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Yuri Lopes Motoyama
Universidade Federal de São Paulo, Brazil; Universidade Paulista, Brazil

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Journal article
Published: 01 January 2020 in Motriz: Revista de Educação Física
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Aim: This study aimed to verify whether different stage length affects the intensity of the Blood Glucose Threshold (BGT), and the agreement between evaluators for BGT determination. Methods: Fourteen subjects attended the laboratory during the first session to perform anthropometric measures and become familiar with procedures. In the following three sessions, subjects performed an incremental test on the ergometer bicycle and in each test a different protocol was performed in randomized order (1, 3- and 5-min stage) to identify BGT. Three different evaluators determined the BGT. Results: Our data show that the BGT is stage length-dependent (1, 3- and 5-min; P<0.0001). The intraclass correlation coefficient showed that there was a strong correlation among evaluators for all protocols (ICC = 0.8 to 1 min; ICC = 0.8 to 3 min; and ICC 0.9 to 5 min). However, one evaluator determined the BGT at a higher intensity than others. The peak load was lower at long stage length. Conclusion: We concluded that stage length influences the BGT intensity determination. The BGT presents a good agreement among evaluators. However, a minimum of two evaluators is needed for BGT determination. The peak load is affected by stage length.

ACS Style

Gilmar De Jesus Esteves; Paulo Eduardo Pereira; Yuri Lopes Motoyama; Mariam Mian Bouchnak; Paulo Henrique Silva Marques de Azevedo. Blood glucose threshold determination is stage length dependent. Motriz: Revista de Educação Física 2020, 26, 1 .

AMA Style

Gilmar De Jesus Esteves, Paulo Eduardo Pereira, Yuri Lopes Motoyama, Mariam Mian Bouchnak, Paulo Henrique Silva Marques de Azevedo. Blood glucose threshold determination is stage length dependent. Motriz: Revista de Educação Física. 2020; 26 (1):1.

Chicago/Turabian Style

Gilmar De Jesus Esteves; Paulo Eduardo Pereira; Yuri Lopes Motoyama; Mariam Mian Bouchnak; Paulo Henrique Silva Marques de Azevedo. 2020. "Blood glucose threshold determination is stage length dependent." Motriz: Revista de Educação Física 26, no. 1: 1.

Journal article
Published: 01 January 2019 in Motriz: Revista de Educação Física
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Aim: Our purpose was to determine whether Transcranial Direct Current Stimulation (tDCS) improves performance in untrained individuals for supramaximal intermittent exercise. Methods: In a cross-over design, 11 healthy male subjects (26.8 ± 4.6 years) performed four Wingate trials after 20 minutes of anodal or sham tDCS over the left Insular Cortex (IC). For performance indexes, Relative Peak Power (RPP), Relative Average Power (RAP) and Fatigue Index (FI) were computed. Also, a Rating of Perceived Exertion (RPE) and Electromyography (EMG) signal were used to assess central and muscle fatigue development. Results: There was a significant difference over trials on all performance indexes, but there were no significant condition x trial interactions for any of the indexes. RPE increased significantly over trials, but there was no condition x trial interaction. There was no significant difference over trials on EMG for the rectus femoris and vastus medialis muscles; however, EMG decreased over trials for the vastus lateralis muscle. Furthermore, there was no condition x trial interaction on the EMG signal for any of the muscles. Conclusion: Our findings suggest that the anodal tDCS technique has no impact on physical performance, perceived exertion nor muscle fatigue development for supramaximal intermittent exercise.

ACS Style

Gilmar J. Esteves; Yuri L. Motoyama; Paulo E. De A. Pereira; Guilherme H. Elcadi; Rafael Pereira; Paulo Henrique Silva Marques de Azevedo. Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance. Motriz: Revista de Educação Física 2019, 25, 1 .

AMA Style

Gilmar J. Esteves, Yuri L. Motoyama, Paulo E. De A. Pereira, Guilherme H. Elcadi, Rafael Pereira, Paulo Henrique Silva Marques de Azevedo. Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance. Motriz: Revista de Educação Física. 2019; 25 (4):1.

Chicago/Turabian Style

Gilmar J. Esteves; Yuri L. Motoyama; Paulo E. De A. Pereira; Guilherme H. Elcadi; Rafael Pereira; Paulo Henrique Silva Marques de Azevedo. 2019. "Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance." Motriz: Revista de Educação Física 25, no. 4: 1.

