Revista de Medicina Desportiva Julho 2020 - Page 26

Rev. Medicina Desportiva informa, 2020; 11(4):24 Association of longitudinal patterns of habitual sleep duration with risk of cardiovascular events and all- -cause mortality Yun-HeWang, JingWang, Shuo-Hua Chen, et al. JAMA Network Open. 2020;3(5):e205246. doi:10.1001/ jamanetworkopen.2020.5246 (22maio2020) Question: Are longitudinal patterns of habitual sleep duration associated with subsequent risk of cardiovascular events and all-cause mortality? Findings: In this cohort study that included 52 599 participants, 4 distinct sleep duration trajectories reported during a 4-year interval were identified. Compared with a stable sleep duration of 7.0 to 8.0 hours per night, normal decreasing and low-increasing patterns were associated with increased risk of first cardiovascular events and all-cause mortality, respectively; individuals reporting consistently sleeping less than 5.0 hours per night had the highest risk. Meaning: This study suggests that sleep duration trajectories with lower or unstable patterns may be associated with increased risk of subsequent first cardiovascular events and all-cause mortality. radiographic knee osteoarthritis. Persistent extensive sitting was not associated with either elevated or reduced risk. Meaning: These findings suggest that older adults at high risk for knee osteoarthritis may safely engage in strenuous physical activities at a moderate level to improve their general health. Association of Professional Football Cumulative Head Impact Index Scores with All-Cause Mortality Among National Football League Players. Brittany L. Kmush et al. JAMA Network Open. 2020;3(5):e204442. Question: Are repetitive head impacts during a professional football career associated with mortality among National Football League players? Findings: In this cohort study of 13 912 National Football League players, a 25% increase in repetitive head impacts during a professional football career was associated with a statistically significant increase in the hazard ratio of death. Meaning: The findings suggest that repetitive head impacts are associated with an increase in the risk of all-cause mortality among professional football players. Dose-Response Association of Low- -Intensity and Nondaily Smoking with Mortality in the United States Maki Inoue-Choi et al. 2020;3(6):e206436. Question: What is the association of reducing from daily to nondaily cigarette smoking with mortality risks? Findings: In a prospective cohort study of 505 500 nationally representative US adults, daily smokers had 2.32 times higher mortality risk, and lifelong nondaily smokers had 1.82 times higher mortality risk, than never smokers; significant associations were observed for 6 to 10 cigarettes per month and increased with higher-intensity use. Risks decreased when smokers reduced from daily to nondaily smoking, yet the benefits of cessation were far larger. Meaning: Nondaily smokers have substantially higher mortality risks than never smokers, even if they smoke just a few cigarettes per month. Association of long-term strenuous physical activity and extensive sitting with incident radiographic knee osteoarthritis Alison H. Chang, Jungwha (Julia) Lee et al. JAMA Network Open. 2020;3(5):e204049. doi:10.1001/ jamanetworkopen.2020.4049 (04maio2020) Question: Are long-term strenuous physical activity and extensive sitting each associated with risk for developing radiographic knee osteoarthritis in individuals at high risk for the disease? Findings: In this cohort study of 1194 persons at high risk for but without radiographic evidence of knee osteoarthritis who were followed up for up to 10 years, long-term participation in strenuous physical activities was not associated with risk of incident hsTn – troponina I de elevada sensibilidade; a) teste típico realizado com zaragatoa nasofaríngea. Todos os atletas com teste positivo devem ficar isolados durante duas semanas independentemente dos sintomas; b) se houver sintomas clínicos e/ou cardíacos seguir a via clínica indicada; c) devido à falta de patofisiologia clara, recomendam-se as orientações de American College of Cardiology/American Heart Association sobre a miocardite. Ref. Dermot Phelan, Jonathan H. Kim, Eugene H. Chung. A Game Plan for the Resumption of Sport and Exercise After Coronavirus Disease 2019 (COVID-19) Infection. JAMA Cardiol. Maio 2020. doi:10.1001/jamacardio.2020.2136 24 julho 2020 www.revdesportiva.pt