Purpose: To verify the effects of using different grip widths in bench press performance in Paralympic powerlifting athletes. Methods: Twelve experienced Paralympic powerlifting male athletes (25.40 [3.30] y, 70.30 [12.15] kg) participated in the study. Maximal dynamic strength and maximal isometric strength (MIS) were determined. Then, mean propulsive velocity (MPV) using 25%, 50%, and 100% of maximal dynamic strength load and time to achieve 30%, 50%, and 100% of MIS were assessed with 4 different grip widths, specifically the biacromial distance (BAD: 42.83 [12.84] cm), 1.3 BAD (55.68 [16.70] cm), 1.5 BAD (63.20 [18.96] cm), and 81 cm. Electromyographic analysis was performed during MIS assessment in the pectoralis major sternal portion, anterior deltoid, triceps brachii long head, and pectoralis major clavicular portion. Results: Large differences were found between MPV performed with different grip widths using 25% of maximal dynamic strength load (P = .02, ). The 1.5 BAD grip tended to show greater force generation and MPV. Moreover, the time needed to achieve 30%, 50%, and 100% of MIS differed between grip widths (P = .03, ), with the lowest values obtained in the 1.5 BAD. Despite the nonstatistical differences that were found, grip widths caused moderate effects on muscle myoelectric activation, showing greater values for pectoralis major clavicular portion and pectoralis major sternal portion, for the 1.3 BAD and 1.5 BAD, respectively. The 1.5 BAD the grip width tended to show greater MPV values and faster contractile responses. Conclusions: These results highlighted the importance of choosing the specific grip width for improvement of performance in Paralympic powerlifting athletes, by increasing velocity of movement and force production in a shorter time, with greater activation of primary muscles.
Composto por três volumes, este e-book "Ciências da Saúde: Avanços Recentes e Necessidades Sociais" traz em seu arcabouço um compilado de 68 estudos científicos que refletem sobre as ciências da saúde, seus avanços recentes e as necessidades sociais da população, dos profissionais de saúde e do relacionamento entre ambos. No intuito de promover e estimular o conhecimento dos leitores sobre esta temática, os estudos selecionados fornecem concepções fundamentadas em diferentes métodos de pesquisa: revisões da literatura (sistemáticas e integrativas), relatos de caso e/ou experiência, estudos comparativos e investigações clínicas.O primeiro volume aborda ações voltadas ao ensino e aprendizagem, atuação profissional e diálogo interdisciplinar, bem como práticas integrativas para fomento da formação profissional continuada, com vistas ao atendimento comunitário e/ ou individualizado. São explorados temas como ações em projetos de extensão universitária; análise de atendimento e estrutura de unidades básicas de saúde; conceitos de atuação profissional; métodos didáticos de ensino e aprendizagem, dentre outros.O segundo volume tem enfoque nos seguimentos de diagnósticos, prevenção e profilaxia de diversas patologias. Debruçando-se nesta seção, o leitor encontrará informações clínicas e epidemiológicas de diversas patologias e fatores depletivos do estado de saúde, tais como: câncer; cardiopatias; obesidade; lesões; afecções do sistema nervoso central; dentre outras síndromes e distúrbios.Por fim, o terceiro volume engloba um compilado textual que tange à promoção da qualidade de vida da população geral e de grupos especiais. São artigos que exploram, cientificamente, a diversidade de gênero, a vulnerabilidade psicossocial e a conexão destes tópicos com a saúde pública no Brasil e a inclusão social.São apresentadas ações voltadas à população idosa; adolescentes; diabéticos; transexuais; encarcerados; mulheres; negros; pessoas com deficiência; entre outros.Enquanto organizadores, acreditamos que o desenvolvimento de estratégias de atuação coletiva, educacional e de inclusão social devem, sempre que possível, guiar a produção científica brasileira de modo a incentivar estágios de melhoramento contínuo; e, neste sentido, obras como este e-book publicado pela Atena Editora se mostram como uma boa oportunidade de diversificar o debate científico nacional. Boa leitura!
This study aims to compare the sleep parameters in Paralympic powerlifting athletes during days with and without training, and to analyze the relationship between the training load and sleep on the same day and the relationship between the previous night's sleep and the training load of the following day. Methods: Actigraphy was used to analyze the sleep parameters of 11 Paralympic powerlifting athletes for 14 days (7 days without and with training), whereas Ratings of Perceived Exertion (RPE) analysis was used to assess training load. In addition, the Horne and Östberg chronotype questionnaire and the Epworth Sleepiness Scale were applied. Results: Athletes show morning and indifferent chronotype and low daytime sleepiness. We found that on training days, sleep onset latency (SOL) was lower (average 5.3 min faster), whereas total sleep time (TST) and sleep efficiency (SE) were higher (TST averaged 169 min and SE 7% higher) compared to non-training days. In addition, the TST of the night before the training days correlated positively with the RPE of the following day, and the training volume correlated negatively with the SE of the same day. Conclusion: Our findings show that Paralympic powerlifting training had positive effects in increasing TST and SE and decreasing SOL on training days. These results show the positive effects of this type of training in improving sleep in athletes with physical disabilities. In addition, a good night's sleep the day before training can make it possible to put more effort into the next day's training. Therefore, guiding athletes to sleep more before training with more intense loads is recommended.
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