LINEAR KINEMATICS OF THE UNDERWATER UNDULATORY SWIMMING PHASE PERFORMED AFTER TWO BACKSTROKE STARTING TECHNIQUES

The purpose of this study was to analyze the effects on relevant kinematic parameters of the underwater undulatory swimming (UUS) phase of the repetition of these UUS cycles and of the starting technique used: the one with the feet parallel and entirely immerged (BSFI) and the other with the feet parallel and entirely emerged (BSFE). Four high level swimmers performed 3x15 m maximal sprints using each technique (BSFI and BSFE). In both starting techniques the mean horizontal velocity and horizontal amplitude were greater for the 4 initial UUS cycles than the last 4 ones. At BSFI, the 4 initial UUS cycles showed greater mean frequency than the last 4 ones. No differences were observed between BSFI and BSFE for the 4 initial UUS cycles. Coaches should consider the frequency of UUS cycles to optimize underwater phase performance at BSFI and BSFE

COMPARISON OF ISOKINETIC FORCE OF THE INTERNAL AND EXTERNAL ROTATORS OF THE SHOULDERS BETWEEN SWIMMERS OF ALTERNATE AND SIMULTANEOUS TECHNIQUES

The aim of this study was to compare the peak torque and the strength ratio between the external and internal swimmers’ right and left shoulder rotators between alternate and simultaneous swimming techniques. Sixteen competitive swimmers (3 females and 13 males) were divided equally into two groups, alternate and simultaneous swimming techniques. The experimental protocol consisted of three maximum concentric repetitions of internal rotation and external rotation of the shoulder at an angular velocity of 60°/s and twenty repetitions at a velocity of 180°/s, with a two minutes interval between speeds and four minutes in the change of laterality of the upper limbs on a Biodex isokinetic dynamometer (Biodex System 4.0, Biodex Corp., Shirley, NY, EUA).The peak torque and the strength ratio between the external and internal swimmers’ right and left shoulder rotators were measured. No difference was obtained between swimming techniques for peak torque and the strength ratio between the external and internal swimmers’ right and left shoulder rotators (p \u3e 0.05), except for the right shoulder internal rotation at 180º/s (alternate: 44.13 ± 11.58; simultaneous: 56.25 ± 8.83; p \u3c 0.05). Based on our results, peak torque and the strength ratio between the external and internal swimmers’ right and left shoulder rotators do not seem to be influenced by the athlete\u27s predominant swimming technique, with alternate (front crawl and backstroke) or simultaneous (breast and butterfly) strokes. The main findings of this study show that the balance relationships between the ER/IR rotators of the shoulders do not seem to be differentiated by the alternate and simultaneous swimming techniques. However, observing only the PT/IR at a speed of 180°/s of the right shoulders, there was a significant difference between the groups and, therefore, the ER/IR balance ratio was at the maximum limit of normality. Regardless of the specialization of the swimming technique, that is, alternate or simultaneous, swimmers can present imbalances in the internal and external rotators of the shoulders, which reveal the need for compensatory strength training focused on the rotator muscles of the shoulder

Conhecimentos da equipe de enfermagem diante da parada cardiorrespiratória: revisão integrativa

TCC(especialização) - Universidade Federal de Santa Catarina. Centro de Ciências da Saúde. Programa de Pós-graduação em Enfermagem. Linhas de Cuidado em Urgência e EmergênciaFoi realizada uma Revisão Integrativa da Literatura como objetivo de identificar o nível de conhecimento teórico-prático de enfermeiros e equipe técnica diante da PCR. Métodos: foram selecionados artigos publicados nas bases de dados SciELO, LILACS, BDENF e PUBMED, com os seguintes descritores: enfermagem na parada cardiorrespiratória, parada cardiorrespiratória e ressuscitação cardiopulmonar, nos idiomas português, inglês e espanhol, entre 2008 e 2014. Resultados: quatorze artigos atenderam aos critérios de inclusão. Encontrou-se que a parada cardiorrespiratória (PCR) é uma grave ameaça à vida do paciente, onde a enfermagem tem o papel extremamente importante no atendimento à PCR que deve ser prestado com rapidez e eficácia. Porém o que se observa e que na maioria das vezes, o atendimento de ressuscitação cardiopulmonar (RCP) é tumultuado, com ações não sistematizada devido a falta de conhecimento científico da equipe de enfermagem. Conclusão: os resultados mostraram deficiência no conhecimento da equipe de enfermagem diante das situações de parada cardiorrespiratória, sendo importante a realização de capacitações em Suporte Básico de Vida (SBV) e Suporte Avançado de Vida (SAV) e também a realização da educação continuada abordando temas de suma relevância para o bom desempenhos dos profissionais diante das necessidades dos pacientes

LOWER LIMBS JOINTS MOTION DURING SUBMAXIMAL 100-M BUTTERFLY

The aim of this study was to analyze the differences in the angular kinematics of the downbeat actions among four laps of a submaximal 100-m butterfly swim. Four female trained swimmers performed a 100-m butterfly at submaximal intensity (80% of individual’s best performance). One above and one underwater camera, positioned to capture motion in the swimmer’s sagittal plane, were used for movement analysis. Findings revealed that fatigue seems to affect the segmental co-ordination during downbeat actions at third and fourth laps. During the last laps swimmers registered a shorter time to extension of the knee joint in the second downbeat. It was also observed at third and fourth laps a decrease in knee and ankle angular displacement and velocity in both downbeats

