scholarly journals Portuguese Football Federation consensus statement 2020: nutrition and performance in football

2021 ◽  
Vol 7 (3) ◽  
pp. e001082
Author(s):  
Rodrigo Abreu ◽  
Pedro Figueiredo ◽  
Paulo Beckert ◽  
José P Marques ◽  
Samuel Amorim ◽  
...  
Keyword(s):  
Sports Medicine ◽  
Scientific Evidence ◽  
Soccer Players ◽  
Football Players ◽  
Sports Science ◽  
Physiological Demands ◽  
And Performance ◽  
Nutritional Strategies ◽  
Practical Constraints ◽  
Practical Recommendations

Nutrition is an undeniable part of promoting health and performance among football (soccer) players. Nevertheless, nutritional strategies adopted in elite football can vary significantly depending on culture, habit and practical constraints and might not always be supported by scientific evidence. Therefore, a group of 28 Portuguese experts on sports nutrition, sports science and sports medicine sought to discuss current practices in the elite football landscape and review the existing evidence on nutritional strategies to be applied when supporting football players. Starting from understanding football’s physical and physiological demands, five different moments were identified: preparing to play, match-day, recovery after matches, between matches and during injury or rehabilitation periods. When applicable, specificities of nutritional support to young athletes and female players were also addressed. The result is a set of practical recommendations that gathered consensus among involved experts, highlighting carbohydrates periodisation, hydration and conscious use of dietary supplements.

scholarly journals The Assessment of Airway Maneuvers and Interventions in University Canadian Football, Ice Hockey, and Soccer Players

2011 ◽  
Vol 46 (2) ◽  
pp. 117-125 ◽  
Author(s):  
J. Scott Delaney ◽  
Ammar Al-Kashmiri ◽  
Penny-Jane Baylis ◽  
Tracy Troutman ◽  
Mahmood Aljufaili ◽  
...  
Keyword(s):  
Sports Medicine ◽  
Rating Scale ◽  
Ice Hockey ◽  
Soccer Players ◽  
Football Players ◽  
Protective Equipment ◽  
Point Rating Scale ◽  
Varsity Athletes ◽  
Ventilation Technique ◽  
Difficult Ventilation

Abstract Context: Managing an airway in an unconscious athlete is a lifesaving skill that may be made more difficult by the recent changes in protective equipment. Different airway maneuvers and techniques may be required to help ventilate an unconscious athlete who is wearing full protective equipment. Objective: To assess the effectiveness of different airway maneuvers with football, ice hockey, and soccer players wearing full protective equipment. Design: Crossover study. Setting: University sports medicine clinic. Patients or Other Participants: A total of 146 university varsity athletes, consisting of 62 football, 45 ice hockey, and 39 soccer players. Intervention(s): Athletes were assessed for different airway and physical characteristics. Three investigators then evaluated the effectiveness of different bag-valve-mask (BVM) ventilation techniques in supine athletes who were wearing protective equipment while inline cervical spine immobilization was maintained. Main Outcome Measure(s): The effectiveness of 1-person BVM ventilation (1-BVM), 2-person BVM ventilation (2-BVM), and inline immobilization and ventilation (IIV) was judged by each investigator for each athlete using a 4-point rating scale. Results: All forms of ventilation were least difficult in soccer players and most difficult in football players. When compared with 1-BVM, both 2-BVM and IIV were deemed more effective by all investigators for all athletes. Interference from the helmet and stabilizer were common reasons for difficult ventilation in football and ice hockey players. Conclusions: Sports medicine professionals should practice and be comfortable with different ventilation techniques for athletes wearing full equipment. The use of a new ventilation technique, termed inline immobilization and ventilation, may be beneficial, especially when the number of responders is limited.

