Outracing champion Gran Turismo drivers with deep reinforcement learning.

Many potential applications of artificial intelligence involve making real-time decisions in physical systems while interacting with humans. Automobile racing represents an extreme example of these conditions; drivers must execute complex tactical manoeuvres to pass or block opponents while operating their vehicles at their traction limits1. Racing simulations, such as the PlayStation game Gran Turismo, faithfully reproduce the non-linear control challenges of real race cars while also encapsulating the complex multi-agent interactions. Here we describe how we trained agents for Gran Turismo that can compete with the world's best e-sports drivers. We combine state-of-the-art, model-free, deep reinforcement learning algorithms with mixed-scenario training to learn an integrated control policy that combines exceptional speed with impressive tactics. In addition, we construct a reward function that enables the agent to be competitive while adhering to racing's important, but under-specified, sportsmanship rules. We demonstrate the capabilities of our agent, Gran Turismo Sophy, by winning a head-to-head competition against four of the world's best Gran Turismo drivers. By describing how we trained championship-level racers, we demonstrate the possibilities and challenges of using these techniques to control complex dynamical systems in domains where agents must respect imprecisely defined human norms.

Sport activity in patients with cardiac implantable electronic devices: evidence and perspectives.

Demographic characteristics of patients with cardiac implantable electronic devices have significantly changed during the last few years, according to the ageing of the population and the consequent increase in the number of elderly individuals with indication for pacemaker implant and, on the other hand, to the increased number of young individuals implanted with an implantable cardioverter defibrillator for the primary prevention of sudden death. More and more often, both elderly and young patients ask the physician to deal with the device in their daily activities, which often include sport practice. This latter is advisable because of its recognized benefits on cardiovascular prevention, although there are many limitations for patients with a cardiac implantable electronic device. Hence, the need to balance the patient's request with the appropriate precautions emerging from existing evidence. The current article aims to provide an overview of the most recent data on this topic, derived from registries and observational studies. Over the years an attempt to standardize recommendations has been made, but robust evidence is still lacking. Substantial differences exist between countries based on their sports regulations. Official recommendations of European and American Scientific Societies are resumed. The future perspective is to obtain data to allow these patients a safer practice of sport activity also through technological advances in terms of device materials and programming improvement and the possibility of remote monitoring.

Sports participation and quality of life in individuals with visual impairment.

BACKGROUND: The positive effects of sports participation on health can be an important issue for rehabilitation of visually impaired individuals. AIMS: Our aim was to determine the relationship between sports participation and quality of life in individuals with visual impairment. METHODS: The study included 100 athletes who participated in national games for people with visual impairment and 100 subjects who did not participate in sports as the control group. The two groups were matched according to age, gender, visual acuity and visual field. The Short-Form Health Survey (SF-36) was applied for assessment of quality of life. RESULTS: All subjects had best corrected visual acuity less than 6/60 and/or visual field less than central 10 degrees in radius in the better eye. The sociodemographic characteristics of the study and control groups were similar except the level of education being higher in the athlete group and level of income higher in the control group. All of the SF-36 scores were higher among athletes compared to controls. Duration of sports activities (years) was positively correlated with Physical Functioning score. There were no significant relations between SF-36 scores and weekly sports participation time (hours). Athletes who had visual loss at an earlier age had better scores in Physical Functioning and Role Limitations due to Physical Problems. CONCLUSIONS: Sports activities had positive relationships with all domains of the quality of life in individuals with visual impairment. Thus, appropriate sports activities would increase the success of rehabilitation programs and their quality of life.

Return to sport for North American professional sport leagues in the context of COVID-19.

COVID-19 is a respiratory illness that can spread from person to person. A range of clinical scenarios exist, from an asymptomatic disease course to SARS and death. This document describes important considerations for 5 North American professional sports leagues (Major League Baseball, Major League Soccer, National Basketball Association, National Football League and National Hockey league) assessing when and how to resume phased operations, including practices and games. Sports should prioritise and promote the health and safety of athletes, team and operational staff, and other participants, and should not unduly increase those individuals' relative health risk while contributing to economic recovery, providing entertainment for the public and leading a responsible restoration of civic life. Because elite professional sport ordinarily is conducted in a controlled environment, professional sports leagues may be able to achieve these goals. This document is focused on professional sports leagues in North America, and although many of the statements are generalisable to professional sporting settings throughout the world, other considerations may apply to sports in other countries.

