Kaffeewirkung bei sportlichen �bungen

Eichler, Oskar

doi:10.1007/bf00248589

Cited by 2 publications

(2 citation statements)

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“…File et al [1982] reported improvements with 125 mg caffeine for a digit-symbol substitution test lasting 90s. Eichlcr et al [1949] reported improvements after 250 mg of caffeine for different types of acute physical performance. Although experiments involving long-last ing performances usually reported caffeinic improve ments for the later test periods only, some of them also observed improvements for the initial test periods [Krueger cl al.. 1979: Regina cl al.. 1974,…”

Section: Discussionmentioning

confidence: 99%

Effect of Coffee on the Speed of Subject-Paced Information Processing

Bättig¹,

Buzzi²

1986

Neuropsychobiology

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A continuously subject-paced and monetarily reinforced information-processing task was used to test whether caffeine might stimulate performance beyond the ceiling imposed by fatigue. A 3 × 2 design was adopted with the three doses 0, 150, and 450 mg caffeine and with decaffeinated coffee and fruit juice as vehicles. Two groups of 10 subjects selected to represent extremes on the extraversion-introversion scale participated in the experiment. The results revealed no differences between the two groups nor between the two drug vehicles, but caffeine at both dose levels improved performance significantly. Fatigue-induced performance decrements across the sessions reached significance, but no interaction was obtained between fatigue and drug action, supporting the view that caffeine can improve performance beyond a mere restoration of fatigue.

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Section: Discussionmentioning

confidence: 99%

Effect of Coffee on the Speed of Subject-Paced Information Processing

Bättig¹,

Buzzi²

1986

Neuropsychobiology

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“…Regular coffee (containing 250mg of caffeine) and decaffeinated coffee, administered in a double-blind study, improved to the same degree long jump, shot put, and 100meter dash performance (60), suggesting that the positive effect of coffee on sports activity may be partly related to other constituents of coffee than to caffeine or could rather be mostly subjective.…”

Section: Effects Of Coffee and Caffeine On Athletic Performancementioning

confidence: 91%

Caffeine and Sports Activity: A Review

Nehlig

Debry

1994

Int J Sports Med

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Potential ergogenic effects of caffeine at the cellular level are mediated by three main mechanisms of action which are: intracellular mobilization of calcium from sarcoplasmic reticulum and increased sensitivity of myofibrilles to calcium; inhibition of phosphodiesterases leading to an increase in cyclic-3',5'-adenosine monophosphate (cAMP) in various tissues including muscle; and the antagonism at the level of adenosine receptors, mainly in the central nervous system. The main mechanism of action of caffeine at the level usually encountered in vivo after the ingestion of a few cups of coffee is undoubtedly linked to the antagonism of caffeine at adenosine receptors. Caffeine also increases production of plasma catecholamines that allow the body to adapt to the stress created by physical exercise. Catecholamine production increases probably, in turn, the availability of free fatty acids as muscle substrates during work, thus allowing glycogen sparing. Caffeine is able to increase muscle contractility, has no ergogenic effect on intense exercise of brief duration, but can improve the time before exhaustion. Caffeine is also able to improve physical performance and endurance during prolonged activity of submaximal intensity. Glycogen sparing resulting from increased rate of lipolysis could contribute to the prolonged time to exhaustion. Finally, tolerance to the methylxanthine should be taken into account when an athlete wants to draw any benefit from caffeine absorption prior to a sports event.

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Kaffeewirkung bei sportlichen �bungen

Cited by 2 publications

References 1 publication

Effect of Coffee on the Speed of Subject-Paced Information Processing

Effect of Coffee on the Speed of Subject-Paced Information Processing

Caffeine and Sports Activity: A Review

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