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4. Heavy-intensity priming exercise extends the V̇o2max plateau and increases peak-power output during ramp-incremental exercise.

Author

Marinari, Gabriele, Iannetta, Danilo, Holash, Robert John, Zagatto, Alessandro M., Keir, Daniel A., and Murias, Juan M.

Subjects
AEROBIC capacity, STIMULUS & response (Psychology), ADULTS, EXERCISE intensity
Abstract

This study investigated whether a heavy-intensity priming exercise precisely prescribed within the heavy-intensity domain would lead to a greater peak-power output (POpeak) and a longer maximal oxygen uptake (V̇ o 2max) plateau. Twelve recreationally active adults participated in this study. Two visits were required: 1) a step-ramp-step test [ramp-incremental (RI) control], and 2) an RI test preceded by a priming exercise within the heavy-intensity domain (RI primed). A piecewise equation was used to quantify the V̇ o 2 plateau duration (V̇ o 2plateau-time). The mean response time (MRT) was computed during the RI control condition. The delta (Δ) V̇ o 2 slope (S; mL·min−1·W−1) and V̇ o 2-Y intercept (Y; mL·min−1) within the moderate-intensity domain between conditions (RI primed minus RI control) were also assessed using a novel graphical analysis. V̇ o 2plateau-time (P = 0.001; d = 1.27) and POpeak (P = 0.003; d = 1.08) were all greater in the RI primed. MRT (P < 0.001; d = 2.45) was shorter in the RI primed compared with the RI control. A larger ΔV̇ o 2plateau-time was correlated with a larger ΔMRT between conditions (r = –0.79; P = 0.002). This study demonstrated that heavy-intensity priming exercise lengthened the V̇ o 2plateau-time and increased POpeak. The overall faster RI-V̇ o 2 responses seem to be responsible for the longer V̇ o 2plateau-time. Specifically, a shorter MRT, but not changes in RI-V̇ o 2-slopes, was associated with a longer V̇ o 2plateau-time following priming exercise. NEW & NOTEWORTHY: It remains unclear whether priming exercise extends the maximal oxygen uptake (V̇ o 2max) plateau and increases peak-power output (POpeak) during ramp-incremental (RI) tests. This study demonstrates that a priming exercise, precisely prescribed within the heavy-intensity domain, extends the plateau at V̇ o 2max and leads to a greater POpeak. Specifically, the extended V̇ o 2max plateau was associated with accelerated RI-V̇ o 2 responses. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Effects of Drop Jumps on 1000-m Performance Time and Pacing in Elite Male and Female Endurance Runners.

Author

Boullosa, Daniel, Abad, César C.C., Reis, Valter P., Fernandes, Victor, Castilho, Claudio, Candido, Luis, Zagatto, Alessandro M., Pereira, Lucas A., and Loturco, Irineu

Subjects
ATHLETIC ability, JUMPING, LACTATES, MUSCLE strength, RUNNING, TIME, PLYOMETRICS, DESCRIPTIVE statistics, CONTRAST training (Physical training & conditioning)
Abstract

Purpose: To evaluate the effect of drop jumps (DJs) on performance time and pacing in a field test (ie, 1000 m) commonly used to evaluate endurance runners and to evaluate running and jumping performance in male and female athletes separately. Methods: Twenty elite endurance runners (male, n = 10, 27.8 [7.0] y, 62.3 [5.2] kg; female, n = 10, 25.9 [5.3] y, 51.7 [4.1] kg) competing in middle- and long-distance events participated in this study. After determination of the box height associated with the best reactive strength index, athletes randomly performed a warm-up with or without the inclusion of 5 DJs with the highest reactive strength index prior to a 1000-m track test. Performance time and pacing (250-m splits) were determined. Countermovement-jump heights at different time points and blood lactate concentration after running tests were also recorded. Results: A "possible" faster 1000-m time (162.4 vs 165.3 s) with a "very likely" faster first split (38.8 vs 40.3 s) was observed in male athletes in the DJ condition. In contrast, female athletes showed a "possible" slower running time (186.8 vs 184.8 s) and a "likely" greater blood lactate concentration after the 1000-m test in the DJ condition. Male and female athletes presented greater countermovement-jump performances after warm-up and running tests in both conditions. Conclusions: The inclusion of 5 DJs with the height associated with the best reactive strength index induced a "possible" improvement in 1000-m performance time in elite male endurance runners. The current protocol should be avoided in female athletes. [ABSTRACT FROM AUTHOR]

Published
2020
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19. Does Beta-Alanine Supplementation Potentiate Muscle Performance Following 6 Weeks of Blood Flow Restriction or Traditional Resistance Training?

