Empirical observations support that the addition of a plastic strip - also known as Randall foils - on the top edge of a rowing blade improves rowing efficiency during the cycle propulsive phase. The ...aim of the current study was to analyze the effect of using big blades with and without Randall foils on rowing performance. Twenty experienced rowers performed two 90 s tethered rowing bouts (with and without Randall foils) to assess their impact on force production and physiologic variables. All tests were randomized and a repeated measure design was used to compare experimental conditions. Higher values of peak and mean peak forces (479.4±134.7 vs. 423.2±153.0,
=0.83 and 376.5±101.4 vs. 337.1±113.3 N,
=0.68), peak oxygen uptake (47.9±7.5 vs. 45.3±7.3 mL∙kg
∙min
,
=0.19), peak blood lactate concentration (7.9±1.6 vs. 6.9±1.7 mmol∙L
,
=0.16), blood lactate increasing speed (0.08±0.01 vs. 0.07±0.06 (mmol·L
)·s
,
=0.27) and lactic anaerobic energy (27.4±7.9 vs. 23.4±8.1 kJ,
=0.23) were found for big blades with vs. without Randall foils, p<0.05. The current data suggest that the Randall foils can positively affect rowing performance.
Abstract Sustainability and nature preservation are part of the surfer’s lifestyle and could influence the new generations as a way to reverse the actual climate and environmental crisis that the ...planet is going through. The World Surf League (WSL), attentive to the wishes of its community, has been working on communication strategies to spread good intentions and sustainable initiatives as a way of leading a movement in defense of the seas and its desired waves. This manuscript intends to do case studies and a literature review to understand this movement. Above all, it is an example to other organizations and a way of spreading the positive messages that surfing can deliver to the contemporary world, thus playing an essential role in planetary peace and sustainability. Keywords: Water Sports. Surfing. Lifestyle. Sustainability. Atividades físicas, esportes e sustentabilidade: uma reflexão sobre o papel da liga mundial do surfe Resumo Sustentabilidade e preservação da natureza fazem parte do estilo de vida do surfista e podem influenciar as novas gerações de forma a reverter a atual crise climática e ambiental pela qual passa o planeta. A World Surf League (WSL), atenta aos desejos de sua comunidade, vem trabalhando em estratégias de comunicação para difundir boas intenções e iniciativas sustentáveis, como forma de liderar um movimento em defesa dos mares e de suas desejadas ondas. Este manuscrito pretende fazer estudos de caso e uma revisão de literatura para entender esse movimento. Acima de tudo, é um exemplo para outras organizações e uma maneira de espalhar as mensagens positivas que o surf pode transmitir ao mundo contemporâneo, desempenhando, assim, um papel essencial na paz e sustentabilidade planetárias. Palavras-chave: Esportes Aquáticos. Surf. Estilo de vida. Sustentabilidade. Actividades físicas, deporte y sostenibilidad: una reflexión sobre el papel de la liga mundial de surf Resumen La sostenibilidad y la preservación de la naturaleza son parte del estilo de vida del surfista y podrían influir en las nuevas generaciones como una forma de revertir la crisis climática y ambiental que atraviesa el planeta. La World Surf League (WSL), atenta a los deseos de su comunidad, ha estado trabajando en estrategias de comunicación para difundir buenas intenciones e iniciativas sostenibles como una forma de liderar un movimiento en defensa de los mares y sus olas deseadas. Este manuscrito tiene la intención de hacer estudios de casos y una revisión de la literatura para comprender este movimiento. Sobre todo, es un ejemplo para otras organizaciones y una forma de difundir los mensajes positivos que el surf puede entregar al mundo contemporáneo, desempeñando así un papel esencial en la paz y la sostenibilidad planetarias. Palabras clave: Deportes Acuáticos. Surf. Estilo de vida. Sostenibilidad.
Surfing is an increasingly popular recreational sport in Portugal. Although surfing-related injuries have short-term and long-term impact, little is known about their prevalence. Our purpose is to ...determine the lifetime prevalence of surfing-related injuries in the Portuguese surfing teachers (ST) population.
This is a cross-sectional study of the Portuguese ST population. An online survey was distributed through all surfing schools registered at Portuguese Surf Federation to their teachers. The survey included a brief demographic characterization and questions regarding past surf injuries.
102 teachers answered the survey. Most ST were male (94,1%), with a median age of 37 years old (range 20–52) and a median surfing practice experience of 22 years (range 1–40). The most frequent injuries were musculoskeletal (58.2%) and skin and soft tissue conditions (58.2%). 46.8% reported previous history of external ear exostosis, and 17.7% pterygium. Concussion, vertebral trauma, and drowning were rare. We found no association between types of surfing modalities and previous history of surf-related injuries (p > 0.05).
