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| Alves,D.L.; Cruz,R.; Lima-Silva,A.E.; Domingos,P.R.; Bertuzzi,R.; Osiecki,R.; De-Oliveira,F.R.; Lima,J.R.P.. |
| The objective of this study was to verify the agreement between pre-programmed and executed pacing during race walking and whether level of the athletes experience and performance influenced this relationship. Twenty-nine national and international race walkers participated in this study (14 males, 24.0±7.1 years old, and 15 females, 23.3±7.3 years old). Pre-programmed pacing for 10- and 20-km official walking races was self-selected via demonstrative pacing charts prior to races, while executed pacing was analyzed by a specialist investigator via an individual plot of current velocity versus distance. There was no agreement between pre-programmed and executed pacing (P=0.674). There was no association between the ability to match the pre-programmed pace... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerobic evaluation; Performance; Sport; Elite athlete; Physiology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000600608 |
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| Ferreira,G.A.; Felippe,L.C.; Bertuzzi,R.; Bishop,D.J.; Ramos,I.S.; De-Oliveira,F.R.; Lima-Silva,A.E.. |
| We investigated the effect of caffeine ingestion combined with a 2-wk sprint interval training (SIT) on training-induced reductions in body adiposity. Twenty physically-active men ingested either 5 mg/kg of cellulose as a placebo (PLA, n=10) or 5 mg/kg of caffeine (CAF, n=10) 60 min before each SIT session (13×30 s sprint/15 s of rest). Body mass and skinfold thickness were measured pre- and post-training. Energy expenditure was measured at rest, during exercise, and 45 min after exercise in the first SIT session. Body fat was similar between PLA and CAF groups at pre-training (P>0.05). However, there was a significant decrease in body fat after training in the CAF group (−5.9±4.2%, P<0.05) but not in PLA (1.5±8.0%, P>0.05). There was no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: High-intensity interval training Body composition Body fat distribution Health 1; 3; 7-Trimethylxanthine. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001200609 |
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| Ferreira,G.A.; Felippe,L.C.; Silva,R.L.S.; Bertuzzi,R.; De Oliveira,F.R.; Pires,F.O.; Lima-Silva,A.E.. |
| The aim of this study was to test the hypothesis that reduced pre-exercise carbohydrate (CHO) availability potentiates fat oxidation after an exhaustive high-intensity exercise bout. Eight physically active men underwent a high-intensity exercise (∼95% V̇O2max) until exhaustion under low or high pre-exercise CHO availability. The protocol to manipulate pre-exercise CHO availability consisted of a 90-min cycling bout at ∼70% V̇O2max + 6 × 1-min at 125% V̇O2max with 1-min rest, followed by 48 h under a low- (10% CHO, low-CHO availability) or high-CHO diet (80% CHO, high-CHO availability). Time to exhaustion was shorter and energy expenditure (EE) lower during the high-intensity exercise in low- compared to high-CHO availability (8.6±0.8 and 11.4±1.6 min, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Excess post-exercise oxygen consumption; Fat oxidation; Carbohydrate oxidation; Diet manipulation; Aerobic metabolism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000500617 |
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| Silva,R.; Damasceno,M.; Cruz,R.; Silva-Cavalcante,M.D.; Lima-Silva,A.E.; Bishop,D.J.; Bertuzzi,R.. |
| This study analyzed the influence of a 4-week high-intensity interval training on the pacing strategy adopted by runners during a 5-km running trial. Sixteen male recreational long-distance runners were randomly assigned to a control group (CON, n=8) or a high-intensity interval training group (HIIT, n=8). The HIIT group performed high-intensity interval-training twice per week, while the CON group maintained their regular training program. Before and after the training period, the runners performed an incremental exercise test to exhaustion to measure the onset of blood lactate accumulation, maximal oxygen uptake (VO2max), and peak treadmill speed (PTS). A submaximal constant-speed test to measure the running economy (RE) and a 5-km running trial on an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rating of perceived exertion; Running economy; Peak treadmill speed; Maximal oxygen uptake. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200612 |
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| Damasceno,M.V.; Pasqua,L.A.; Lima-Silva,A.E.; Bertuzzi,R.. |
| This study aimed to verify the association between the contribution of energy systems during an incremental exercise test (IET), pacing, and performance during a 10-km running time trial. Thirteen male recreational runners completed an incremental exercise test on a treadmill to determine the respiratory compensation point (RCP), maximal oxygen uptake ( V ˙ O 2 max), peak treadmill speed (PTS), and energy systems contribution; and a 10-km running time trial (T10-km) to determine endurance performance. The fractions of the aerobic (WAER) and glycolytic (WGLYCOL) contributions were calculated for each stage based on the oxygen uptake and the oxygen energy equivalents derived by blood lactate accumulation, respectively. Total metabolic demand (WTOTAL)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerobic metabolism; Running; Maximal oxygen uptake; Anaerobic metabolism; Endurance performance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001101048 |
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| Ferreira,G.A.; Bertuzzi,R.; De-Oliveira,F.R.; Pires,F.O.; Lima-Silva,A.E.. |
| We investigated if carbohydrate (CHO) availability could affect the excess post-exercise oxygen consumption (EPOC) after a single supramaximal exercise bout. Five physically active men cycled at 115% of peak oxygen uptake (V̇O2 peak) until exhaustion with low or high pre-exercise CHO availability. The endogenous CHO stores were manipulated by performing a glycogen-depletion exercise protocol 48 h before the trial, followed by 48 h consuming either a low- (10% CHO) or a high-CHO (80% CHO) diet regime. Compared to the low-CHO diet, the high-CHO diet increased time to exhaustion (3.0±0.6 min vs 4.4±0.6, respectively, P=0.01) and the total O2 consumption during the exercise (6.9±0.9 L and 11.3±2.1, respectively, P=0.01). This was accompanied by a higher EPOC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Excess post-exercise oxygen consumption; EPOC; Supramaximal exercise; Energy expenditure; High-intensity exercise. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016001100703 |
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