A Systematic Review of CrossFit® Workouts and Dietary and Supplementation Interventions to Guide Nutritional Strategies and Future Research in CrossFit®

2020 ◽  
pp. 1-19
Author(s):  
Ricardo Augusto Silva de Souza ◽  
André Guedes da Silva ◽  
Magda Ferreira de Souza ◽  
Liliana Kataryne Ferreira Souza ◽  
Hamilton Roschel ◽  
...  
Keyword(s):  
Systematic Review ◽  
Muscle Fatigue ◽  
High Intensity ◽  
Scientific Evidence ◽  
Metabolic Stress ◽  
Optimal Recovery ◽  
Future Research ◽  
Nutritional Recommendations ◽  
And Performance ◽  
Nutritional Strategies

CrossFit® is a high-intensity functional training method consisting of daily workouts called “workouts of the day.” No nutritional recommendations exist for CrossFit® that are supported by scientific evidence regarding the energetic demands of this type of activity or dietary and supplement interventions. This systematic review performed in accordance with PRISMA guidelines aimed to identify studies that determined (a) the physiological and metabolic demands of CrossFit® and (b) the effects of nutritional strategies on CrossFit® performance to guide nutritional recommendations for optimal recovery, adaptations, and performance for CrossFit® athletes and direct future research in this emerging area. Three databases were searched for studies that investigated physiological responses to CrossFit® and dietary or supplementation interventions on CrossFit® performance. Various physiological measures revealed the intense nature of all CrossFit® workouts of the day, reflected in substantial muscle fatigue and damage. Dietary and supplementation studies provided an unclear insight into effective strategies to improve performance and enhance adaptations and recovery due to methodological shortcomings across studies. This systematic review showed that CrossFit® is a high-intensity sport with fairly homogenous anaerobic and aerobic characteristics, resulting in substantial metabolic stress, leading to metabolite accumulation (e.g., lactate and hydrogen ions) and increased markers of muscle damage and muscle fatigue. Limited interventional data exist on dietary and supplementation strategies to optimize CrossFit® performance, and most are moderate to very low quality with some critical methodological limitations, precluding solid conclusions on their efficacy. High-quality work is needed to confirm the ideal dietary and supplemental strategies for optimal performance and recovery for CrossFit® athletes and is an exciting avenue for further research.

Weight Loss in Adolescent Wrestlers

1994 ◽  
Vol 6 (3) ◽  
pp. 211-224 ◽  
Author(s):  
Heidi L. Keller ◽  
Stephen E. Tolly ◽  
Patty S. Freedson
Keyword(s):  
Weight Loss ◽  
Health Professionals ◽  
Sports Medicine ◽  
Normal Weight ◽  
Rapid Weight Loss ◽  
Weight Class ◽  
Weight Cycling ◽  
Performance Consequences ◽  
And Performance ◽  
Practical Recommendations

The sport of wrestling often encourages participants to engage in extreme weight loss practices in order to compete in a weight class one to three weight categories below normal weight. This review discusses the prevalence of the problem, methods wrestlers use to accomplish weight loss, and the health and performance consequences of rapid weight loss, with particular emphasis on weight cycling and minimal safe wrestling weight assessment. Some useful and practical recommendations for minimizing extreme weight loss practices are presented. Several state wrestling associations have adjusted their rules and regulations based on recommendations by organizations such as the American College of Sports Medicine to reduce the prevalence of the problem. Nevertheless, extreme weight loss continues to be a concern among health professionals, particularly with regard to health and performance.

scholarly journals Skill not athleticism predicts individual variation in match performance of soccer players

2017 ◽  
Vol 284 (1868) ◽  
pp. 20170953 ◽  
Author(s):  
Robbie S. Wilson ◽  
Gwendolyn K. David ◽  
Sean C. Murphy ◽  
Michael J. Angilletta ◽  
Amanda C. Niehaus ◽  
...  
Keyword(s):  
Evolutionary Biology ◽  
Simple Game ◽  
Team Sports ◽  
Modern Society ◽  
Soccer Players ◽  
Sporting Events ◽  
Complex Activity ◽  
Sports Science ◽  
Athletic Ability ◽  
And Performance

