Effect of a Reduced-CHO Diet on the Rate of Perceived Exertion Curve During an Incremental Test

Ferreira, Guilherme Assunção; Osiecki, Raúl; Lima‐Silva, Adriano Eduardo; Angelis-Pereira, Michel Cardoso de; De-Oliveira, Fernando Roberto

doi:10.1123/ijsnem.2013-0248

Cited by 10 publications

(13 citation statements)

References 31 publications

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“…Therefore, fatigue during SE may be related to other factors such as a better metabolite balance, reduced exercise-induced strain and maintenance of excitation-contraction coupling (8). Additionally, the higher CHO availability can also play a central role by reducing the perceived effort during exercise, thus increasing the fatigue tolerance (8,19,20). …”

Section: Discussionmentioning

confidence: 99%

High-CHO diet increases post-exercise oxygen consumption after a supramaximal exercise bout

Ferreira

Bertuzzi

De-Oliveira

et al. 2016

Braz J Med Biol Res

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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 magnitude (4.6±1.8 L vs 6.2±2.8, respectively, P=0.03) and a greater total O2 consumption throughout the session (exercise+recovery: 11.5±2.5 L vs 17.5±4.2, respectively, P=0.01). These results suggest that a single bout of supramaximal exercise performed with high CHO availability increases both exercise and post-exercise energy expenditure.

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Section: Discussionmentioning

confidence: 99%

High-CHO diet increases post-exercise oxygen consumption after a supramaximal exercise bout

Ferreira

Bertuzzi

De-Oliveira

et al. 2016

Braz J Med Biol Res

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“…Nutritional interventions by handling carbohydrate (CHO) availability has also played a critical role in post-exercise metabolism ( 6 ). Endogenous CHO availability is commonly manipulated as follows: 1) by an 8–12 h fasting period before training, reducing liver but not muscle glycogen ( 7 ); 2) by reducing CHO diet content for a few days, reducing mainly liver glycogen ( 8 ); 3) by performing a pre-exercise before the main exercise to reduce pre-exercise liver and muscle glycogen ( 9 ); 4) or by a combination of two or more of those approaches ( 6 , 9 ). Regardless of the different ways to manipulate CHO stores, some evidence suggests that fat oxidation over the 24-h post-exercise period is increased when exercise is performed with a certain level of CHO depletion ( 5 , 7 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of pre-exercise carbohydrate availability on fat oxidation and energy expenditure after a high-intensity exercise

Ferreira

Felippe

Silva

et al. 2018

Braz J Med Biol Res

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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 499±209 and 677±343 kJ, respectively, P<0.05). Post-exercise EE was similar between low- and high-CHO availability (425±147 and 348±54 kJ, respectively, P>0.05), but post-exercise fat oxidation was significantly higher (P<0.05) in low- (7,830±1,864 mg) than in high-CHO availability (6,264±1,763 mg). The total EE (i.e., exercise EE plus post-exercise EE) was similar between low- and high-CHO availability (924±264 and 1,026±340 kJ, respectively, P>0.05). These results suggest that a single bout of high-intensity exercise performed under low-CHO availability increased post-exercise fat oxidation, and even with shorter exercise duration, both post-exercise EE and total EE were not impaired.

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“…However, in the present study, a strong significant correlation was discovered between the intensity of occurrence of both thresholds when they were expressed by absolute Hr ( = 0.83; p < 0.05) (Figure 2). Fabre et al [7] found the D max rPE at the same intensity as the LT. similarly, Ferreira et al [17] observed that the intensity of occurrence of the D max rPE and the LT was the same, independently of the pre-exercise carbohydrate availability, which suggests that the AnT can be estimated by the rPE scale alone.…”

Section: Discussionmentioning

confidence: 78%

Can we identify the heart rate deflection point and rating of perceived exertion threshold during the Yo-Yo Intermittent Recovery Test level 1 in university basketball players? A pilot study

Conde¹,

Souza²,

Costa³

et al. 2018

Hum Mov.

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Purpose. The aim of the study was to identify the heart rate deflection point (HrDP) and the rating of perceived exertion (rPE) threshold (D max rPE) during the Yo-Yo Intermittent recovery Test level 1 (Yo-Yo Ir1) in university basketball players. Methods. Eleven male university basketball athletes performed two incremental tests, interspersed by seven days, in a random crossover pattern: (1) the treadmill test with the initial velocity of 6 km · h -1 , increments of 1 km · h -1 each 2 minutes, and pauses of 15 seconds between the stages; (2) the Yo-Yo Ir1. Results. During the Yo-Yo Ir1, the HrDP and the D max rPE were identified only in six and seven subjects, respectively. In the treadmill test, the HrDP and the D max rPE were found in 11 and 10 individuals, respectively. Additionally, there were no differences between the velocity of occurrence of the HrDP and the D max rPE recognized in the treadmill test and in the Yo-Yo Ir1 (p > 0.05). Conclusions. The results suggest that if the goal is to determine aerobic capacity by the HrDP and the D max rPE, Yo-Yo Ir1 should not be used. Instead, the treadmill test is a reliable tool.

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Effect of a Reduced-CHO Diet on the Rate of Perceived Exertion Curve During an Incremental Test

Cited by 10 publications

References 31 publications

High-CHO diet increases post-exercise oxygen consumption after a supramaximal exercise bout

High-CHO diet increases post-exercise oxygen consumption after a supramaximal exercise bout

Effect of pre-exercise carbohydrate availability on fat oxidation and energy expenditure after a high-intensity exercise

Can we identify the heart rate deflection point and rating of perceived exertion threshold during the Yo-Yo Intermittent Recovery Test level 1 in university basketball players? A pilot study

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