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 to complete a strength and conditioning program designed for collegiate athletes. Methods: Participants (n = 7) performed a series of exercises while ...
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 the hyperemic response at two different loads to failure. Methods: Thirty males participated in this double-blinded study. At visit 1, participants were ...
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 endurance runners performed a 21-km time-trial running
on three occasions, separated by at least 28 days. In a randomized cross-over design, they ingested ...
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 this increase,
preventing associated problems for bone. This study investigated the immediate and short-term bone metabolic responses to carbohydrate ...
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, familiarisation trial and two experimental trials, involving a modified version
of the Loughborough Intermittent Shuttle Test (LIST) to simulate a ...
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 present
study was to evaluate young modern pentathlon athletes with respect to body composition, biochemical profile,
and consumption of food and ...
Nutrição e performance esportiva – Artigo 01
Carbohydrate Nutrition and Team Sport Performance
Abstract The common pattern of play in ‘team sports’ is ‘stop and go’, i.e. where players perform repeated bouts of brief high-intensity exercise punctuated by lower intensity activity. Sprints are generally 2–4 s long and recovery between sprints is of variable length. Energy production during brief sprints is derived from the degradation of intra-muscular phosphocreatine and glycogen (anaerobic metabolism). Prolonged periods of multiple sprints drain muscle glycogen stores, leading to a decrease in power
output and a ...