Author

DE ARAUJO PESSÔA, KASSIANA, MICHAEL CHOLEWA, JASON, SOUSASILVA, RAYSSA, ZHI XIA, ZAGATTO, ALESSANDRO M., LANCHA-JR, ANTONIO HERBERT, LAUVER, JAKOB D., EDUARDO ROSSI, FABRÍCIO, and EIDY ZANCHI, NELO

Subjects
GABA transaminase, MUSCLE strength, BLOOD flow, RESISTANCE training, PHYSICAL fitness
Abstract

We aimed to compare the effects of beta-alanine on Traditional Resistance Training (TRAD) or Blood Flow Restriction Training (BFR). Methods: 19 subjects were randomly allocated to a Placebo (n = 10) or beta-alanine (n = 9) group. Subjects from both groups were trained unilaterally (unilateral arm curl) for six weeks, and each arm was trained using a different paradigm (BFR or TRAD). One repetition maximum (1RM) test measurements were performed before and after the strength training program. Work output was accessed as the total weight lifted (repetitions × weight lifted × sets) for the entire strength training program. Results: 1RM or total weight lifted was not increased by beta-alanine supplementation. However, the TRAD-trained arm showed a significantly increased 1RM and total weight lifted compared to the BFR arm (p < 0.05). Conclusion: We conclude that in the short-term (6 weeks) and following the current experimental conditions, beta-alanine does not benefit BFR or TRAD in terms of total weight lifted (volume of training) or maximal strength (1RM). [ABSTRACT FROM AUTHOR]

Published
2023
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21. Additional file 1 of Drop jumps versus sled towing and their effects on repeated sprint ability in young basketball players

Author

Zagatto, Alessandro M., Claus, Gabriel M., Dutra, Yago M., de Poli, Rodrigo A., Lopes, Vithor H. F., Goodall, Stuart, Loturco, Irineu, and Boullosa, Daniel

Abstract

Additional file 1. Supplementary Material: Supplementary Table 1. Outcomes of optimal recovery interval related to conditioning activity drop jumps. Supplementary Table 2. Outcomes of optimal recovery interval related to conditioning activity heavy sled towing.

Published
2022
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26. Full Body Photobiomodulation Therapy to Induce Faster Muscle Recovery in Water Polo Athletes: Preliminary Results

Author

Zagatto, Alessandro M., primary, Dutra, Yago M., additional, Lira, Fabio Santos, additional, Antunes, Barbara M., additional, Faustini, Julia B., additional, Malta, Elvis de S., additional, Lopes, Vithor H.F., additional, de Poli, Rodrigo A.B., additional, Brisola, Gabriel M.P., additional, dos Santos, Giovanny V., additional, Rodrigues, Fabio M., additional, and Ferraresi, Cleber, additional

Published
2020
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30. Impacts of high‐intensity exercise on the metabolomics profile of human skeletal muscle tissue.

Author

Zagatto, Alessandro M., Bishop, David J., Antunes, Barbara Moura, Beck, Wladimir R., Malta, Elvis S., de Poli, Rodrigo A.B., Cavaglieri, Claudia R., Chacon‐Mikahil, Mara Patrícia T., and Castro, Alex

Subjects
*AEROBIC capacity, *EXPERIMENTAL design, *SKELETAL muscle, *CARNITINE, *METABOLOMICS, *METHANOL, *EXERCISE physiology, *BLOOD sugar, *CYCLING, *CELLULAR signal transduction, *MITOCHONDRIA, *PHOSPHOCREATINE, *LACTATES, *DESCRIPTIVE statistics, *HIGH-intensity interval training, *AMINO acids, *SPECTRUM analysis, *FATTY acids, *OXIDATION-reduction reaction
Abstract

The study aimed to identify and quantify the metabolites profile and metabolic pathways in human muscle tissue engaged during exhaustive high‐intensity cycling exercise. Seven healthy physically active men performed a graded exercise test and an exhaustive supramaximal effort at 115% of maximal aerobic power with muscles biopsies performed in rest and immediately after exhaustion for quantifying of muscle metabolites changes by 1H‐NMR spectroscopy. The time until exhaustion (tlim) recorded was 224.7 ± 35.5 s whereas the muscle pH at exhaustion was 6.48 ± 0.05. A total of 54 metabolites were identified and quantified. The most enriched and impacted pathways included: beta oxidation of very long chain fatty acids, mitochondrial electron transport chain, alanine aspartate, and glutamate metabolism, citric acid cycle, arginine biosynthesis, propanoate metabolism, threonine and 2‐oxobutanoate degradation and pyruvate metabolism. In addition, the muscle concentrations in Post exercise, compared to Pre increased significantly (p < 0.0398) for fumarate (42.0%), succinate (101.2%), glucose (249.7%), lactate (122.8%), O‐acetylcarnitine (164.7%), glycerol (79.3%), AMP (288.2%), 2‐oxobutyrate (121.0%), and methanol (58.5%), whereas decreased significantly (p < 0.010) for creatine phosphate (−70.2%), ADP (−56.5%), carnitine (−33.5%), and glutamate (−42.3%). Only the succinate was significantly correlated with tlim (r = −0.76; p = 0.0497). Besides the classical expected contribution of glycolytic and phosphagen energetic pathways, it was demonstrated that the high‐intensity exercise is also associated with pathways indicatives of amino acid and fatty acid oxidation metabolisms, highlighting the inverse relation between changes in the intramuscular succinate levels and tlim. [ABSTRACT FROM AUTHOR]