To our knowledge, this is the first research on injuries of Portuguese ST. ST constitute an experienced surfing population, which makes them a good sample to get a diverse history of past injuries. Thus, getting a broader perspective on acute and long-term injuries that surfers can suffer while practicing the sport.
Portuguese ST have a high rate of traumatic injuries, which point to the need for a systematic approach to injury prevention and water safety education in the surfing community.
Surfen ist ein zunehmend beliebter Sport in Portugal. Obwohl surfbedingte Verletzungen kurz- und langfristige Auswirkungen haben, ist wenig über ihre Prävalenz bekannt. Unser Ziel ist es, die Lebenszeitprävalenz von Verletzungen im Zusammenhang mit dem Surfen in der Bevölkerung der portugiesischen Surflehrer (SL) zu bestimmen.
Dies ist eine Studie der portugiesischen SL-Population. Eine Online-Umfrage wurde an die Lehrer aller im portugiesischen Surfverband registrierten Surfschulen verteilt. Die Umfrage umfasste eine kurze demografische Charakterisierung und Fragen zu früheren Surfverletzungen.
102 Lehrer haben die Umfrage beantwortet. Die meisten SL waren männlich (94,1 %), mit einem Medianalter von 37 Jahren (Bereich 20–52) und einer Medianerfahrung im Surfen von 22 Jahren (Bereich 1–40). Die häufigsten Verletzungen waren Muskel-Skelett- (58,2%) sowie Haut- und Weichgewebeerkrankungen (58,2%). 46,8% berichteten über eine Vorgeschichte von Exostose des Außenohrs und 17,7% des Pterygiums. Gehirnerschütterung, Wirbeltrauma und Ertrinken waren selten. Wir fanden keinen Zusammenhang zwischen veschiedenen Modalitäten des Surfens und der Vorgeschichte von damit verbundenen Verletzungen (p > 0,05).
Unseres Wissens nach ist dies die erste Untersuchung zu Verletzungen portugiesischer SL. SL stellen eine erfahrene Surfpopulation dar und sind daher geeignet, eine vielfältige Geschichte früherer Verletzungen zu erhalten. Zudem erhalten wir eine breitere Perspektive auf akute und langfristige Verletzungen, die Surfer bei der Ausübung dieses Sports erleiden können.
Portugiesische SL haben eine hohe Rate an traumatischen Verletzungen, was auf die Notwendigkeit eines systematischen Ansatzes zur Verletzungsprävention und Wassersicherheitserziehung in der Surfgemeinschaft hinweist.
Background
Unintentional injury is the leading cause of death in children and adolescents. Injuries occurring during boating and recreational water sports are poorly described in the literature. ...Herein, we compare injuries from water sports to those resulting from motor vehicle collisions, which are better described in existing literature.
Methods
A retrospective review of 1935 consecutive pediatric trauma patients, as defined by age < 18 years, admitted to a single level-1 pediatric trauma center between January 2000 and August 2013 was performed. Patients were divided into two cohorts based on the mechanism of injury: water sports injury (WSI) or motor vehicle collision (MVC). Demographics, injury descriptors, and outcomes were reviewed for each patient. Categorical variables were compared by Chi square or Fisher’s exact test, and continuous by
t
test or Mann–Whitney
U
test. Parametric data are reported as mean ± standard deviation and nonparametric as median (interquartile range). Significance was set at alpha level 0.05.
Results
A total of 18 pediatric patients were admitted for WSI and 615 for MVC during the study period. Among those with WSI, mean age was 12 ± 4 years, mean Injury Severity Score (ISS) was 11 ± 10, and mean Revised Trauma Score (RTS) was 7.841(IQR 6.055–7.841). 44% of WSI occurred by personal watercraft (Jet Ski, WaveRunner), 39% by boat, and 17% by other means (e.g., diving, tubing, kite surfing). Overall, the most common WSI included skin/soft-tissue lacerations (59%), head injury/concussion (33%), tendon/ligament lacerations (28%), and extremity fractures (28%). Compared to 615 patients admitted for MVC, age, sex, race, Glasgow Coma Scale, ISS, RTS, spleen and liver laceration rates, neurosurgical consultation, ICU admission, ICU and total length of stay, and mortality were similar. Patients with WSI were more likely to be tourists (44% vs. 5%,
p
< 0.001). Those with WSI showed a significantly higher requirement for any surgical intervention (61% vs. 15%,
p
= 0.001). The rate of open fracture (28% vs. 6%,
p
= 0.006) and, subsequently, orthopedic procedures (39% vs. 17%,
p
= 0.027) were also higher in the WSI group.
