Abstract：
OBJECTIVES:To assess the physiological and performance effects of a 12% carbohydrate-electrolyte beverage consumed at practically applicable time-points (i.e., before each half) throughout simulated soccer match-play. DESIGN:Randomised, counterbalanced, crossover. METHODS:Fed players (n=15) performed 90-min of soccer-specific exercise (including self-paced exercise at the end of each half). Players consumed carbohydrate-electrolyte (CHO; 60g×500ml-1, Na+ 205mg×500ml-1), placebo-electrolyte (PL) or water (Wat) beverages at the end of the warm-up (250ml) and half-time (250ml plus ad-libitum water). Blood was drawn before each half and every 15-min during exercise. Physical (15-m sprinting, countermovement jumps, self-paced distance, acceleration/deceleration count), technical (dribbling) and cognitive (memory, attention, decision-making) performance was assessed. Ratings of perceived exertion (RPE) and abdominal discomfort were measured. RESULTS:Against Wat and PL, CHO increased (all p<0.05) mean accelerations >1.5m·s-2 during self-paced exercise (>+25%) and dribbling speed from 60-min onwards (>+3%). Mean sprinting speed improved (+2.7%) in CHO versus Wat. Blood glucose increased before and during each half in CHO versus PL and Wat (all p<0.05). A 27% decline in glycaemia occurred at 60-min in CHO. RPE was comparable between trials. Cognition reduced post-exercise (p<0.05); this decline was not attenuated by CHO. Abdominal discomfort increased during exercise but was similar between trials. CONCLUSIONS:Using more realistic fluid ingestion timings than have been examined previously, consuming a 12% carbohydrate-electrolyte beverage increased blood glucose, self-paced exercise performance, and improved dribbling speed in the final 30-min of exercise compared to water and placebo. Carbohydrates did not attenuate post-exercise reductions in cognition.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Harper LD,Stevenson EJ,Rollo I,Russell Mdoi
10.1016/j.jsams.2017.04.015subject
Has Abstractpub_date
2017-12-01 00:00:00pages
1123-1129issue
12eissn
1440-2440issn
1878-1861pii
S1440-2440(17)30399-7journal_volume
20pub_type
杂志文章,随机对照试验abstract：OBJECTIVES:To determine the incidence of Achilles tendinopathy in a large group of recreational runners and to determine risk factors for developing AT. DESIGN:Observational cohort study. METHODS:Runners registering for running events (5-42 km) in the Netherlands were eligible for inclusion. Main inclusion criteria w...
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
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更新日期：2017-10-01 00:00:00
abstract：OBJECTIVES:To examine how clinically measured hip motion is related to shoulder biomechanics during the pitching motion. DESIGN:Cross-sectional. METHODS:Bilateral hip rotational range of motion was measured clinically among 34 collegiate baseball pitchers. External rotation torque and maximum horizontal adduction ran...
journal_title：Journal of science and medicine in sport
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abstract：:Organised sports are a popular form of physical activity, but unfortunately, participation can result in injury. Despite this, there have been surprisingly few studies that have reported the population rate of sports injury. Data from the 2005 New South Wales (NSW, Australia) Population Health Survey were analysed to ...
journal_title：Journal of science and medicine in sport
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更新日期：2010-05-01 00:00:00
abstract：UNLABELLED:Previous studies on vibration training have all been based on protocols at different combinations of frequencies and amplitudes without controlling the loading intensity. OBJECTIVES:This study investigated the effect of an 8-week vibration training program, under identical acceleration loads with various fr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
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abstract：:The terminology used for monitoring and promoting physical activity and exercise among health and fitness professionals varies considerably. There is a large array of descriptor terms reported in the literature and used in day-to-day practice and this inconsistency can be confusing for clients and practitioners alike....
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abstract：OBJECTIVES:To examine urban/rural differences in children's independent mobility; associations between mobility licences and children's independent mobility; and potential correlates of mobility licences. DESIGN:Cross-sectional study of 430 primary (48% boys; 72% urban) and 258 secondary schoolchildren (52% boys; 51.6...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2011.03.001
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abstract：:Historically, research into possible causes of exercise-induced fatigue has been found to span numerous scientific disciplines, including medicine, psychology, physiology, neurophysiology, biochemistry, biomechanics, and physics. In order to better understand the mechanisms responsible for fatigue, these disciplines h...
journal_title：Journal of science and medicine in sport
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更新日期：2019-08-01 00:00:00
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pub_type： 杂志文章
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更新日期：2017-11-01 00:00:00
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更新日期：2008-04-01 00:00:00
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journal_title：Journal of science and medicine in sport
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更新日期：2015-05-01 00:00:00