Published
2022
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31. Effect of Endurance Training on The Lactate and Glucose Minimum Intensities

Author

Junior, Pedro B., de Andrade, Vitor L., Campos, Eduardo Z., Kalva-Filho, Carlos A., Zagatto, Alessandro M., de Araújo, Gustavo G., and Papoti, Marcelo

Subjects
Research Article
Abstract

Due to the controversy about the sensitive of lactate minimum intensity (LMI) to training and the need to develop other tool for aerobic fitness evaluation, the purpose of this study was to analyze the sensitivity of glucose minimum intensity (GMI) and LMI to endurance training. Eight trained male cyclists (21.4 ± 1.9 years, 67.6 ± 7.5 kg and 1.72 ± 0.10 m) were evaluated twice, before and after 12 weeks of training. GMI and LMI were calculated, respectively, by the lowest blood glucose and lactate values attained during an incremental test performed after a hyperlactemia induction, and VO2max was determined during standard incremental effort. The training was prescribed in three different zones and controlled by heart rate (HR). The training distribution was equivalent to 59.7%, 25.0% and 15.3% below, at and above anaerobic threshold HR respectively. The anaerobic threshold evaluated by GMI and LMI improvement 9.89 ± 4.35% and 10.28 ± 9.89 respectively, after training, but the VO2max 2.52 ± 1.81%. No differences were found between GMI and LMI in pre (218.2 ± 22.1 vs 215.0 ± 18.6 W) and post (240.6 ± 22.9 vs 237.5 ± 18.8 W) training situations. LMI and GMI were sensitive to 12-week aerobic training in cyclist; thus, both protocols can be used to assess aerobic adaptation, athletes diagnostic and prescribe training.

Published
2018

41. Lower Arm Muscle Activation during Indirect- Localized Vibration : The Influence of Skill Levels When Applying Different Acceleration Loads

Author

Padulo, Johnny, Di Giminiani, Ricardo, Dello Iacono, Antonio, Zagatto, Alessandro M., Migliaccio, Gian M., Grgantov, Zoran, and Adrigo, Luca P.

Subjects
musclecontraction, motorbehavior, fatigue, vibration, sports
Abstract

We investigated the electromyographic response to synchronous indirect-localized vibration interventions in international and national table tennis players. Twentysix male table tennis players, in a standing position, underwent firstly an upper arms maximal voluntary contraction and thereafter two different 30-s vibration interventions in random order: high acceleration load (peak acceleration = 12.8 g, frequency = 40 Hz ; peak-to-peak displacement = 4.0 mm), and low acceleration load (peak acceleration = 7.2 g, frequency = 30 Hz, peak-to-peak displacement = 4.0 mm). Surface electromyography root mean square from brachioradialis, extensor digitorum, flexor carpi radialis, and flexor digitorum superficialis recorded during the two vibration interventions was normalized to the maximal voluntary contraction recording. Normalized surface electromyography root mean square was higher in international table tennis players with respect to national ones in all the interactions between muscles and vibration conditions (P < 0.05), with the exception of flexor carpi radialis (at low acceleration load. P > 0.05). The difference in normalized surface electromyography root mean square between international table tennis players and national ones increased in all the muscles with high acceleration load (P < 0.05), with the exception of flexor digitorum superficialis (P > 0.05). The muscle activation during indirect-localized vibration seems to be both skill level and muscle dependent. These results can optimize the training intervention in table tennis players when applying indirect-localized vibration to lower arm muscles. Future investigations should discriminate between middle- and long-term adaptations in response to specific vibration loads.