Conclusion
Overall, water sports injuries are similar in in-hospital mortality to motor vehicle collisions. They are more likely to result in penetrating trauma and more likely to require surgical intervention. Primary and secondary prevention strategies should specifically target personal watercraft usage and tourist populations.
Leptospirosis is a zoonotic and waterborne disease worldwide. It is a neglected, reemerging disease of global public health importance with respect to morbidity and mortality both in humans and ...animals. Due to negligence, rapid, unplanned urbanization, and poor sanitation, leptospirosis emerges as a leading cause of acute febrile illness in many of the developing countries. Every individual has a risk of getting infected as domestic and wild animals carry leptospires; the at-risk population varies from the healthcare professionals, animal caretakers, farmers and agricultural workers, fishermen, rodent catchers, water sports people, National Disaster Response Force (NDRF) personnel, people who volunteer rescue operations in flood-affected areas, sanitary workers, sewage workers, etc. The clinical manifestations of leptospirosis range from flu-like illness to acute kidney failure (AKF), pneumonia, jaundice, pulmonary hemorrhages, etc. But many rare and uncommon clinical manifestations are being reported worldwide. This review will cover all possible updates in leptospirosis from occurrence, transmission, rare clinical manifestations, diagnosis, treatment, and prophylactic measures that are currently available, their advantages and the future perspectives, elaborately. There are less or very few reviews on leptospirosis in recent years. Thus, this work will serve as background knowledge for the current understanding of leptospirosis for researchers. This will provide a detailed analysis of leptospirosis and also help in finding research gaps and areas to focus on regarding future research perspectives.
Leandro Quidel-Catrilelbún, ME, Ruiz-Alias, SA, García-Pinillos, F, Ramirez-Campillo, R, and Pérez-Castilla, A. Acute effect of different velocity-based training protocols on 2000-m rowing ergometer ...performance. J Strength Cond Res 38(1): e8-e15, 2024-This study aimed to explore the acute effect of 4 velocity-based resistance training (VBT) protocols on 2000-m rowing ergometer (RE2000) time trial, as well as the behavior of the maximal neuromuscular capacities when RE2000 is performed alone or preceded by VBT protocols in the same session. Fifteen male competitive rowers (15-22 years) undertook 5 randomized protocols in separate occasions: (a) RE2000 alone (control condition); (b) VBT against 60% of 1 repetition maximum (1RM) with a velocity loss in the set of 10% followed by RE2000 (VBT60-10 + RE2000); (c) VBT against 60% 1RM with a velocity loss in the set of 30% followed by RE2000 (VBT60-30 + RE2000); (d) VBT against 80% 1RM with a velocity loss in the set of 10% followed by RE2000 (VBT80-10 + RE2000); (e) VBT against 80% 1RM with a velocity loss in the set of 30% followed by RE2000 (VBT80-30 + RE2000). The load-velocity relationship (load-axis intercept L0, velocity-axis intercept v0, and area under the load-velocity relationship line Aline) was used to evaluate the maximal neuromuscular capacities during the prone bench pull exercise before and after each protocol. The time trial was significantly longer for VBT60-30 + RE2000 and VBT80-30 + RE2000 than for RE2000, VBT60-10 + RE2000 and VBT80-10 + RE2000 (all p < 0.001; ES = 0.10-0.15). L0 and Aline were significantly reduced after all protocols (p < 0.001; ES = 0.10-0.13), with Aline reduction more accentuated for VBT60-10 + RE2000, VBT60-30 + RE2000, VBT80-30 + RE2000, and RE2000 (all p = 0.001; ES = 0.11-0.18) than for VBT80-10 + RE2000 (p = 0.065; ES = 0.05). Therefore, VBT protocols with greater velocity loss in the set (30% vs. 10%) negatively affected subsequent rowing ergometer performance, in line with impairment in Aline pulling performance.
Narcissism, a personality trait marked by an excessively self-aggrandizing, entitled, and dominant orientation, has been associated with high performance under competitive pressure, as these contexts ...afford the opportunity to self-enhance. Narcissism is often characteristic of organizational and political leaders, yet little is known about narcissism in sports coaches. We propose that in a competitive context narcissistic coaches could inspire and motivate their athletes to raise their performance. We investigated the association between coach narcissism and athletes' performance, and the role of athletes' perceived self-enhancement opportunity as a potential mediating mechanism. We examined coach narcissism, athletes' individual end times (i.e., performance), and athletes' perceptions of self-enhancement opportunity during annual national indoor rowing competitions in 266 national level competitive rowers from 52 rowing clubs. Results of multilevel analyses showed that coach narcissism positively predicted athlete performance, and this was explained by athletes' perceived opportunity to self-enhance during the competition. Thus, narcissistic coaches seem to reinforce athletes' perceptions that competition provides them with an opportunity to show off their skills, which in turn accounts for athletes' better performance in comparison to athletes who do not train with narcissistic coaches. The findings point to a potentially functional side of narcissism in coaching.