Benefits of Outdoor Sports in Blue Spaces. The Case of School Nautical Activities in Viana do Castelo.

Participating in outdoor sports in blue spaces is recognized to produce a range of significant social benefits. This case study empirically analyzes the social benefits associated with the School Nautical Activities project carried out in Viana do Castelo (Portugal) in school-age children and adolescents. It consisted of a 4 year program in which scholars took part in nautical activities (surfing, rowing, sailing, and canoeing) in blue spaces once a week during a semester as a part of their physical education course. The methods used for data collection were as follows: (1) a survey answered by 595 participants in the program and (2) five focus groups (FG): two FGs with participants (seven on each FG), two FGs with their parents (eight participants each), and one FG with the physical education teachers (five participants). Interviews were transcribed and qualitative analysis with NVivo software was developed. Results revealed clear evidence on the social benefits for school-age children and adolescents associated with participation in outdoor activities in blue spaces both in the overall health and in all the following analyzed categories: mental health and well-being, education, active citizenship, social behavior, and environmental awareness. More than 40% state that their overall health is much better now (13.4%) or somewhat better now (29.9%) due to their participation in the program. Thus, this article provides support for the anecdotal recognition of the benefits for school-age children and adolescents from participating in sports in the outdoors and especially in blue spaces.

Service Quality for Sports and Active Aging in Japanese Community Sports Clubs.

(1) Background: This study aims to examine the association between service quality for sports and active aging and the impacts on different age cohorts; (2) Methods: This cross-sectional study used a convenience sample of 545 Japanese community sports club (CSC) members over 60 years old, recruited from across eight CSCs in Japan between 2012-2013. A self-administered questionnaire was used to measure the self-reported health status of the elderly, evaluations to CSCs, demographic characteristics, and information on sports programs; (3) Results: The results of multiple logistic regression showed that domains of general evaluation for sports (OR = 1.942 and 95% CI 1.336~2.824), benefits of sports (OR = 1.659 and 95% CI 1.344~2.047), and management in sports (OR = 1.273 and 95% CI 1.011~1.603) were important for club members aged 60-64, the young-old, and the old-old, respectively. With a reduced model for elderly members, stratified analyses showed a significant impact of service quality for sports on active aged people in the benefits and management domains, regardless of sociodemographic information or club participation behavior; (4) Conclusions: The findings suggest that the services encountered in sports are key to promoting health in a community. Service quality in age segmentation should be considered to promote and manage active aging in the future.

Evidence-based Classification in Track Athletics for Athletes with a Vision Impairment: A Delphi Study.

SIGNIFICANCE: The Delphi analysis presented here highlights the need for a sport-specific evidence-based classification system for track athletics for athletes with a vision impairment (VI). This system may differ for different race distances. Further research is required to develop a useful test battery of vision tests for classification. The issue of intentional misrepresentation during classification needs particular attention. PURPOSE: At present, athletes with VI are placed into competition classes developed on the basis of legal definitions of VI. The International Paralympic Committee Athlete Classification Code states that all sports should have their own classification system designed to reflect the (visual) demands of that individual sport. This project gathered expert opinion on the specific requirements for an evidence-based sport-specific classification system for VI track athletics and to identify any particular issues within track athletics that require further research into their impact on sport performance. METHODS: A three-round Delphi review was conducted with a panel of 17 people with expertise in VI track athletics. RESULTS: The panel agreed that the current classification system in VI track athletics does not completely minimize the impact of impairment on competition outcome, highlighting the need for improvements. There was clear agreement that the existing measures of vision may fail to adequately reflect the type of vision loss that would impact running performance, with additional measures required. Intentional misrepresentation, where athletes "cheat" on classification tests, remains a serious concern. CONCLUSIONS: The panel has identified measures of vision and performance that will inform the development of an evidence-based classification system by better understanding the relationship between VI and performance in track athletics. Issues such as the use of guides and whether the current class system was equitable gave rise to differing opinions within the panel, with these varying across the different running distances.

Smoothbore weapons and ammunition in shooting sports.

