RESUMO
The present study investigated acute muscular performance and metabolic responses to resistance training (RT) with inter-set stretching (ISS). Seventeen resistance-trained men (age: 30.0 ± 5.6 years; body mass: 81.8 ± 13.4 kg; height: 173 ± 6.2 cm; RT experience: 4.6 ± 1.7 years) completed the ISS and traditional training (TT) protocol seven days apart in a randomized order. In both protocols, 7 sets of the seated cable fly exercise were performed with a 10-repetition maximum (10-RM) load. During the ISS protocol, subjects completed inter-set passive static stretching of the agonist muscles for 45 seconds, while a passive rest (no stretching) was adopted for the same duration in the TT protocol. The change in maximal bench press strength (1-RM), muscle swelling (ultrasound) of the pectoralis major (PMMS), and blood lactate were assessed immediately following each protocol. Additionally, the total load lifted (TLL) and internal training load (ITL) were assessed in both protocols. There was no difference between protocols for the change in maximal bench press 1-RM (p > 0.05). There were higher values for PMMS (p < 0.05) and blood lactate (p < 0.05) following the TT versus the ISS protocol. The TT resulted in higher TLL (p < 0.05) and ITL values (p < 0.05) versus the ISS protocol. Resistance training with inter-set stretching results in lower acute performance and metabolic responses versus traditional training with passive rest between sets. Therefore, inter-set stretching might be applied within a periodized program on lower intensity days to reduce the overall stress of a session.
RESUMO
Background: Trained subjects have difficulty in achieving continued results following years of training, and the manipulation of training variables through advanced resistance training (RT) methods is widely recommended to break through plateaus. Objective: The purpose of the present study was to compare the acute effects of traditional RT (TRT) versus two types of sarcoplasma stimulating training (SST) methods on total training volume (TTV), lactate, and muscle thickness (MT). Methods: Twelve trained males (20.75 ± 2.3 years; 1.76 ± 0.14 meters; body mass = 79.41 ± 4.6 kg; RT experience = 4.1 ± 1.8 years) completed three RT protocols in a randomly sequenced order: TRT, SST contraction type (SST-CT), or SST rest interval variable (SST-RIV) with 7 days between trials in arm curl (elbow flexors) and triceps pulley extension (elbow extensors) performed on the same day. Results: The SST groups displayed greater acute biceps and triceps brachii (TB) MT versus the TRT session, with no difference in lactate levels between them. The SST-CT resulted in greater biceps and TB MT versus the SST-RIV session. The TTV was greater for the TRT session versus the SST sessions, except in the case of the elbow flexors (no difference was observed between TRT and SST-CT), and higher for the SST-CT versus the SST-RIV. Conclusion: Trained subjects may benefit from using the SST method as this method may offer a superior MT stimulus and reduced training time, even with a lower TTV.
RESUMO
The purpose of the present study was to investigate the effect of two different resistance training (RT) prescription methods on phase angle (PA) in older women. Seventy-six older women (68.5 ± 5.7 years) were randomly assigned to one of three groups: two training groups that performed an eight-week RT programme either in a constant load (CT, n = 25) or an ascending pyramidal load (PR, n = 26) routine three times per week, or a control group (CG, n = 25) that performed no exercise. The CT programme consisted of three sets of 8-12 repetition maximum (RM) with a constant load for the three sets, whereas the PR training consisted of three sets of 12/10/8 RM with incremental loads for each set. PA was assessed by whole-body spectral bioelectrical impedance. After the RT period, both CT and PR achieved higher (P < .05) values of PA (CT = 5.76 ± 0.59°, PR = 5.63 ± 0.61°, CG = 5.48 ± 0.46°) compared to the CG; however, there was no difference (P > .05) between trained groups. The results suggest that eight weeks of RT based on a PR and CT load routines promote an improvement in PA, and both prescription methods performed similarly.