Just as evolutionary biologists endeavour to link phenotypes to fitness, sport scientists try to identify traits that determine athlete success. Both disciplines would benefit from collaboration, and to illustrate this, we used an analytical approach common to evolutionary biology to isolate the phenotypes that promote success in soccer, a complex activity of humans played in nearly every modern society. Using path analysis, we quantified the relationships among morphology, balance, skill, athleticism and performance of soccer players. We focused on performance in two complex motor activities: a simple game of soccer tennis (1 on 1), and a standard soccer match (11 on 11). In both contests, players with greater skill and balance were more likely to perform better. However, maximal athletic ability was not associated with success in a game. A social network analysis revealed that skill also predicted movement. The relationships between phenotypes and success during individual and team sports have potential implications for how selection acts on these phenotypes, in humans and other species, and thus should ultimately interest evolutionary biologists. Hence, we propose a field of evolutionary sports science that lies at the nexus of evolutionary biology and sports science. This would allow biologists to take advantage of the staggering quantity of data on performance in sporting events to answer evolutionary questions that are more difficult to answer for other species. In return, sports scientists could benefit from the theoretical framework developed to study natural selection in non-human species.

scholarly journals Soccer Post-Match Recovery – a Review of the Evidence on Static Stretching

2018 ◽  
Author(s):  
Ryan Sciacchitano
Keyword(s):  
Muscle Soreness ◽  
Scientific Evidence ◽  
Technical Skills ◽  
The Body ◽  
Soccer Players ◽  
Static Stretching ◽  
Delayed Onset ◽  
Recovery Strategies ◽  
And Performance ◽  
High Level

Soccer is the most played sport worldwide, with over 265 million participants. It is an incredibly demanding sport, with many different technical skills and physical loads placed on the body. This makes post-match recovery strategies amongst high level soccer players of great importance. The aim of this review is to summarize the existing literature on stretching for post-match recovery, examining its relation to injury prevention, Delayed Onset Muscle Soreness (DOMS), and performance. Scientific evidence of the highest quality and relevance was extracted and reviewed. Despite its common practice, evidence does not support static stretching as a modality to improve recovery post-match amongst soccer players. Larger trials with important outcome measures are needed to determine if a post-match stretching regimen to facilitate recovery exists.

History of Sport, Exercise, and Performance Psychology in Australia

2018 ◽  
Author(s):  
Jeffrey Bond ◽  
Tony Morris
Keyword(s):  
Sport Psychology ◽  
Sports Medicine ◽  
Performance Enhancement ◽  
Tertiary Institutions ◽  
Performance Psychology ◽  
Sports Science ◽  
Sports Programs ◽  
Conference Presentations ◽  
History Of ◽  
And Performance

Australian sport psychology was effectively “launched” in conjunction with the establishment of the Australian Institute of Sport (AIS) in 1981. Prior to this date, sport psychology sat within the realm of a small number of research academics in tertiary institutions and many more unqualified practitioners with backgrounds in sport, hypnotherapy, medicine, and marketing and sales. The commencement of the legitimacy of the profession in the early 1980s correlated with the co-location of the AIS Sport Psychology Department with other sports medicine and sports science disciplines. From this rather humble but significant beginning, Australian sport psychology quickly became integrated into the training and competition plans of the vast majority of Australian Olympic sports and the developing professional football, tennis, golf, and cricket codes. The rapid growth of the AIS and its team of qualified and experienced sport psychology practitioners, combined with international competition exposure, international conference presentations, reciprocal visits to international sports institutes, and Olympic training centers culminated in the inclusion of sport psychology within the auspices of the Australian Psychological Society (APS) and the accreditation of undergraduate and postgraduate tertiary programs in Australian universities. Applied sport psychology services are now a regular inclusion in most, if not all, Australian sports programs. An increasing emphasis on athlete and coach mental health in conjunction with the performance enhancement capability associated with sport psychology support has firmly entrenched the profession within the Australian sporting milieu.