The paper discusses the gauge ammunition used in shooting sports, dedicated for Olympic and non-Olympic shooting disciplines. The following disciplines are addressed: trap, skeet, parcour, shooting animal silhouette targets (stationary or moving) and western competition. Ammunition used in these disciplines, especially produced in Poland, is discussed as well.

The Biology of Sex and Sport.

Sex and gender are not the same. Sex is defined by the human genotype and pertains to biologic differences between males and females. Gender is a fluid concept molded by self-perception, social constructs, and culturally laden attitudes and expectations of men and women. In general, males have longer limb levers, stronger bones, greater muscle mass and strength, and greater aerobic capacity. Females exhibit less muscle fatigability and faster recovery during endurance exercise. Physiologic sex-based differences have led to an average performance gap of 10% that has remained stable since the 1980s. The performance disparity is lowest for swimming and highest for track and field events. The International Olympic Committee currently mandates that female athletes with differences of sex development, or intersex traits, and transgender female athletes must limit their blood testosterone to <10 nmol/L for 12 months to be eligible for competition in the female classification.

Active Player Detection in Handball Scenes Based on Activity Measures.

In team sports training scenes, it is common to have many players on the court, each with his own ball performing different actions. Our goal is to detect all players in the handball court and determine the most active player who performs the given handball technique. This is a very challenging task, for which, apart from an accurate object detector, which is able to deal with complex cluttered scenes, additional information is needed to determine the active player. We propose an active player detection method that combines the Yolo object detector, activity measures, and tracking methods to detect and track active players in time. Different ways of computing player activity were considered and three activity measures are proposed based on optical flow, spatiotemporal interest points, and convolutional neural networks. For tracking, we consider the use of the Hungarian assignment algorithm and the more complex Deep SORT tracker that uses additional visual appearance features to assist the assignment process. We have proposed the evaluation measure to evaluate the performance of the proposed active player detection method. The method is successfully tested on a custom handball video dataset that was acquired in the wild and on basketball video sequences. The results are commented on and some of the typical cases and issues are shown.

Associations of Physical Activity Policies With Sports Participation in EU Countries: Higher Overall Levels, Smaller Social Inequalities, and More Positive Trends Since 2009.

BACKGROUND: European Union member countries agreed on 23 health-enhancing physical activity (HEPA) policy measures in 2013; however, the implementation of these measures varies considerably between countries. Hitherto, no evaluations have yet addressed the efficacy of these policies. METHODS: Using a quantitative cross-country comparative approach and based on aggregate Eurobarometer data, this paper presents country-level associations between HEPA measures and the level of sports participation, the gender and educational inequalities of sports participation, and the change in sports participation from 2009 to 2017. FINDINGS: The number of implemented HEPA policy measures is associated with higher levels and smaller social inequalities of sports participation in European Union countries. Moreover, HEPA measures correlate with more positive time trends in sports participation from 2009 to 2017. CONCLUSION: In addition to the many influencing factors at the individual and social levels, these findings lend support to the notion that sports participation can also be promoted at the national level by implementing specific HEPA policies.

Establishing a Global Standard for Wearable Devices in Sport and Fitness: Perspectives from the New England Chapter of the American College of Sports Medicine Members.

The recent explosion of wearable technology and the associated concerns prompted the International Federation of Sports Medicine (FIMS) to create a quality assurance standard for wearable devices, which provides commissioned testing of marketing claims and endorsement of commercial wearables that test favorably. An open forum as announced in the conference advertising was held at the Annual Meeting of the New England Regional Chapter of the American College of Sports Medicine (NEACSM) November 7 to 8, 2019, in Providence, Rhode Island, USA for attending NEACSM members to voice their input on the process. Herein, we report the proceedings. The round table participants perceived the quality assurance standard to be important, but identified some practical process challenges that included the broad scope and complexity of the device universe, the need for a multiphase testing pathway, and the associated fees for product evaluation. The participants also supported the evaluation of device data analysis, behavioral influences, and user experience in the overall evaluation. Looking forward, the FIMS quality assurance standard faces the challenge of balancing these broader perspectives with practical constraints of budget, facilities, time, and human resources.

Validation and Adaptation of the Prosocial and Antisocial Behavior in Sport Scale to the Spanish context of Physical Education.

