Resposta Aguda Do Lactato Sanguíneo a Diferentes Protocolos De Treinamento Com Pesos

Siqueira, Leandro Oliveira da Cruz; Prado, Maria Fernanda do; Simionato, Astor Reis; Sancassani, Andrei; Filho, Dalton Müller Pessôa

doi:10.1590/1517-869220182401173550

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…In the current study, there was a higher lactate concentration in the posttest period, both in the SB and placebo supplementations (Table 3). Previous studies corroborate the data of the present research, demonstrating that the resistance training promotes a significant increase in the blood lactate in the postexercise period (GENTIL et al, 2006;ALVES, 2013;SIQUEIRA et al, 2018). Hence, lactate can be used as a physiological marker for prescribing training in resistance exercises (MEIRELLES; WERLANG-COELHO, 2018).…”

Section: Resultssupporting

confidence: 89%

Acute effect of sodium bicarbonate supplementation by resistant training practices

et al. 2020

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Currently, the use of sodium bicarbonate (SB) as an ergogenic supplement has been linked to improved performance in several high-intensity and short time interval modalities because it is a natural buffer of the body fluids of the human body. This study aimed to evaluate the acute effect of SB supplementation on muscle strength endurance of resistance training practitioners. Crossover clinical trial, placebo-controlled (PL), and single-masked, included 10 trained adult men. The maximum repetition (1RM) and exhaustion tests with 80% 1RM were performed in the extensor chair and direct thread. In all sessions, the volunteers were verbally stimulated, the total maximum repetitions in the exercises and the blood lactate concentration were measured. SB was supplemented at a dose of 0.3 g/kg body mass. Statistical analysis was performed using SPSS version 25.0. The Shapiro–Wilk test was used to evaluate the normality of the data, and the Student’s t-test was used for independent and paired samples. The size of the Cohen’s effect was calculated, and the significance level was set at p<0.05. Comparing the supplements, no significant differences were found in all variables tested. However, when comparing pretest and posttest periods, significant differences were found between lactate concentrations, with considerably large effect sizes (> 1.00). SB supplementation by endurance training practitioners induces blood alkalosis, which reduces fatigue and possibly improves muscle strength endurance. Keywords: resistance exercise, ergogenic, metabolic acidosis, muscular fatigue, performance.

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Section: Resultssupporting

confidence: 89%

Acute effect of sodium bicarbonate supplementation by resistant training practices

et al. 2020

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“…Under these conditions, the rate of lactate production may not be high when compared to protocols involving maximal velocities or heavier loads, however, because of the longer time that exercise can be sustained, the maximum blood lactate concentration may be high, especially in final repetitions. [18][19][20] In addition to the energy metabolism, the fatigue process can affect other components of the neuromuscular system and affect kinetics and kinematics of strength exercise, such as neurais changes (central and peripheral) or biomechanics of the muscle-tendon unit.…”

Section: Discussionmentioning

confidence: 99%

Indicators of Neuromuscular Fatigue in Leg Press Exercise in Men and Women

Barros

Costa

Neto

et al. 2020

Rev Bras Med Esporte

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Introduction Muscle fatigue is characterized by reduced ability to produce maximum strength or power, and may differ between men and women. Changes in velocity of movement during exercise, and in the ability to produce strength after exercise, may help when comparing fatigue in men and women. Objective To analyze the differences between men and women in relation to number of repetitions, kinetics, kinematics and isometric force-time curve performance, and their respective muscle activation in horizontal leg press exercises. Methods Fifteen men and fifteen women underwent isometric force-time curve (Cf-t) and electromyographic (EMG) assessments before and after performing horizontal leg press exercises. The exercises were performed in three sets until voluntary exhaustion, at 70% maximal repetition. During the exercises, kinetic and kinematic variables were obtained by means of two force transducers, a linear position potentiometer and accelerometer adapted for the horizontal leg press and synchronized by a signal conditioning plate. Results The mean propulsive velocity significantly reduced between the first and last repetition of each series, with a similar reduction for men (-12.4 to -29.2%) and women (-29.2 to -35.6%). The same pattern was observed for the other kinetic and kinematic variables. The maximum voluntary contraction and peak force development rate also decreased for both men (-15.1 ± 8.7% and -26.9 ± 21.2%, respectively) and women (-13.9 ± 10.4% and -28.2 ± 11.5%, respectively). Conclusion Based on the different variables used to quantify the effect of fatigue during and after horizontal leg press exercises, the research found practically no differences between men and women. Level of evidence II; Comparative prospective study.

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Resposta Aguda Do Lactato Sanguíneo a Diferentes Protocolos De Treinamento Com Pesos

Cited by 2 publications

References 22 publications

Acute effect of sodium bicarbonate supplementation by resistant training practices

Acute effect of sodium bicarbonate supplementation by resistant training practices

Indicators of Neuromuscular Fatigue in Leg Press Exercise in Men and Women

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