The sport of surfing has grown exponentially. Early studies of surfing injuries are outdated as newer and more accessible surf technology has become available. This study's goal was to describe ...surfing injury patterns, incidence, and disposition of pediatric and adult surfers.
A retrospective review of surfing injuries from 2009 to 2020 of adult (>18 years of age) and pediatric (<18 years of age) patients was performed using the National Electronic Injury Surveillance System (NEISS) database. The consumer product code 1261 (Surfing) was used to identify injury patterns. Chi-squared test was performed on all categorical variables. Logistic regression was used on significant variables from the frequency tables. All analysis was performed with R-statistical programming software.
There was an overall decreasing trend of surfing injuries over time. Injuries for both adult and pediatric patients tended to occur most within the summer season (p<0.001). The odds of an adult surfing injury victim being male is 2.89 (95% CI 1.87–4.44). The head/neck/face were the most injured body part in both groups. The pediatric group had a significantly higher rate of concussions at 6.5% compared to the adult group at 3.2%. Overall, the most common injury type was to the skin (p<0.001). Disposition between groups were similar with most patients being discharged home. Mortality was rare with three reported fatalities in the adult group and none in the pediatric group.
The incidence of surfing injuries is continuing to decline despite more people surfing, revealing the improved safety of the sport over the last decade. Head/neck/face injuries are common injury locations, and pediatric surfers are particularly at increased risk of concussions. Continued education, usage of safety equipment such as protective headgear, and awareness of injury patterns, could further lessen potential injuries.
Display omitted
Abstract
Grand challenges exist in the fabrication of robust skin electronics that are resistant to water interference, which can play vital roles in healthcare and lifesaving in activities such as ...showering, surfing, and swift water rescue. Particularly, dynamic water impingement is very destructive to skin electronics by causing device–skin delamination and sensing malfunctions. Herein, an anemone‐inspired self‐adhesive epidermal sensor with superior ability to resist water interference in various aquatic environments is developed. The epidermal sensor consists of a strain sensing layer composed of interconnected graphene flakes wrapped in ultrathin Ecoflex and a self‐adhesive layer composed of semi‐crosslinked polydimethylsiloxane, which is named as an adhesive graphene encapsulated in Ecoflex (a‐G@E) sensor. The a‐G@E sensor can conformally and stably attach on the skin under the synergy effect of the ultrathin thickness and the self‐adhesive layer. Remarkably, it can maintain a highly stable device–skin interface even under extreme aquatic conditions such as intense water impingement (up to 4 m s
−1
). As examples, this study demonstrates its applications in transmitting information, controlling robotics underwater, and tracking swimming modes of a fish. It is believed that the a‐G@E sensor can play a unique role in health‐care, sports‐monitoring, and human–machine interactions, especially for aquatic scenarios.
Childhood obesity is a major health concern and physical activity is commonly proposed as an intervention strategy to combat the increasing prevalence of overweight and obesity in young people. The ...aim of this study was to examine the effect of high-intensity, supervised, rowing ergometer training on maximal and submaximal rowing performance in healthy weight and centrally obese adolescents (12-13 yr).
Participants were randomized to either 6 wk of supervised rowing ergometry, comprising of 2 sessions per week with each session comprising of 2 × 3-min bouts of high-intensity rowing ergometry ( n = 57), or a control group who continued with their habitual activities ( n = 45). At baseline and follow-up, rowing performance was assessed via a submaximal test and a 3-min maximal test.
Six weeks of rowing ergometer training significantly improved maximal exercise performance; total distance rowed in a 3-min maximal effort improved by 19.7 m (2.7%) (time × group, P = 0.018) and produced a significant reduction in perceived effort in response to a set submaximal load (60 W) (time × group, P = 0.040). At baseline total distance rowed during the 3-min maximal test was significantly affected by body mass (main effect of body mass, P = 0.002), whereby a higher body mass was associated with enhanced rowing performance. However, the pattern of change over time was not different between healthy weight and centrally obese adolescents (time × group × waist centile, P = 0.577).
A 6-wk high-intensity rowing ergometry training intervention improved maximal rowing performance. This improvement was similar in healthy weight versus overweight and obese adolescents; yet overall overweight and obese adolescents had superior rowing performance compared to their healthy weight counterparts, suggesting that rowing may be an attractive exercise modality for interventions in overweight and obese young people.
PDF