Physical education (PE), by its own characteristics, is a subject where social communication is especially promoted. However, it is necessary to have tools that evaluate the social behaviour of students during PE classes. For this reason, we propose to validate and adapt the Prosocial and Antisocial Behavior in Sport Scale to the Spanish context of PE classes. The study involved 1081 students aged 12 to 18 (M = 14.83; SD = 1.27). The psychometric properties of the Prosocial Behavior Scale were analyzed through several statistical analyses. The results of the confirmatory factorial analysis and the exploratory factorial analysis supported the internal structure of the questionnaire. In addition, the scale was invariant to gender. Cronbach's alpha values were higher than 0.70 in the factors and sub-factors, finally showing adequate levels of temporal stability. Taking into account the results achieved in the present study, PE teachers have an effective tool to assess the social and antisocial behaviour of their students' students during PE classes.

Potential Risk of Higenamine Misuse in Sports: Evaluation of Lotus Plumule Extract Products and a Human Study.

Since 2017, higenamine has been added to the World Anti-Doping Agency (WADA) prohibited list as a ß2-agonist prohibited at all times for sportspersons. According to WADA's report, positive cases of higenamine misuse have been increasing yearly. However, higenamine occurs naturally in the Chinese herb lotus plumule-the green embryo of lotus (Nelumbo nucifera Gaertn) seeds-commercially available as concentrated powder on the Asian market. This study evaluated the major phytochemical components of lotus plumule products using an appropriate extraction method, followed by a human study in which the products were orally administered in multiple doses to investigate the risk of doping violations. Comparing various extraction methods revealed that optimized microwave-assisted extraction exhibited the highest extraction efficiency (extraction time, 26 min; power, 1046 W; and temperature, 120 °C). Subsequently, the alkaloids in lotus plumule products were quantitatively confirmed and compared. Human study participants (n = 6) consumed 0.8 g of lotus plumule (equivalent to 679.6 µg of higenamine) three times daily for three consecutive days. All participants' urinary higenamine concentrations exceeded the WADA reporting cut-off of 10.0 ng/mL. Accordingly, lotus plumule consumption may engender adverse analytical findings regarding higenamine. Athletes should avoid consuming lotus plumule-containing products during in- and out-of-competition periods.

Emergency Action Plans in Secondary Schools: Barriers, Facilitators, and Social Determinants Affecting Implementation.

CONTEXT: Secondary schools (SSs) inconsistently adopt emergency action plans (EAPs) for athletics. OBJECTIVE: To describe the barriers, facilitators, and social determinants influencing EAP adoption in SSs in the United States. DESIGN: Cross-sectional study. SETTING: Secondary schools. PATIENTS OR OTHER PARTICIPANTS: A national sample of athletic trainers (ATs; n = 9642) and athletic directors (ADs; n = 9687) were invited to participate in a Web-based questionnaire. A total of 1273 (13.2%) ATs and 702 (9.2%) ADs responded to the survey. MAIN OUTCOME MEASURE(S): The questionnaire addressed self-reported barriers to, facilitators of, and social determinants (eg, locale, funding classification [eg, public or private SS]) of EAP adoption. The responses of ATs and ADs were analyzed separately. Barriers, facilitators, and social determinants were evaluated using descriptive statistics. Contingency (2 × 2) tables were used to calculate the odds ratios (ORs) of adopting an EAP and the presence of each social determinant. RESULTS: Perceived barriers to implementation were a lack of knowledge about how to implement an EAP and financial limitations. Facilitators were having access to health care personnel, state mandates, and support from a person in an authoritative position. Compared with ATs at rural schools, ATs at suburban schools displayed greater odds of having an EAP (χ2 = 5.63, P = .01, OR = 1.63 [95% confidence interval = 1.08, 2.44]). According to the ADs' responses, a larger SS enrollment (≥500) led to greater odds of adopting an EAP (OR = 2.02 [95% confidence interval = 1.41, 2.89]). CONCLUSIONS: Perceived barriers to EAP adoption suggest that ATs and ADs need to be educated so they can provide additional information on the low cost of EAP adoption. Further, ADs described state mandates as facilitators to improve EAP adoption; therefore, efforts to educate state leaders about the need for mandated policies may be warranted. Certain social determinants (eg, school enrollment) may affect EAP adoption, but not every proposed determinant significantly affected adoption.