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Abstract(s)
O aquecimento é uma parte fundamental de um treino, tendo como principal objetivo a
preparação para o exercício físico. No entanto, os estudos sobre o efeito do
aquecimento no desempenho da força muscular são escassos e pouco claros. O presente
estudo teve como objetivo verificar e comparar o efeito da realização de um
aquecimento geral seguido de aquecimento específico ou somente de um aquecimento
específico na realização de uma sessão de treino de força no exercício de agachamento.
Para isso, foram avaliadas as respostas mecânicas como a velocidade propulsiva e perda
de velocidade, e as respostas fisiológicas como a frequência cardíaca e a concentração
sanguínea de lactato. Este estudo foi realizado com 10 estudantes universitários do sexo
masculino, com idades compreendidas entre os 19 e 25 anos (21.70 ± 2.26 anos; massa
corporal: 70.20 ± 15.87 kg; altura: 1.71 ± 0.07 m). Depois da determinação dos valores
de força máxima dinâmica (1RM), cada participante realizou um treino constituído por
3 séries de 6 repetições com a carga correspondente a 80% 1RM, que foi precedido de
diferentes aquecimentos, nomeadamente, i) realização de aquecimento específico; ii)
realização de aquecimento geral seguido de aquecimento específico. O aquecimento
específico consistiu na realização 6 repetições com 40% da carga de treino (i.e., 32%
1RM) seguidas de 6 repetições com 80% da carga de treino (i.e., 64% 1RM). O
aquecimento geral consistiu na realização de 10 minutos de corrida com intensidade
ligeira (=70% da frequência cardíaca máxima de reserva). Verificaram-se diferenças
significativas na velocidade média propulsiva durante a primeira série de treino (0.68 ±
0.07 vs 0.66 ± 0.08m/s, p <0.01) com valores superiores após a realização do
aquecimento geral seguido de específico em relação à realização do aquecimento
específico. Não foram encontradas diferenças significativas nas restantes variáveis
mecânicas analisadas, como a perda velocidade ao longo da série. Adicionalmente, a
realização dos dois protocolos de aquecimento não demonstrou provocar diferentes
respostas na concentração de lactato sanguíneo e de frequência cardíaca pós
aquecimento e pós treino. s resultados parecem assim indicar que a realização do
aquecimento geral seguido de aquecimento específico parece ser benéfica para a
otimização das primeiras repetições do treino de força no exercício de agachamento,
quando comparado com a realização somente do aquecimento específico.
Warming up is a fundamental part of a workout, having as its main objective the preparation for physical exercise. However, studies on the effect of warming up on muscle strength performance are scarce and unclear. The present study aimed to verify and compare the effect of performing a general warm-up followed by a specific warmup or only a specific warm-up in a strength training session in the squat exercise. For this, mechanical responses such as propulsive velocity and loss of velocity, and physiological responses such as heart rate and blood lactate concentration were evaluated. This study was carried out with 10 male university students, aged between 19 and 25 years (21.70 ± 2.26 years; body mass: 70.20 ± 15.87 kg; height: 1.71 ± 0.07 m). After determining the values of maximum dynamic strength (1RM), each participant performed a training consisting of 3 sets of 6 repetitions with a load corresponding to 80% 1RM, which was preceded by different warm-ups, namely, i) a specific warm-up; ii) a general warm-up followed by a specific warm-up. The specific warm-up consisted of 6 repetitions with 40% of the training load (i.e., 32% 1RM) followed by 6 repetitions with 80% of the training load (i.e., 64% 1RM). The general warm-up consisted of 10 minutes of running at a light intensity (=70% of the maximum heart rate reserve). There were significant differences in the mean propulsive velocity during the first training set (0.68 ± 0.07 vs 0.66 ± 0.08m/s, p <0.01) with higher values after performing the general warm-up followed by specific compared with the specific warmup only. No significant differences were found in the remaining mechanical variables analyzed, such as velocity loss throughout the series. Additionally, the performance of the two warm-up protocols did not demonstrate to cause different responses in the blood lactate concentration and heart rate after warm-up and after training. The results thus seem to indicate that performing a general warm-up followed by a specific warmup seems to be beneficial for optimizing the first repetitions of strength training in the squat exercise when compared with performing only the specific warm-up
Warming up is a fundamental part of a workout, having as its main objective the preparation for physical exercise. However, studies on the effect of warming up on muscle strength performance are scarce and unclear. The present study aimed to verify and compare the effect of performing a general warm-up followed by a specific warmup or only a specific warm-up in a strength training session in the squat exercise. For this, mechanical responses such as propulsive velocity and loss of velocity, and physiological responses such as heart rate and blood lactate concentration were evaluated. This study was carried out with 10 male university students, aged between 19 and 25 years (21.70 ± 2.26 years; body mass: 70.20 ± 15.87 kg; height: 1.71 ± 0.07 m). After determining the values of maximum dynamic strength (1RM), each participant performed a training consisting of 3 sets of 6 repetitions with a load corresponding to 80% 1RM, which was preceded by different warm-ups, namely, i) a specific warm-up; ii) a general warm-up followed by a specific warm-up. The specific warm-up consisted of 6 repetitions with 40% of the training load (i.e., 32% 1RM) followed by 6 repetitions with 80% of the training load (i.e., 64% 1RM). The general warm-up consisted of 10 minutes of running at a light intensity (=70% of the maximum heart rate reserve). There were significant differences in the mean propulsive velocity during the first training set (0.68 ± 0.07 vs 0.66 ± 0.08m/s, p <0.01) with higher values after performing the general warm-up followed by specific compared with the specific warmup only. No significant differences were found in the remaining mechanical variables analyzed, such as velocity loss throughout the series. Additionally, the performance of the two warm-up protocols did not demonstrate to cause different responses in the blood lactate concentration and heart rate after warm-up and after training. The results thus seem to indicate that performing a general warm-up followed by a specific warmup seems to be beneficial for optimizing the first repetitions of strength training in the squat exercise when compared with performing only the specific warm-up
Description
Keywords
Agachamento Aquecimento Específico Aquecimento Geral Força Velocidade Propulsiva