Assuntos
Composição Corporal , Força Muscular , Treinamento Resistido/métodos , Idoso , Água Corporal , Impedância Elétrica , Feminino , Humanos , Pessoa de Meia-IdadeRESUMO
Se analiza el efecto del entrenamiento en ajedrez según se utilice una metodología sensible con el desarrollo de competencias cognitivas y sociopersonales frente a otra focalizada en el entrenamiento táctico, en una muestra de educación obligatoria. Se utiliza un diseño cuasi-experimental con: grupo ajedrez 1: formación integral (n= 110); grupo ajedrez 2: formación centrada en el tablero (n= 60); y grupo de comparación: baloncesto y fútbol (n= 60). Las variables, medidas al inicio y final de curso académico, son: competencia cognitiva, evaluada mediante prueba de rendimiento; competencia socio-afectiva, mediante test auto-evaluativo; y competencia en ajedrez, mediante prueba de rendimiento. Los resultados muestran que el grupo de formación integral mejora no solo en competencias cognitivas básicas (atención y memoria), como ocurre en el grupo 2, sino también en competencias cognitivas más complejas (asociación, análisis y síntesis, planeamiento y previsión, entre otras). Igualmente mejora en el ámbito sociopersonal no solo en somatizaciones y comportamiento en clase, sino también en autoestima, motivación y actitud ante el estudio. Se concluye que los escolares que practican el ajedrez obtienen resultados significativamente superiores, en contraste con los que practican otras actividades (fútbol o baloncesto), en competencias cognitivas y sociopersonales, especialmente cuando se utiliza una metodología sensible con una formación integral.
It is analyzed the effect of chess training using a methodology focused on development of cognitive and socio-emotional competences or focused on tactical training, with a sample of compulsory education. In a quasi-experimental design: chess group 1, focused on comprehensive training (n= 110); chess group 2, focused on tactical training (n= 60); and comparison group, basketball and football activities (n= 60). Dependent variables analyzed, applied at the beginning and end of the academic course, were: cognitive competence, as assessed by performance testing; socio-emotional competence, through self-evaluation test; and chess competence, through performance test. Results showed that comprehensive training group improves not only in basic cognitive skills (attention and memory), as the group 2, but also in more complex cognitive skills (association, analysis and synthesis, planning and forecasting, etc). In socio-emotional level, not only in somatizations and classroom behavior, but also in self-esteem, motivation and attitude toward study. It is concluded that school children who practice chess obtained significantly superior results, in contrast to those who practice other activities (football or basketball), in cognitive and socio-personal skills, especially when a sensible comprehensive training methodology used.
RESUMO
The aim of this study was to compare the influence of including dropset exercises in different orders, both in the pre-exhaustion, as in the post-exhaustion method, and to analyze the performance of total work on the bench press and chest flying exercise. Twenty-two male volunteers with a recreational experience in ST were evaluated in six visits in non-consecutive days, at approximately the same time of the day. During the first visit, subjects signed an informed consent form and underwent an anthropometric evaluation and testing of 10RM. The second visit involved a re-test of 10RM. From third to sixth visits, the subjects were randomly grouped into the following experimental situations: 3rd Visit (V3 - Post-exhaustion): Bench Press (dropset) + Chest Flying (10RM); 4th visit (V4 - Post-exhaustion): Bench Press (10RM) + Chest Flying (dropset); 5th Visit (V5 - pre-exhaustion): Chest Flying (dropset) + Bench Press (10RM); 6th Visit (V6 - pre-exhaustion): Chest Flying (10RM) + Bench Press (dropset). The protocol of dropset was performed with 3 sets and no rest intervals 10RM + 80% 10RM + 60% 10RM. An interval between sets was adopted for 2 minutes. The primary results showed a significant difference in Total Work for visits V3 and V6, which was included in the dropset multiarticular exercises. These results suggest that the exercise order with the dropset method in the pre-exhaustion or post-exhaustion methods had an acute influence on Total Work.