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BACKGROUND: In distance running, pacing is characterized by changes in speed, leading to runners dropping off the leader\'s pace until a few remain to contest victory with a final sprint. Pacing behavior has been well studied over the last 30 years, but much remains unknown. It might be related to finishing position, finishing time, and dependent on critical speed (CS), a surrogate of physiologic capacity. We hypothesized a relationship between CS and the distance at which runners \"fell behind\" and \"let go\" from the leader or were \"outsprinted\" as contributors to performance.
METHODS: 100-m split times were obtained for athletes in the men\'s 10,000-m at the 2008 Olympics (N = 35). Split times were individually compared with the winner at the point of \"falling behind\" (successive split times progressively slower than the winner), \"letting go\" (large increase in time for distance compared with winner), or \"outsprinted\" (falling behind despite active acceleration) despite being with the leader with 400 m remaining.
RESULTS: Race times ranged between 26:55 and 29:23 (world record = 26:17). There were 3 groups who fell behind at ∼1000 (n = 11), ∼6000 (n = 16), and ∼9000 m (n = 2); let go at ∼4000 (n = 10), ∼7000 (n = 14), and ∼9500 m (n = 5); or were outkicked (n = 6). There was a moderate correlation between CS and finishing position (r = .82), individual mean pace (r = .79), \"fell behind\" distance (r = .77), and \"let go\" distance (r = .79). D\' balance was correlated with performance in the last 400 m (r = .87).
CONCLUSIONS: Athletes displayed distinct patterns of falling behind and letting go. CS serves as a moderate predictor of performance and final placing. Final placing during the sprint is related to preservation of D\' balance.

In the world of top-level sport, optimising athletic performance does not rely solely on physical training. Taking into account the intestine-brain axis offers new ways of optimising sports preparation, partly thanks to the role of the intestinal microbiota on performance and well-being.

BACKGROUND: Ethnic and gender differences in plasma lipid composition have been widely reported among the general population, but there are scarce data on athletes.
OBJECTIVE: To assess ethnic and gender differences in lipid profile across a large cohort of Olympic athletes practicing different sport disciplines METHODS: We enrolled 1165 Olympic athletes divided into power, endurance, and mixed disciplines according to European Society of Cardiology classification. Sixty-two (5.3%) were Afro-Caribbean. Body composition and fat mass percentage were measured. Blood samples were collected and lipid profile was investigated.
RESULTS: Compared to Caucasians, Afro-Caribbeans had better lipid profile characterized by lower LDL (90 ± 25 mg/dL vs. 97.1 ± 26.2 mg/dL, p = 0.032) lower LDL/HDL ratio (1.39 ± 0.5 vs. 1.58 ± 0.6, p = 0.012), lower non-HDL-cholesterol (102.5 ± 27.4 mg/dL vs. 111.5 ± 28.5 mg/dL, p = 0.015) and lower TC/HDL (2.59 ± 0.6 vs. 2.82 ± 0.7, p = 0.010). Female Afro-Caribbeans showed lower TG/HDL ratio (p = 0.045) and TC/HDL ratio (p = 0.028), due to higher HDL (p = 0.005) compared to male Afro-Caribbeans. In Caucasian athletes, females showed even more evident differences with lower TC, LDL, and higher HDL with subsequent lower ratios compared to men. Moreover, endurance Caucasian athletes had lower LDL (p = 0.003) and TG (p = 0.017) plasmatic levels and higher HDL levels compared to non-endurance Caucasian athletes (p< 0.0001) CONCLUSIONS: Ethnicity and gender have a significant influence on plasmatic lipid balance in elite athletes and Afro-Caribbeans have favorable lipid profiles compared to Caucasians. Moreover, endurance sports, particularly in Caucasian athletes, are associated with better lipid profile compared to other type of sports.

UNASSIGNED: The International Olympic Committee (IOC) Medical and Scientific Commission has supported collating and sharing evidence globally by developing sports medicine consensus statements (\'Statements\'\'). Publishing the Statements requires substantial resources that must be balanced by use and impact on policy and practice. This study aimed to gain a better understanding of awareness and uptake of the Statements globally through a survey of the National Olympic Committees (NOC), National Paralympic Committees (NPC) and International Federations (IF).
UNASSIGNED: A cross-sectional survey of medical commission representatives from NOCs/NPCs/IFs. A structured questionnaire was distributed through the IOC head office, informed by prior research. Questions comprised a mix of closed and open-text responses with results presented descriptively by organisation type and total.
UNASSIGNED: 55 responses were included: 29 (52%) from NOC/NPC representatives (response rate 14%) and 26 (47%) from IF representatives (response rate 63%). All Statements had been used by at least one respondent, with the Statement addressing concussion ranked highest (used by 33/55). The main barriers to use were financial limitations (n=21), club/sport culture and behaviours (n=19) and lack of understanding from coaches/team sport personnel (n=19). Participants believed the Statements were a successful strategy for improving athlete health (n=39/51 agree or strongly agree).
UNASSIGNED: There was clear support for the continued development of sports medicine guidance, including in the format of these Statements. To ensure Statements lead to demonstrable health benefits for athletes, input from athletes, coaches and supporting staff is needed, as well as clearer identification of the purpose and audience of each topic developed.