ELECTROMYOGRAPHIC ANALYSIS OF TWO DIFFERENT FEET POSITIONS IN BACKSTROKE START

The aim of this study was to assess the electromyographic (EMG) activity of Bíceps Brachii, Tríceps Brachii, Deltoideus Anterior, Erector Spinae Longissimus, Rectus Femoris, Gluteus Maximus Gastrocnemius Medialis, muscles at two variants of the backstroke start, one performed with the feet parallel and entirely immerged (BSFI) and the other with the feet parallel and entirely emerged (BSFE). Four high level swimmers performed a 4x15 m maximal protocol of BSFI and BSFE. In both start variants the upper limbs muscles are mainly required during the initial start phases: (i) for BSFI, the Gastrocnemius Medialis showed greater electrical activity at take-off phase than hands-off and flight phases, and (ii) for BSFE, Erector Spinae Longissimus, Gluteus Maximus and Rectus Femoris registered similar electrical activity at hands-off and take-off phases

THE WEDGE EFFECTS ON VERTICAL FORCE-TIME CURVE INSTANTS AND ON BACKSTROKE START PERFORMANCE

This study compared vertical force and time at time reference points between backstroke start performed with and without wedge, and identified the relationships with 5 m start time. Ten swimmers (age 21.1 ± 5.36 years, stature 1.78 ± 0.04 m, body mass 72.82 ± 10.05 kg and mean 100 m backstroke performance of 59.67 ± 2.89 s) completed eight backstroke starts (four with and four without wedge) using the highest horizontal handgrip. An instrumented starting block recorded vertical force and time at the following points: (i) start signal; (ii) peak before hands-off; (iii) minimum at hands-off; and (iv) peak before take-off. Forces at instants after the start signal were greater when using the wedge and no relationships were observed between force, time at reference points and 5 m time. The wedge use can benefit vertical forces generation but not directly 5 m time

THE ROAD TO 2024 OLYMPIC GOLD MEDAL: A CASE REPORT OF THREE ELITE BEACH VOLLEYBALL PLAYERS

The anthropometrics, limbs maximum isometric force and jump performance in beach-volleyball players were described. Three female elite beach volleyball players selected to participate in the 2022 World Championships Circuit were recruited to participate in the study. Body composition, squat, supine, and rowing isometric maximal force, and power test, squat, and countermovement jumps were measured. Body fat percentage varied between 13 and 24.2%. Squat, supine and rowing isometric force (N) presented median (M) and interquartile ranges (IQR) of 145 (128, 186.6), 40 (33, 66.75) and 65.2 (57.6, 76,6). The height (cm), absolute (W) and relative power (W/kg) M and IQR range values were 32.55 (27.32, 35.10), 32.69 (31.50, 34.69) and 44.18 (40.65, 46.30). Findings can guide morphological and physical training for elite players

Presença e visibilidade da literatura hispanófona em quatro revistas brasileiras de biblioteconomia, documentação e ciência da informação: análise de citação

Análise de citação de quatro revistas brasileiras de biblioteconomia, documentação e ciência de informação no período de 1990 a 2006, visando a detectar a presença da literatura da área publicada e citada em espanhol. Destaca a revista Ciência da Informação como a mais produtiva de artigos e citações e a Espanha responsável pelo maior número de artigos publicado. Pelo pouco uso da literatura espanófona como base para a produção do conhecimento brasileiro e pelo elevado número de artigos de autoria individual, conclui-se que não há equipe de pesquisadores trabalhando em cooperação na América do Sul. Palavras-chave: Ciência da informação. Informação no Mercosul. Citação em espanhol. Periódicos de biblioteconomia. Presence and visibility of Spanish literature in four Brazilian library journals, documentation and information science: analysis of citation Abstract Citations analysis of four library and information science Brazilian journals in the period of 1990 to 2006. The main objective is to point out the Spanish literature published and cited in the four Brazilians journals. “Ciência da Informação” published and cited the majority of Spanish language works. By the few use of Spanish literature by Brazilian authors and by the high number of individual authors we conclude that there is no research group working in collaboration in the South America. Keyword: Information science. Information in Mercosul. Spanish citation. Citation analysis. Library and information science journals

Cultura em tempos de Crivella: executivo e bancada evangélica do Legislativo na área de cultura no Rio de Janeiro em 2017

O objetivo do artigo é examinar a atuação do Poder Executivo e dos membros da bancada evangélica do Poder Legislativo na área de cultura, no município do Rio de Janeiro, em 2017. O argumento central aponta que houve alinhamento entre o Executivo e os membros da bancada evangélica no Legislativo no que diz respeito ao conteúdo de projetos relacionados à esfera da cultura e da economia criativa quanto à limitação da diversidade cultural e artística na cidade. Diante da ação de membros de partidos de oposição ao Executivo na Comissão de Cultura da Câmara Municipal, este buscou evitar canais institucionais que necessitassem da aprovação de tal Comissão para implementar uma agenda política na esfera da cultura que preservasse valores da moralidade cristã, compatíveis com os interesses da bancada evangélica no Legislativo