Journal article
Published: 01 January 2019 in Motriz: Revista de Educação Física
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Aim: Our purpose was to determine whether Transcranial Direct Current Stimulation (tDCS) improves performance in untrained individuals for supramaximal intermittent exercise. Methods: In a cross-over design, 11 healthy male subjects (26.8 ± 4.6 years) performed four Wingate trials after 20 minutes of anodal or sham tDCS over the left Insular Cortex (IC). For performance indexes, Relative Peak Power (RPP), Relative Average Power (RAP) and Fatigue Index (FI) were computed. Also, a Rating of Perceived Exertion (RPE) and Electromyography (EMG) signal were used to assess central and muscle fatigue development. Results: There was a significant difference over trials on all performance indexes, but there were no significant condition x trial interactions for any of the indexes. RPE increased significantly over trials, but there was no condition x trial interaction. There was no significant difference over trials on EMG for the rectus femoris and vastus medialis muscles; however, EMG decreased over trials for the vastus lateralis muscle. Furthermore, there was no condition x trial interaction on the EMG signal for any of the muscles. Conclusion: Our findings suggest that the anodal tDCS technique has no impact on physical performance, perceived exertion nor muscle fatigue development for supramaximal intermittent exercise.

ACS Style

Gilmar J. Esteves; Yuri L. Motoyama; Paulo E. De A. Pereira; Guilherme H. Elcadi; Rafael Pereira; Paulo Henrique Silva Marques de Azevedo. Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance. Motriz: Revista de Educação Física 2019, 25, 1 .

AMA Style

Gilmar J. Esteves, Yuri L. Motoyama, Paulo E. De A. Pereira, Guilherme H. Elcadi, Rafael Pereira, Paulo Henrique Silva Marques de Azevedo. Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance. Motriz: Revista de Educação Física. 2019; 25 (4):1.

Chicago/Turabian Style

Gilmar J. Esteves; Yuri L. Motoyama; Paulo E. De A. Pereira; Guilherme H. Elcadi; Rafael Pereira; Paulo Henrique Silva Marques de Azevedo. 2019. "Effect of transcranial direct current stimulation on supramaximal intermittent exercise performance." Motriz: Revista de Educação Física 25, no. 4: 1.

Review
Published: 11 October 2017 in Clinical Physiology and Functional Imaging
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Resistance training (RT) for upper body muscle hypertrophy (UBMH) typically entails high volumes of sets per muscle group per training session. The majority of RT regimens does not discriminate between upper and lower body muscle groups, while these groups may respond differently to RT set volumes in terms of maximum skeletal muscle mass gain. Recent studies have examined the effect of different set volumes on the extent of UBMH to formulate optimal RT regimens and to make RT programmes more time-efficient. To analyse the effect of the number of RT sets on the extent of UBMH on the basis of recent literature. The analysis suggests that, statistically, high set volumes (≥3) are not significantly better than low set volumes (<3) in regard to UBMH in untrained subjects. For trained subjects, the literature is lacking in well-designed studies comparing low and high training volumes, as well as analysing upper and lower body muscles separately. Therefore, it is not possible to conclude that high volume of sets offers better results than low volume of sets for UBMH, and vice versa.

ACS Style

Cauê V. La Scala Teixeira; Yuri Motoyama; Paulo Azevedo; Alexandre Lopes Evangelista; James Steele; Danilo Sales Bocalini. Effect of resistance training set volume on upper body muscle hypertrophy: are more sets really better than less? Clinical Physiology and Functional Imaging 2017, 38, 727 -732.

AMA Style

Cauê V. La Scala Teixeira, Yuri Motoyama, Paulo Azevedo, Alexandre Lopes Evangelista, James Steele, Danilo Sales Bocalini. Effect of resistance training set volume on upper body muscle hypertrophy: are more sets really better than less? Clinical Physiology and Functional Imaging. 2017; 38 (5):727-732.

Chicago/Turabian Style

Cauê V. La Scala Teixeira; Yuri Motoyama; Paulo Azevedo; Alexandre Lopes Evangelista; James Steele; Danilo Sales Bocalini. 2017. "Effect of resistance training set volume on upper body muscle hypertrophy: are more sets really better than less?" Clinical Physiology and Functional Imaging 38, no. 5: 727-732.

Journal article
Published: 23 September 2016 in Sports
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Background: The aim of this study was to compare the number of repetitions to volitional failure, the blood lactate concentration, and the perceived exertion to resistance training with and without an airflow-restricting mask. Methods: Eight participants participated in a randomized, counterbalanced, crossover study. Participants were assigned to an airflow-restricting mask group (MASK) or a control group (CONT) and completed five sets of chest presses and parallel squats until failure at 75% one-repetition-maximum test (1RM) with 60 s of rest between sets. Ratings of perceived exertion (RPEs), blood lactate concentrations (Lac−), and total repetitions were taken after the training session. Results: MASK total repetitions were lower than those of the CONT, and (Lac−) and MASK RPEs were higher than those of the CONT in both exercises. Conclusions: We conclude that an airflow-restricting mask in combination with resistance training increase perceptions of exertion and decrease muscular performance and lactate concentrations when compared to resistance training without this accessory. This evidence shows that the airflow-restricting mask may change the central nervous system and stop the exercise beforehand to prevent some biological damage.

