Influence of different recovery intervals on time under tension, total training volume, and fatigue index in horizontal bench press exercise in young male wrestling athletes.

BACKGROUND: The recovery interval (RI) seems to be a variable closely related to the training volume since it can determine the performance after this rest time. This study investigated the influence of different recovery intervals on time under tension (TUT), total training volume (TTV), and Fatigue Index (FI) in the horizontal bench press exercise. METHODS: Eighteen male wrestling athletes underwent three visits: 1st) performed the 10-repetition maximum (10RM) test; 2nd and 3rd) performed 5 sets of up to 10 repetitions with 1 minute (RI1) and 3 minutes (RI3) of passive RI with randomized entry. TUT, number of repetitions, TTV and FI data were collected or calculated. RESULTS: TUT was lower in sets 5 (P<0.001) for RI1 when compared to RI3, with no significant difference for the other 4 sets. The number of repetitions for RI1 was lower when compared to RI3 in sets 3 (P=0.018), 4 (P=0.023), and 5 (P<0.001), with no significant difference in sets 1 and 2. The FI was significantly higher for RI1 (P<0.001); however, TTV was significantly higher for RI3 (P=0.007). CONCLUSIONS: Different RI influenced the TUT and the number of repetitions along 5 sets in the horizontal bench press exercise. Moreover, these two variables showed different behavior when compared under the same condition (RI1 or RI3), especially after the third set. Using longer RI demonstrated a greater ability to maintain TTV and less negative effect of fatigue in young male wrestling athletes.

Effect of Different Numbers of Interset Antagonist Proprioceptive Neuromuscular Facilitation Stretching on the Total Number of Repetitions for the Agonists.

Recent studies have observed that stretching applied to antagonist muscles can promote improvement in agonist muscle performance. The purpose of this study was to investigate the effect of different numbers of interset proprioceptive neuromuscular facilitation (PNF) stretching for the antagonists on the total number of repetitions completed for the agonists (quadriceps) in the leg extension exercise. Fourteen physically active individuals (age: 29.35 ± 10.5 years; body mass: 79.1 ± 11.34 kg; height: 170.4 ± 8.7 cm) participated in this study. The following experimental protocols were performed: 1) Traditional protocol (Traditional) - without previous stretching; 2) PNF with lesser duration (PNF1-3 sets of 20 secs.); 3) PNF with greater duration (PNF2-3 sets of 30 secs.). Within the experimental protocols (PNF1 and PNF2), stretching exercises for the antagonists were performed before and between the four sets of the unilateral leg extension exercise. All tests were performed on the dominant limb only. The results showed that there was a significant difference in the total number of repetitions for the PNF2 protocol versus the Traditional protocol (p = 0.026). However, there was no significant difference between the PNF1 protocol versus the Traditional protocol (p = 0.577). In conclusion, in the leg extension exercise, an extended duration of interset PNF stretching for the hamstrings, promoted greater contractile performance for the quadriceps as demonstrated by significantly greater total repetitions over four sets.

Effects of Different Types of Resistance Training and Detraining on Functional Capacity, Muscle Strength, and Power in Older Women: A Randomized Controlled Study.

ABSTRACT: Filho, MM, Venturini, GRdO, Moreira, OC, Leitão, L, Mira, PA, Castro, JB, Aidar, FJ, Novaes, JdS, Vianna, JM, and Caputo Ferreira, ME. Effects of different types of resistance training and detraining on functional capacity, muscle strength, and power in older women: A randomized controlled study. J Strength Cond Res 36(4): 984-990, 2022-Resistance training (RT) increases muscle strength, power, and functional capacity (FC) of older women. However, these benefits can be lost partially or totally with detraining. This study aimed to compare the effect of 20 weeks of different types of RT and 4 weeks of detraining on muscle strength, power, and FC in older women. Ninety-five older women were randomly divided into 4 experimental groups (strength endurance, power, absolute strength, and relative strength training) and 1 control group (CG). We assessed muscle strength (10RM test) and muscle power of the lower (countermovement jump) and upper limbs (medicine ball pitch). Functional capacity was assessed by the Senior Fitness Test, which comprises the following tests: 30-second arm curl, 30-second chair stand, back scratch, chair sit and reach, 8-foot up and go, and 6-minute walk. The experiment lasted 24 weeks (familiarization: 2 weeks; neural adaptation: 6 weeks; specific training: 12 weeks; and detraining: 4 weeks). Muscle strength, lower and upper limb power (all p < 0.05), 30-second arm curl, 30-second chair stand, 8-foot up and go, 6-minute walk (all p < 0.001), and lower limb flexibility (p = 0.002) improved in all experimental groups after training and CG showed no differences in any of these variables. After detraining, muscle strength, lower and upper limb power (p < 0.05 for all), and FC decreased in comparison to the end of RT (30-second arm curl, 30-second chair stand, 8-foot up and go, 6-minute walk, and lower limb flexibility, p < 0.05 for all). Although the FC of the subjects has been reduced after 4 weeks of detraining, it was maintained at higher levels in comparison to baseline. These results suggested that older women can be submitted to different types of RT to achieve improvements in general fitness.

