 Grandma's Marathon who never previously ran a marathon (n = 2943), randomized into control (n = 1482) and intervention (n = 1461) groups. Intervention participants opened the EAC prevention video (n = 590). INTERVENTIONS: Online EAC education included an introductory webpage and 5-minute professional video describing EAC and prevention. MAIN OUTCOME MEASURES: Medical tent visit with EAC diagnosis. RESULTS: Intervention participants had no decreased likelihood of EAC, compared with controls [odds ratio (OR), 0.88, 95% confidence interval (CI), 0.46-1.69]. Exercise-associated collapse occurred less frequently in those with longer race times (OR, 0.58, 95% CI, 0.43-0.79). Intervention participation was associated with longer race times (OR, 1.12, 95% CI, 1.10-1.23). CONCLUSIONS: Those opening the EAC prevention video and controls had similar EAC rates. Slower running speed was associated with lower EAC rates. Video viewing was a predictor of slower running pace.

Risk Factor Reversal in Studies of Infectious Disease: Making Counterintuitive Results Intuitive Again.

A previously published study reported the seemingly paradoxical finding that men who have sex with men status was strongly protective and recent sexual abstinence strongly deleterious in relation to mortality prognosis. We explain why these results are entirely logical and that the counterintuitive direction of the effects derives from the comparison group implied by the study design.

Healthy Eating and Activity Across the Lifespan (HEAL): A call to action to integrate research, clinical practice, policy, and community resources to address weight-related health disparities.

Despite intense nationwide efforts to improve healthy eating and physical activity across the lifespan, progress has plateaued. Moreover, health inequities remain. Frameworks that integrate research, clinical practice, policy, and community resources to address weight-related behaviors are needed. Implementation and evaluation of integration efforts also remain a challenge. The purpose of this paper is to: (1) Describe the planning and development process of an integrator entity, HEAL (Healthy Eating and Activity across the Lifespan); (2) present outcomes of the HEAL development process including the HEAL vision, mission, and values statements; (3) define the planned integrator functions of HEAL; and (4) describe the ongoing evaluation of the integration process. HEAL team members used a theoretically-driven, evidence-based, systemic, twelve-month planning process to guide the development of HEAL and to lay the foundation for short- and long-term integration initiatives. Key development activities included a review of the literature and case studies, identifying guiding principles and infrastructure needs, conducting stakeholder/key informant interviews, and continuous capacity building among team members. Outcomes/deliverables of the first year of HEAL included a mission, vision, and values statements; definitions of integration and integrator functions and roles; a set of long-range plans; and an integration evaluation plan. Application of the HEAL integration model is currently underway through community solicited initiatives. Overall, HEAL aims to lead real world integrative work that coalesce across research, clinical practice, and policy with community resources to inspire a culture of health equity aimed at improving healthy eating and physical activity across the lifespan.

What Definition Is Used to Describe Second Impact Syndrome in Sports? A Systematic and Critical Review.

Concern about what has been termed, "second impact syndrome" (SIS) is a major factor determining return-to-play decisions after concussion. However, definitions of SIS vary. We used Scopus to conduct a systematic review and categorize the definitions used to describe SIS. Of the 91 sources identified, 79 (87%) clearly specified that SIS involved either cerebral edema or death after a concussion when a prior concussion had not resolved. Twelve articles (13%) could be interpreted as merely the events of two consecutive concussions. Among the articles that listed mortality rates, nearly all (33/35, 94%) said the rate of death was "high" (e.g., 50% to 100%). Our review found that most articles define SIS as a syndrome requiring catastrophic brain injury after consecutive concussive episodes. Given that it is unclear how common it is to have a second concussion while not fully recovered from a first concussion, the actual mortality rate of SIS is unknown.

Cardiac preparticipation screening for the young athlete: why the routine use of ECG is not necessary.

The addition of an electrocardiogram (ECG) to the current United States athlete preparticipation physical evaluation (PPE) as a screening tool has dominated the PPE discussion over the past decade despite the lack of demonstrable outcomes data supporting the routine use of the diagnostic study for reduction of sudden cardiac death (SCD). A good screening test should influence a disease or health outcome that has a significant impact on public health and the population screened must have a high prevalence of the disease to justify the screening intervention. While SCD is publicly remarkable and like any death, tragic, the prevalence of SCD in young athletes is very low and the potential for false positive results is high. While ECG screening appears to have made an impact on SCD in Italian athletes, the strategy has made no impact on Israeli athletes, and the overall impact of ECG screening on American athletes is unclear. Until outcomes studies show substantial SCD reduction benefit, the addition of routine ECG PPE screening in young athletes should not be instituted.

Identifying and Minimizing Incentives for Competing Interests in Sports Medicine Publications.

Academics in sports medicine as well as other medical fields are generally expected to publish research and opinions in peer-reviewed journals. The peer-review process is intended to protect against the publication of flawed research and unsubstantiated claims. However, both financial and non-financial competing interests may result in sub-optimal results by affecting investigators, editors, peer reviewers, academic institutions, and publishers. In this article, we focus on the non-financial competing interests created in our current academic system. Because these competing interests are embedded in our current scholastic framework, the potential biases are difficult to quantify. To minimize the effect of these competing interests, we review and highlight some underlying incentives for each stakeholder and some potential solutions to mitigate their effects.

Principles of musculoskeletal sport injuries for epidemiologists: a review.

BACKGROUND: Musculoskeletal injuries are a common occurrence in sport. The goal of sport injury epidemiology is to study these injuries at a population level to inform their prevention and treatment. MAIN BODY: This review provides an overview of musculoskeletal sport injuries and the musculoskeletal system from a biological and epidemiologic perspective, including injury mechanism, categorizations and types of sport injuries, healing, and subsequent injuries. It is meant to provide a concise introductory substantive background of musculoskeletal sport injuries for epidemiologists who may not have formal training in the underlying anatomy and pathophysiology. CONCLUSION: An understanding of sport injuries is important for researchers in sport injury epidemiology when determining how to best define and assess their research questions and measures.