UNASSIGNED: To report epidemiological data regarding injury and illness among the Team USA staff during the Tokyo 2020 Summer Olympic and Paralympic Games and Beijing 2022 Winter Olympic and Paralympic Games.
UNASSIGNED: A retrospective review of all Team USA staff (total staff, N=1703 (62.5% female); total staff days (SD)=34 489) medical encounters during the Tokyo 2020 Games and Beijing 2022 Games was conducted. Details related to injury and illness were evaluated. Incidence with 95% CI per 1000 staff days were calculated.
UNASSIGNED: A total of 32 illnesses (incidence [95% CI] 0.9 [0.6, 1.2]) and 23 injuries (incidence 0.7 [0.4, 0.9]) were sustained by the Team USA delegation staff members during the Tokyo 2020 Games and Beijing 2022 Games. Female staff reported more illnesses (illnesses proportion (IP) 2.9%; incidence 1.4 [0.8, 2.0]), while male staff incurred more injuries (IP 1.8%; incidence 0.9 [0.5, 1.3]). When stratified by physiological system, dermatological and infectious were the most common systems involved with illness (IP 0.5%; incidence 0.2 [0.1, 0.4]). Injuries to the upper limb were most common (IP 0.3%; incidence 0.3 [0.1, 0.5]).
UNASSIGNED: Injury and illness rates among the Team USA staff during the Tokyo 2020 Games and Beijing 2022 Games were low, but notable. Knowledge of injury and illness risks contributes to staffing decisions and prevention strategies for staff supporting athletes during competition.

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Following the tragic events surrounding the war in Ukraine, which started on 24 February 2022, Russian troops have been destroying many Olympic sports infrastructures and athletes and Olympic sports professionals are suffering serious consequences, and sports talents are being lost. Therefore, this Delphi study aimed to identify the most important needs of Ukraine\'s Olympic sports in hostile conditions. It sought to formulate priority areas crucial for support during and after the war period, aimed at safeguarding the career prospects of Ukrainian athletes. The study further aimed to identify well-informed priorities for developing Ukraine\'s Olympic sports. These priorities, once discerned, can be advocated for promotion and prioritisation in present and future agendas, thereby shaping the course of international support and ensuring the preservation of Ukrainian athletes\' career prospects. A three-round Delphi study was conducted with 42 participants who had expertise as coaches, athletes and researchers (PhD, professor) in sports science. There was a strong panellist agreement on the needs of Ukraine\'s Olympic sports in the identified hostile conditions. The list of the final top 10 needs included: (1) \'Develop and maintain the athlete\'s fitness level\'; (2) \'Implementation of a better recovery system for athletes\'; and (3) \'To ensure a safe training place for athletes\'. The needs identified in this study are of tremendous value and guide efforts to Ukraine\'s sports talents during wartime and, as a result, will guide the international institutions to direct appropriate aid and international support.

There are various contributing factors to sporting success among elite athletes, including Olympians. The purpose of this paper was to investigate the enablers and/or barriers to sporting success among South African former Olympians from historically disadvantaged areas (HDAs) using the SPLISS framework. This would enable an understanding of the factors that lead to sporting success among athletes from HDAs. A qualitative research design was employed for this study, whereby semi-structured interviews were conducted among 15 former Olympians who represented South Africa between the 1992 and 2016 Olympic Games. The ATLAS.ti (version 22) software tool was used to analyse the data. The study found that athletes from HDAs attributed their sporting success to the functional competition structure, sports access at community level, access to scholarships and bursaries to elite schools/universities, good coaching support and mentorship, access to local and international competitions, as well as community and peer athlete support. The highest barriers reported by athletes were inadequate financial support, a dysfunctional school sport system, lack of sports facilities, equipment and transport system, poor post-career and scientific support. Elite athletes from HDAs need consistent financial support, school/foundation level sport access, quality sports facilities, equipment, and reliable transport to training and competitions, post-career, as well as scientific support to achieve their full potential and attain international sporting success.

UNASSIGNED: To describe the incidence of injuries and illnesses among paediatric Team USA athletes competing in the Tokyo 2020 Olympic and Paralympic Games, and the 2022 Beijing Olympic and Paralympic Games.
UNASSIGNED: An electronic medical record system documented all injuries and illnesses that occurred while competing in the four Games periods. Incidence (IR) with 95% CI per 1000 athlete days were calculated for both injuries and illnesses. Incidence rate ratios (IRR) were calculated to compare injury and illness rates based on age (paediatric vs non-paediatric) sex, Games period and sport type.
UNASSIGNED: Two hundred paediatric athletes (age range, 15-21 years) competed across the four Games periods, representing 16.1% of all Team USA athletes. The overall injury IR (95% CI) was 13.4 (9.8 to 18.1), and the overall illness IR was 5.5 (3.3 to 8.7). There were no differences in incidence between paediatric and non-paediatric athletes for either injury (IRR (95% CI): 0.9 (0.6 to 1.2)) or illness (IRR (95% CI): 0.9 (0.5 to 1.5)). Female paediatric athletes were more likely to sustain an injury compared with male paediatric athletes (IRR (95% CI): 2.4 (1.1 to 5.3)). The most common mechanism of injury was gradual onset (IR, 4.3 (2.3 to 7.2)), and injuries most commonly occurred during practices (IR, 7.0 (4.5 to 10.5)).
UNASSIGNED: Paediatric athletes account for a substantial proportion of Team USA athletes. It is essential that paediatric sports medicine experts are included in the medical team given that paediatric Team USA athletes are just as likely as their adult teammates to sustain an injury or illness.