Nutrição e performance esportiva – Artigo 09

Effects of two pre-workout supplements on concentric and eccentric force production during lower body resistance exercise in males and females: a counterbalanced, double-blind, placebo-controlled trial Abstract Background: Pre-workout supplements purportedly enhance feelings of energy, reduce fatigue and improve exercise performance. The purpose of this study was to examine the performance effects of caffeinated and noncaffeinated multi-ingr...

Nutrição e performance esportiva – Artigo 08

Effects of Potassium Bicarbonate Supplements on Circulating microRNA Expression Several studies suggest that neutralizing acid load in the diet with alkali had favorable effects on intermediate markers of musculoskeletal health. We examined whether alkali supplementation with potassium bicarbonate [(KHCO3); 81 mmol/d; n = 12] vs placebo (n = 12) for 84 days altered serum microRNAs, potential biomarkers associated with innumerable biological ...

Nutrição e performance esportiva – Artigo 07

Effects of acute carbohydrate ingestion on anaerobic exercise performance Abstract Background: Carbohydrate (CHO) supplementation during endurance exercises has been shown to increase performance, but there is limited research with CHO supplementation during strength and conditioning exercises. Therefore, the purpose of this study was to examine the effects of various levels of CHO ingestion during acute testing sessions requiring participants ...

Nutrição e performance esportiva – Artigo 06

Effects of a pre-workout supplement on hyperemia following leg extension resistance exercise to failure with different resistance loads Abstract Background: We sought to determine if a pre-workout supplement (PWS), containing multiple ingredients thought to enhance blood flow, increases hyperemia associated with resistance training compared to placebo (PBO). Given the potential interaction with training loads/time-under-tension, we evaluated ...

Nutrição e performance esportiva – Artigo 05

Effect of protein and carbohydrate solutions on running performance and cognitive function in female recreational runners Abstract This study compared the effects of a carbohydrate–electrolyte–protein solution (CEPS, 2% protein plus 4% carbohydrate), carbohydrate–electrolyte solution (CES, 6% carbohydrate), and noncaloric sweetened placebo (PLA) on both 21-km running performance and cognitive function. Eleven female recreational endura...

Nutrição e performance esportiva – Artigo 04

Effect of carbohydrate feeding on the bone metabolic response to running Sale C, Varley I, Jones TW, James RM, Tang JC, Fraser WD, Greeves JP. Effect of carbohydrate feeding on the bone metabolic response to running. J Appl Physiol 119: 824 – 830, 2015. First published August 6, 2015; doi:10.1152/japplphysiol.00241.2015.— Bone resorption is increased after running, with no change in bone formation. Feeding during exercise might attenuate ...

Nutrição e performance esportiva – Artigo 03

Ecologically Valid Carbohydrate Intake during Soccer-Specific Exercise Does Not Affect Running Performance in a Fed State Abstract: This study assessed the effect of carbohydrate intake on self-selected soccer-specific runnin performance. Sixteen male soccer players (age 23 ± 4 years; body mass 76.9 ± 7.2 kg; predicted VO2max = 54.2 ± 2.9 mL·kg−1 ·min−1; soccer experience 13 ± 4 years) completed a progressive multistage fitness test, ...

Nutrição e performance esportiva – Artigo 02

Critical evaluation of food intake and energy balance in young modern pentathlon athletes: a cross-sectional study Abstract Background: Modern pentathlon comprises five sports: fencing, swimming, equestrian jumping, and a combined event of pistol shooting and running. Despite the expected high energy demand of this sport, there are few studies that provide support for the nutritional recommendations for pentathletes. The purpose of the ...