Metabolic responses and performance in tennis after caffeine ingestion

2002 ◽  
pp. 78-85
Keyword(s):  
Metabolic Responses ◽  
Caffeine Ingestion ◽  
And Performance

Strategies for Hydration and Energy Provision during Soccer-Specific Exercise

2005 ◽  
Vol 15 (6) ◽  
pp. 625-640 ◽  
Author(s):  
N.D. Clarke ◽  
B. Drust ◽  
D.P.M. MacLaren ◽  
T. Reilly
Keyword(s):  
Fatty Acids ◽  
Plasma Glucose ◽  
Exercise Performance ◽  
Soccer Players ◽  
Metabolic Responses ◽  
Specific Exercise ◽  
Sports Drink ◽  
Specific Protocol ◽  
And Performance ◽  
Experimental Trials

The aim of the present study was to investigate the effect of manipulating the provision of sports drink during soccer-specific exercise on metabolism and performance. Soccer players (N = 12) performed a soccer-specific protocol on three occasions. On two, 7 mL/kg carbohydrate-electrolyte (CHOv) or placebo (PLA) solutions were ingested at 0 and 45 min. On a third, the same total volume of carbohydrate-electrolyte was consumed (CHOf) in smaller volumes at 0, 15, 30, 45, 60, and 75 min. Plasma glucose, glycerol, non-esterified free fatty acids (NEFA), cortisol, and CHO oxidation were not significantly different between CHOv and CHOf (P > 0.05). Sprint power was not significantly affected (P > 0.05) by the experimental trials. This study demonstrates when the total volume of carbohydrate consumed is equal, manipulating the timing and volume of ingestion elicits similar metabolic responses without affecting exercise performance.

THE EFFECT OF CAFFEINE INGESTION ON METABOLISM AND PERFORMANCE DURING PROLONGED CYCLING

2002 ◽  
Vol 34 (5) ◽  
pp. S87
Author(s):  
L C. Eschbach ◽  
S M. Drake ◽  
J C. Boyd ◽  
M T. Whitehead ◽  
M Magal ◽  
...  
Keyword(s):  
Caffeine Ingestion ◽  
And Performance

Effect of Additional Chromium Supplementation on Health Status, Metabolic Responses, and Performance Traits in Periparturient Murrah Buffaloes (Bubalus bubalis)

2014 ◽  
Vol 163 (1-2) ◽  
pp. 132-143 ◽  
Author(s):  
Rijusmita Sarma Deka ◽  
Veena Mani ◽  
Muneendra Kumar ◽  
Shiwajirao Satish Zade ◽  
Ramesh Chand Upadhaya ◽  
...  
Keyword(s):  
Health Status ◽  
Bubalus Bubalis ◽  
Metabolic Responses ◽  
Murrah Buffaloes ◽  
Performance Traits ◽  
And Performance

Metabolic Responses When Different Forms of Carbohydrate Energy Are Consumed during Cycling

1993 ◽  
Vol 3 (4) ◽  
pp. 398-407 ◽  
Author(s):  
Manuel Lugo ◽  
William M. Sherman ◽  
Gregory S. Wimer ◽  
Keith Garleb
Keyword(s):  
Time Trial ◽  
Blood Parameters ◽  
Metabolic Responses ◽  
Moderate Intensity ◽  
Liquid Form ◽  
Total Carbohydrate ◽  
Time Trial Performance ◽  
Cycling Time Trial ◽  
And Performance ◽  
Trial Performance

This study examined the effects of consuming the same amount of carbohydrate in solid form, liquid form, or both on metabolic responses during 2 hrs of cycling at 70% peak VO2and on cycling time-trial performance. Subjects consumed 0.4 g carbohydrate/kg body mass before and every 30 min during exercise. The liquid was a 7% carbohydrate-electrolyte beverage and the solid was a sports bar (1171 kJ) in which 76%, 18%, and 6% of total energy was derived from carbohydrate, fat, and protein, respectively. Blood obtained at baseline, before exercise, and every 30 min was analyzed for glucose, insulin, lactate, hemoglobin, hematocrit, and plasma volume. There were no differences among the treatments for the blood parameters. Total carbohydrate oxidation and time-trial performance were also similar among treatments. Under thermoneutral conditions with equal liquid inges-tion, the metabolic and performance responses are similar when consuming carbohydrate as a liquid, solid, or in combination during prolonged, moderate intensity cycling.