ACS Style

Yuri L. Motoyama; Gustavo B. Joel; Paulo E. A. Pereira; Gilmar J. Esteves; Paulo H. S. M. Azevedo. Airflow-Restricting Mask Reduces Acute Performance in Resistance Exercise. Sports 2016, 4, 46 .

AMA Style

Yuri L. Motoyama, Gustavo B. Joel, Paulo E. A. Pereira, Gilmar J. Esteves, Paulo H. S. M. Azevedo. Airflow-Restricting Mask Reduces Acute Performance in Resistance Exercise. Sports. 2016; 4 (4):46.

Chicago/Turabian Style

Yuri L. Motoyama; Gustavo B. Joel; Paulo E. A. Pereira; Gilmar J. Esteves; Paulo H. S. M. Azevedo. 2016. "Airflow-Restricting Mask Reduces Acute Performance in Resistance Exercise." Sports 4, no. 4: 46.

Journal article
Published: 01 May 2016 in Medicine & Science in Sports & Exercise
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ACS Style

Gilmar Esteves; Yuri Motoyama; Domingos Pandeló; Paulo Pereira; Rafael Pereira; Paulo Azevedo. Transcranial Direct Current Stimulation Before Intermittent Exercise Does Not Improve Physical Performance. Medicine & Science in Sports & Exercise 2016, 48, 1041 .

AMA Style

Gilmar Esteves, Yuri Motoyama, Domingos Pandeló, Paulo Pereira, Rafael Pereira, Paulo Azevedo. Transcranial Direct Current Stimulation Before Intermittent Exercise Does Not Improve Physical Performance. Medicine & Science in Sports & Exercise. 2016; 48 ():1041.

Chicago/Turabian Style

Gilmar Esteves; Yuri Motoyama; Domingos Pandeló; Paulo Pereira; Rafael Pereira; Paulo Azevedo. 2016. "Transcranial Direct Current Stimulation Before Intermittent Exercise Does Not Improve Physical Performance." Medicine & Science in Sports & Exercise 48, no. : 1041.

Journal article
Published: 27 May 2014 in Revista Brasileira de Cineantropometria & Desempenho Humano
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DOI: http://dx.doi.org/10.5007/1980-0037.2014v16n4p419The aim of this study was to compare the velocities found in the protocols used to measure the indirect individual anaerobic threshold (IATind), glucose threshold (GT) and critical velocity (CV) with the gold standard, the maximum lactate steady state (MLSS) protocol. Fourteen physically active young adults (23±3.1 years; 72±10.97 kg; 176±7 cm; 21±5.36% body fat) performed a 3000-m track running test to determine IATind using the prediction equation and an incremental test on a treadmill to determine GT. The CV was identified by linear regression of the distance-time relationship based on 3000-m and 500-m running performance. The MLSS was identified using two to five tests on different days to identify the intensity at which there was no increase in blood lactate concentration greater than 1 mmol/L between the 10th and 30th minute. A significant difference was observed between mean CV and MLSS (P≤0.05) and there was a high correlation between MLSS and IATind (R2=0.82; P≤0.01) and between MLSS and GT (R2=0.72; P≤0.01). The Bland-Altman method showed agreement between MLSS and IATind [mean difference -0.24 (confidence interval -1.72 to 1.24) km/h] and between MLSS and GT [0.21 (-1.26 to 1.29) km/h]. We conclude that the IATind and GT can predict MLSS velocity with good accuracy, thus making the identification of MLSS practical and efficient to prescribe adequate intensities of aerobic exercise.

ACS Style

Yuri Lopes Motoyama; Paulo Eduardo De Assis Pereira; Gilmar De Jesus Esteves; João Marcos Pereira Duarte; Vitor Karlos Piubelli Carrara; Gustavo Mello Rissato; Paulo Henrique Silva Marques Azevedo. Métodos alternativos para estimar a velocidade da máxima fase estável de lactato em adultos jovens fisicamente ativos. Revista Brasileira de Cineantropometria & Desempenho Humano 2014, 16, 419-426 .

AMA Style

Yuri Lopes Motoyama, Paulo Eduardo De Assis Pereira, Gilmar De Jesus Esteves, João Marcos Pereira Duarte, Vitor Karlos Piubelli Carrara, Gustavo Mello Rissato, Paulo Henrique Silva Marques Azevedo. Métodos alternativos para estimar a velocidade da máxima fase estável de lactato em adultos jovens fisicamente ativos. Revista Brasileira de Cineantropometria & Desempenho Humano. 2014; 16 (4):419-426.

Chicago/Turabian Style

Yuri Lopes Motoyama; Paulo Eduardo De Assis Pereira; Gilmar De Jesus Esteves; João Marcos Pereira Duarte; Vitor Karlos Piubelli Carrara; Gustavo Mello Rissato; Paulo Henrique Silva Marques Azevedo. 2014. "Métodos alternativos para estimar a velocidade da máxima fase estável de lactato em adultos jovens fisicamente ativos." Revista Brasileira de Cineantropometria & Desempenho Humano 16, no. 4: 419-426.