Perfil do estilo de vida de universitários de Educação Física da cidade do Rio de Janeiro / Lifestyle profile of Physical Education students in the city of Rio de Janeiro

Diversos hábitos adquiridos durante os anos cursados nas universidades permanecem incorporados ao cotidiano dos estudantes, mesmo após a conclusão do curso. O objetivo deste estudo é avaliar fatores específicos relacionados ao estilo de vida e à qualidade de vida em universitários do curso de Educação Física da Universidade do Estado do Rio de Janeiro (UERJ). Trata-se de um estudo descritivo com abordagem quantitativa com alunos do primeiro ao último período acadêmico com matrícula ativa no curso de graduação em Educação Física (Licenciatura e Bacharelado) da UERJ, com ingresso por meio do vestibular. Foi aplicado um questionário adaptado do Perfil do Estilo de Vida Individual, contendo oito componentes: alimentação, atividade física, autoimagem, relacionamentos, controle do estresse, finanças, comportamento preventivo e sono restaurador. Utilizou-se o teste de Spearman para analisar a associação entre os domínios do questionário (p < 0,05). A amostra foi composta por 103 estudantes (idade: 22,16 ± 3,85 anos), 66,02% do sexo masculino e 33,98% do sexo feminino. A análise dos componentes revelou uma tendência de os jovens universitários apresentarem, ao iniciar a fase adulta, dificuldade em manter níveis ideais de sono restaurador (3,19 ± 2,02) e finanças (4,14 ± 2,15). O componente relacionamentos (7,49 ± 1,61) apresentou os melhores níveis. Pode-se concluir que os estudantes de Educação Física pesquisados nem sempre conseguem seguir as recomendações que eles mesmos irão disseminar para clientes e alunos. Esse distanciamento entre o discurso e a prática se manifestou em diferentes graus, configurando diversos níveis de inadequações às práticas concernentes à saúde. Assim sendo, os conhecimentos acerca da importância dos hábitos de saúde nem sempre se manifestaram no comportamento alimentar, na atividade física, no sono e demais componentes atrelados à qualidade de vida e ao estilo de vida da amostra do presente estudo....(AU)

Several habits acquired during routed years in universities remain embedded in the daily lives of students, even after completing the course. The aim of this study is to evaluate specific factors related to lifestyle and quality of life in undergraduates of the Physical Education course at the State University of Rio de Janeiro (UERJ). This is a descriptive study with a quantitative approach with students from the first to the last academic period with active enrollment in the undergraduate degree in Physical Education (Licentiate and Bachelor's degree) of UERJ, with admission through the entrance exam. We applied a questionnaire, adapted from the Individual Lifestyle Profile, containing eight components: nutrition, physical activity, self-image, relationships, stress management, finance, preventive behavior and restorative sleep. We used the Spearman test to analyze the association between the domains of the questionnaire (p < 0.05). The sample consisted of 103 students (age: 22.16 ± 3.85 years), 66.02% male and 33.98% female. The analysis of the components revealed a tendency for university students present, at the beginning of adulthood, difficulty in maintaining optimal levels of restorative sleep (3.19 ± 2.02) and finance (4.14 ± 2.15). The component relationships (7.49 ± 1.61) showed the best levels. It can be concluded that the students of Physical Education researched do not always follow the recommendations that they themselves will disseminate to clients and students. This distance between discourse and practice has manifested itself in different degrees, setting different levels of inadequacies in health practices. Therefore, knowledge about the importance of health habits was not always manifested in the eating behavior, physical activity, sleep and other components related to the quality of life and lifestyle in the sample of the present study....(AU)