Discover the most talked about and latest scientific content & concepts.

Journal: Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine


: The authors hypothesized that variants within genes, such as COL5A1, COL3A1, COL6A1, and COL12A1, that code for connective tissue components of the musculoskeletal system may modulate susceptibility to exercise-associated muscle cramping (EAMC). Specifically, the aim of this study was to investigate if the COL5A1 rs12722 (C/T), COL3A1 rs1800255 (G/A), COL6A1 rs35796750 (T/C), and COL12A1 rs970547 (A/G) polymorphisms are associated with a history of EAMC.

Concepts: DNA, Bone, Blood, Collagen, Muscle, Tissues, Connective tissue, Ehlers-Danlos syndrome


To determine why athletes decide not to seek medical attention during a game or practice when they believe they have suffered a concussion.

Concepts: Concussion, Game


: Dietary supplements containing 1,3-dimethylamylamine (DMAA) have been determined to be illegal by the Food and Drug Administration (FDA); although banned, the products are still widely available for purchase. Adverse effects reported include cardiac arrest, hemorrhagic stroke, and death. Nonetheless, such products remain popular among young people because of advertised claims of exercise performance enhancement and fat burning. We describe a case of a young man who took such a supplement and suffered a cardiac arrest. Notably, the product consumed was not on the FDA list of substances containing DMAA. This case highlights the importance for clinicians to be aware of the potential harm of the DMAA-containing products by maintaining a high index of suspicion in otherwise healthy individuals presenting with cardiac arrest. It is of particular importance to sports medicine physicians who are most involved in education and counseling of patients potentially at risk of taking such products.

Concepts: Medicine, Nutrition, Obesity, Physical exercise, Dietary supplement, Diet, Potential, Food and Drug Administration



To evaluate the effectiveness of low-intensity pulsed ultrasound (LIPUS) for the improvement of lower limb bone stress injuries in a civilian population.

Concepts: Randomized controlled trial, Human leg, Civilian


: To characterize the epidemiology of injuries in post-high school male and female athletes in the rapidly growing international sport of contact flag football.

Concepts: Male, Female, American football


Commotio cordis, sudden death with chest impact, occurs clinically despite chest wall protectors worn in sports. In an experimental model of commotio cordis, commercially available chest wall protectors failed to prevent ventricular fibrillation (VF). The goal of the current investigation was to develop a chest wall protector effective in the prevention of commotio cordis.

Concepts: Cardiology, Heart, Cardiac arrest, Prevention, Ventricular fibrillation, Sudden cardiac death



This study aimed to compare the immediate analgesic effects of 2 resistance programs in in-season athletes with patellar tendinopathy (PT). Resistance training is noninvasive, a principle stimulus for corticospinal and neuromuscular adaptation, and may be analgesic.

Concepts: Epidemiology, Clinical trial, Effectiveness, Opioid, Pain, Pharmaceutical industry, Clinical research, Isometric exercise


Physical activity (PA) interventions to address noncommunicable disease (NCD) risk are commonly delivered in private practice and outpatient physiotherapy settings. This study reviewed the efficacy of physiotherapist-led physical activity (PLPA) interventions at improving PA levels.

Concepts: Randomized controlled trial, Efficacy, Review