ABSTRACT
O método Fascia Stretch Training 7 Sets (FST-7) ganhou popularidade nos últimos anos sendo disseminado por fisiculturistas norte-americanos. O objetivo do presente estudo foi comparar os efeitos do protocolo de treinamento do método FST-7 com ou sem alongamento passivo entre as séries nas variáveis metabólicas (lactato [LAC] e creatinofosfoquinase [CPK]), desempenho (volume total de treinamento VTT) e percepção subjetiva de esforço (PSE) em homens bem treinados. Nove homens (23, 2 ± 1,7 anos; 174,2 ± 6,2 cm; 84,6 ± 9,8 kg, 3,4 ± 1,0 anos de experiência em treinamento de força) foram submetidos ao teste e re-teste de 10 repetições máximas (10RM) nos exercícios supino reto livre e crucifixo horizontal com halteres em dias distintos, respeitando 48 horas de intervalo entre a s sessões de teste e re-teste. Decorridas 72 horas do último dia de teste, os participantes realizaram os protocolos experimentais de forma randomizada com 72 horas de intervalo entre as sessões. As coletas sanguíneas foram realizadas 10 minutos antes e imediatamente após os protocolos de treinamento. O protocolo sem alongamento aumentou significativamente a concentração de LAC (p = 0,029). No entanto, o mesmo não ocorreu para a concentração de CPK (p = 0,302). O VTT foi maior para o protocolo sem alongamento (p < 0,001) e a PSE foi maior para o protocolo com alongamento entre as séries (p = 0,003). Concluímos que o método FST-7 com alongamento resultou em uma maior PSE, o que pode estar relacionado com o declínio do desempenho, traduzido pelo menor VTT em relação à condição sem alongamento. Adicionalmente, o menor VTT pode ter afetado o menor acúmulo de LAC observado no método FST-7 com o alongamento. (AU)
The Fascia Stretch Training 7 Sets (FST-7) method has gained popularity in the recent years being disseminated by American bodybuilders. The purpose of the study was to compare the effects of the Fascia Stretch Training 7 Sets (FST-7) method with or without passive stretching between sets on metabolic variables (lactate [LAC] and creatine kinase [CK]), performance (total training volume - TTV) and rating of perceived exertion (RPE) in trained men. For this, nine recreationally trained men (23.2 ± 1.7 years; 174.2 ± 6.2 cm; 84.6 ± 9.8 kg, 3.4 ± 1.0 years of experience in strength training) were submitted to the test and re-test of 10 repetition maximum (10RM) in the barbell bench press and fly with dumbbells on different days, respecting a 48-hour interval between the test and re-test sessions. After 72 hours of the last test day, participants performed the experimental protocols in randomized order with a 72-hour interval between sessions. Blood samples were taken 10 minutes before and immediately after the training protocols. The protocol without stretching was significantly increased LAC concentrations (p = 0.029). However, the same did not occur for the concentration of CK (p = 0.302). The TTV was higher for the protocol without stretching (p < 0.001), and the RPE was significantly higher for the protocol with stretching between sets (p = 0.003). We concluded that the FST-7 method with stretching resulted in higher RPE, which may be related to the decline in performance, translated by the lower TTV in relation to the condition without stretching. This lower TTV may have affected the lower LAC accumulation observed in the FST-7 method with stretching. (AU)
Subject(s)
Humans , Male , Adult , Muscle Stretching Exercises , Fatigue , Endurance Training , Lactates , Men , Physical Education and Training , Creatine Kinase , Efficiency , Fascia , Resistance TrainingABSTRACT