Caffeine Ingestion and Performance

1998 ◽  
Vol 86 (1) ◽  
pp. 66-66
Author(s):  
Bert H. Jacobson
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Caffeine Ingestion ◽  
Central Nervous System Stimulant ◽  
And Performance ◽  
And Task

Caffeine, a strong central nervous system stimulant, may serve as either an ergogenic or a ergolytic agent dependent on dose and task.

EFFECTS OF CAFFEINE INGESTION ON METABOLISM AND PERFORMANCE DURING GRADED EXERCISE

1982 ◽  
Vol 14 (2) ◽  
pp. 176
Author(s):  
Scott K. Powers ◽  
Ronald J. Byrd ◽  
Richard Tulley ◽  
Tom Calender
Keyword(s):  
Caffeine Ingestion ◽  
Graded Exercise ◽  
And Performance

scholarly journals Perceived exertion and performance modulation: effects of caffeine ingestion and subject expectation

2021 ◽  
Vol 61 (9) ◽  
Author(s):  
Paulo H. AZEVEDO ◽  
Matheus G. OLIVEIRA ◽  
Kelvin TANAKA ◽  
Paulo E. PEREIRA ◽  
Gilmar ESTEVES ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Caffeine Ingestion ◽  
And Performance

Corrigenda for vol. 72, Pages 1297-1303

1992 ◽  
Vol 73 (2) ◽  
pp. 786-s-786-s
Keyword(s):  
Steady State ◽  
Metabolic Responses ◽  
Caffeine Ingestion ◽  
Left Hand ◽  
Hand Column

Pages 1297–1303: J. Bangsbo, K. Jacobsen, N. Nordberg, N.J. Christensen, and T. Graham. “Acute and habitual caffeine ingestion and metabolic responses to steady-state exercise.” Page 1301, paragraph 1, left-hand column should read as follows: Prior to the exercise the catecholamines were similar in the NCA and NCB trials. During exercise they were lower in the NCA test (P<0.05), just as they were in the CA test compared with the CB trials (Fig.6).

Caffeine Enhances Cognitive Function and Skill Performance during Simulated Soccer Activity

2009 ◽  
Vol 19 (4) ◽  
pp. 410-423 ◽  
Author(s):  
Andrew Foskett ◽  
Ajmol Ali ◽  
Nicholas Gant
Keyword(s):  
Cognitive Function ◽  
Movement Time ◽  
Soccer Players ◽  
Cognitive Demands ◽  
Double Blind ◽  
Caffeine Ingestion ◽  
Jump Performance ◽  
Skill Performance ◽  
And Performance ◽  
Sporting Performance

There is little evidence regarding the benefits of caffeine ingestion on cognitive function and skillful actions during sporting performance, especially in sports that are multifaceted in their physiological, skill, and cognitive demands.Purpose:To examine the influence of caffeine on performance during simulated soccer activity.Methods:Twelve male soccer players completed two 90-min soccer-specific intermittent running trials interspersed with tests of soccer skill (LSPT). The trials were separated by 7 days and adhered to a randomized crossover design. On each occasion participants ingested 6 mg/kg body mass (BM) of caffeine (CAF) or a placebo (PLA) in a double-blind fashion 60 min before exercise. Movement time, penalties accrued, and total time were recorded for the LSPT. Physiological and performance markers were measured throughout the protocol. Water (3 ml/kg BM) was ingested every 15 min.Results:Participants accrued significantly less penalty time in the CAF trial (9.7 ± 6.6 s vs. PLA 11.6 ± 7.4 s; p = .02), leading to a significantly lower total time in this trial (CAF 51.6 ± 7.7 s vs. PLA 53.9 ± 8.5 s; p = .02). This decrease in penalty time was probably attributable to an increased passing accuracy in the CAF trial (p = .06). Jump height was 2.7% (± 1.1%) higher in the CAF trial (57.1 ± 5.1 cm vs. PLA 55.6 ± 5.1 cm; p = .01).Conclusions:Caffeine ingestion before simulated soccer activity improved players’ passing accuracy and jump performance without any detrimental effects on other performance parameters.

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