Female Olympians’ voices: Female sports categories and International Olympic Committee Transgender guidelines

2021 ◽  
pp. 101269022110215
Author(s):  
Cathy Devine
Keyword(s):  
Female Athletes ◽  
Scientific Evidence ◽  
Policy Formulation ◽  
International Olympic Committee ◽  
Political Discourses ◽  
Fair Competition ◽  
Fair Inclusion ◽  
Female Sports ◽  
And Performance ◽  
Unanimous Agreement

The fair inclusion of female athletes at elite and Olympic levels is secured in most sports by way of female categories because of the extensively documented biological and performance-related differences between the sexes. International policy for transgender inclusion is framed by the definitive International Olympic Committee transgender guidelines in which the International Olympic Committee confirms the ‘overriding sporting objective is and remains the guarantee of fair competition’ and transwomen can be excluded from female categories if, in the interests of fairness, this is necessary and proportionate. Feminist theorists argue justice requires that women have equal moral standing in the sociocultural–political structures of society including sport. As such their voices should carry equal democratic weight. However, female elite and Olympic athletes are rarely heard in the sociocultural–political discourses of academic literature or policy formulation for transgender inclusion in female categories by the International Olympic Committee and governing bodies of sport. This empirical study investigated the views and presents the ‘voices’ of 19 female Olympians. The main findings include (1) these athletes thought both female and transgender athletes should be fairly included in elite sport, (2) unanimous agreement there is not enough scientific evidence to show no competitive advantage for transwomen, (3) unanimous agreement that the International Olympic Committee should revisit the rules and scientific evidence for transgender inclusion in female categories, and (4) the majority of athletes felt that they could not ask questions or discuss this issue without being accused of transphobia.

scholarly journals Wearable Technologies in Field Hockey Competitions: A Scoping Review

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5242
Author(s):  
Jolene Ziyuan Lim ◽  
Alexiaa Sim ◽  
Pui Wah Kong
Keyword(s):  
Heart Rate ◽  
Inertial Sensors ◽  
Wearable Devices ◽  
Field Hockey ◽  
Heart Rate Monitors ◽  
Search Terms ◽  
Physiological Demands ◽  
And Performance ◽  
Future Work ◽  
Skin Temperatures

The aim of this review is to investigate the common wearable devices currently used in field hockey competitions, and to understand the hockey-specific parameters these devices measure. A systematic search was conducted by using three electronic databases and search terms that included field hockey, wearables, accelerometers, inertial sensors, global positioning system (GPS), heart rate monitors, load, performance analysis, player activity profiles, and competitions from the earliest record. The review included 39 studies that used wearable devices during competitions. GPS units were found to be the most common wearable in elite field hockey competitions, followed by heart rate monitors. Wearables in field hockey are mostly used to measure player activity profiles and physiological demands. Inconsistencies in sampling rates and performance bands make comparisons between studies challenging. Nonetheless, this review demonstrated that wearable devices are being used for various applications in field hockey. Researchers, engineers, coaches, and sport scientists can consider using GPS units of higher sampling rates, as well as including additional variables such as skin temperatures and injury associations, to provide a more thorough evaluation of players’ physical and physiological performances. Future work should include goalkeepers and non-elite players who are less studied in the current literature.

Physical and performance characteristics related to starter status, position, and division in Japanese collegiate American-football players

2021 ◽  
pp. 1-8
Author(s):  
Junta Iguchi ◽  
Minoru Matsunami ◽  
Tatsuya Hojo ◽  
Yoshihiko Fujisawa ◽  
Kenji Kuzuhara ◽  
...  
Keyword(s):  
Performance Test ◽  
Vertical Jump ◽  
American Football ◽  
Football Players ◽  
Jump Height ◽  
Test Results ◽  
Repetition Maximum ◽  
Vertical Jump Height ◽  
Division 1 ◽  
And Performance

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.

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