The session order of aerobic and resistance training seems to be important for glycemic behavior, as when performed in isolation they help to reduce glycosylated hemoglobin. The purpose of the present study was to compare the acute effect of aerobic and resistance training session orders on glycemia levels of older adults with type 2 diabetes mellitus. A counterbalanced crossover design was used in this study. Eighteen older adults with type 2 diabetes, 13 men and 5 women, non-insulin and beta-blocker dependents, were recruited. All participants performed two training sessions in different orders: aerobic + resistance (AER) and resistance + aerobic (RES). There was a seven-day interval between sessions. In the AER session, a significant (p < 0.001) decrease in blood glucose was observed between training (Mid moment: p < 0.001) and after each session (Post moment: p = 0.003) compared to the baseline (Pre moment). In the RES session, no difference (p = 0.731) was found at the Mid moment in relation to the Pre moment, but a significant (p < 0.001) decrease in blood glucose was observed in the Post moment. A comparison of the different training sessions showed a significant difference (p = 0.012) at the Mid moment, whereas the blood glucose showed a sharper reduction the AER session. In conclusion, we observed that combined training, regardless of the order, was effective for acute glycemic behavior in older people with type 2 diabetes, and aerobic training was the main factor responsible for the reduction blood glucose
A ordem da sessão de treino aeróbio e resistido parece ser importante para a resposta glicêmica, uma vez que quando realizados isoladamente ajudam a reduzir a hemoglobina glicosilada. O objetivo do presente estudo foi comparar a ordem da sessão de treinamento aeróbio e resistido na resposta glicêmica agudo em idosos com diabetes tipo 2. A amostra foi composta por idosos, diagnosticados com diabetes do tipo 2, 13 homens e 5 mulheres, não tratados com insulina e betabloqueadores. Todos realizaram duas sessões de treinamentos com diferentes ordens: aeróbio + resistido (AER) e resistido + aeróbio (RES). As sessões foram separadas por sete dias. Na sessão AER, foi observado uma diminuição significativa (p < 0,001) da glicemia entre as sessões (ENTRE: p < 0,001) e após cada sessão (PÓS: p = 0,003) em comparação com a linha de base (PRÉ). Na sessão RES, nenhuma diferença (p > 0,731) foi encontrada no momento ENTRE em relação ao momento PRÉ, mas uma diminuição significativa (p < 0,001) da glicose no sangue foi observada no momento PÓS. Uma comparação das diferentes sessões de treinamento mostrou uma diferença significativa (p = 0,012) no momento ENTRE, enquanto a glicemia mostrou uma queda mais acentuada na sessão AER. Concluiu-se que o treinamento combinado, independente da ordem, foi eficaz na resposta glicêmica aguda em idosos com diabetes do tipo 2 e o treinamento aeróbico foi o principal responsável pela queda de glicose no sangue
Subject(s)
Diabetes Mellitus , Aerobic Treatment , Resistance Training , Glycemic ControlABSTRACT
Abstract Aim: To verify the acute effect of sodium bicarbonate (NaHCO3) supplementation on performance during CrossFit® workout. Methods: Nine experienced males (30.8 ± 3.5 years; 84.4 ± 9.5 kg; 177.5 ± 4.03 cm; 2.2 ± 1.0 years) in CrossFit® participated in this study. They were allocated to two conditions: a) supplementation with 0.3 g.kg-1 of body weight of NaHCO3 and b) supplementation with 0.045 g.kg-1 of body weight of sodium chloride (NaCl). Blood lactate was analyzed at two different moments: before (lac-pre) and after the training protocol (lac-post). The heart rate (HR) and the rating of perceived exertion (RPE) were also collected every two minutes during the execution of the training protocol, and the RPE was also collected after it was finished. At the end of the training protocol, a questionnaire to measure gastrointestinal side effects (GSE) was answered by the participants. Repetitions performed in the training protocol was computed to evaluate the performance during the workout. Results: The results showed that there were no differences found when comparing the conditions for all parameters. HR and RPE were different in the first few minutes (< 4-6 minutes) when compared to the final minutes (> 14 minutes) of the workout. The area under the curve of HR and RPE was significantly lower in the NaHCO3 condition. Conclusion: Acute NaHCO3 supplementation did not improve performance during workout 'Cindy' in experienced men. Supplementation also did not alter hemodynamic and perceptual parameters, nor did it cause any GSE. However, responses as a function of time were reduced with NaHCO3 supplementation.