Published
2016

45. Abstracts from ISSN Brazil

Author

Heibel, André Barroso, primary, Perim, Pedro Henrique Lopes, additional, Saunders, Bryan, additional, Heibel, André Barroso, additional, Abrantes, Déborah Michelly, additional, Rauber, Caíque Fagundes, additional, Reis, Caio Eduardo Gonçalves, additional, Santana, Jeferson Oliveira, additional, Madureira, Diana, additional, de França, Elias, additional, Yoshioka, Caroline Ayme Fernandes, additional, Lamolha, Marco Aurélio, additional, Zocoler, Cesar Augustus, additional, e Silva, Paulo Roberto Sousa, additional, Caperuto, Erico Chagas, additional, Goston, Janaína Lavalli, additional, dos Santos, Bárbara Ferreira, additional, daSilva, Francine Rafaela Fernandes, additional, de Carvalho, Lívia Muniz Cirino, additional, Ramos, Sabrina Alves, additional, Santana, Jeferson O., additional, Gonçalves, Leandro, additional, Santos, Ronaldo V. T., additional, Sanches, Iris Callado, additional, Ramos, Carla C., additional, Caperuto, e Érico Chagas, additional, Romeiro, Caroline, additional, Pires, Gabrielle Goncalves, additional, Correia, Vitória C. A. R. A., additional, Macedo, Maria Cecilia F., additional, Franco, Octavio L., additional, Martins, Breno, additional, Marangon, Antonio Felipe Correa, additional, Paulista, Hugo, additional, Norte, Pablo Almeida Macedo, additional, Da Fonseca, Danielle Almeida, additional, De Souza, Debora Teixeira, additional, Alves, Ana Gabriella Pereira, additional, Franco, Lana Pacheco, additional, Silva, Maria Sebastiana, additional, Gualano, Bruno, additional, Bella, Yanesko, additional, Lira, Fabio Santos, additional, Fukushima, Andre, additional, Burton, Alex, additional, de Azevedo, Artur P., additional, Fogaça, Lorruama J., additional, Santos, Silvia L., additional, Mota, João F., additional, Pimentel, Gustavo D., additional, Figueiredo, Nayra, additional, Queiroz, Marcela, additional, Santos, Jéssica, additional, Inoue, Daniela S., additional, Panissa, Valéria L. G., additional, Monteiro, Paula Alves, additional, Gerosa-Neto, José, additional, Rossi, Fabrício E., additional, Caperuto, Erico C., additional, Cholewa, Jason M., additional, Zagatto, Alessandro M., additional, Lira, Fábio S., additional, and Loureiro, Laís Monteiro Rodrigues, additional

Published
2017
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46. Physiological and cytokine response to acute exercise under hypoxic conditions: a pilot study

Author

Lira, Fábio S., primary, Lemos, Valdir A., additional, Bittar, Irene G., additional, Caris, Aline V., additional, Ronaldo, V., additional, Santos, dos, additional, Tufik, Sergio, additional, Zagatto, Alessandro M., additional, Claudio, T., additional, Souza, de, additional, Pimentel, Gustavo D., additional, Marco, T., additional, and Mello, De, additional

Published
2017
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49. Futsal match-related fatigue affects running performance and neuromuscular parameters but not finishing kick speed or accuracy

Author

Milioni, Fabio, Vieira, Luiz H P, Barbieri, Ricardo A, Zagatto, Alessandro M, Nordsborg, Nikolai Baastrup, Barbieri, Fabio A, Dos-Santos, Júlio W, Santiago, Paulo R P, Papoti, Marcelo, Milioni, Fabio, Vieira, Luiz H P, Barbieri, Ricardo A, Zagatto, Alessandro M, Nordsborg, Nikolai Baastrup, Barbieri, Fabio A, Dos-Santos, Júlio W, Santiago, Paulo R P, and Papoti, Marcelo

Abstract

Purpose: The aim of the present study was to investigate the influence of futsal match-related fatigue on running performance, neuromuscular variables, and finishing kick speed and accuracy. Methods: Ten professional futsal players participated in the study (age: 22.2 ± 2.5 years) and initially performed an incremental protocol to determine maximum oxygen uptake ([Formula: see text]: 50.6 ± 4.9 mL.kg(-1).min(-1)). Next, simulated games were performed, in four periods of 10 min during which heart rate and blood lactate concentration were monitored. The entire games were video recorded for subsequent automatic tracking. Before and immediately after the simulated game, neuromuscular function was measured by maximal isometric force of knee extension, voluntary activation using twitch interpolation technique, and electromyographic activity. Before, at half time, and immediately after the simulated game, the athletes also performed a set of finishing kicks for ball speed and accuracy measurements. Results: Total distance covered (1st half: 1986.6 ± 74.4 m; 2nd half: 1856.0 ± 129.7 m, P = 0.00) and distance covered per minute (1st half: 103.2 ± 4.4 m.min(-1); 2nd half: 96.4 ± 7.5 m.min(-1), P = 0.00) demonstrated significant declines during the simulated game, as well as maximal isometric force of knee extension (Before: 840.2 ± 66.2 N; After: 751.6 ± 114.3 N, P = 0.04) and voluntary activation (Before: 85.9 ± 7.5%; After: 74.1 ± 12.3%, P = 0.04), however ball speed and accuracy during the finishing kicks were not significantly affected. Conclusion: Therefore, we conclude that despite the decline in running performance and neuromuscular variables presenting an important manifestation of central fatigue, this condition apparently does not affect the speed and accuracy of finishing kicks.

Published
2016

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