Search results for "kofeiini"

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Effects of caffeine on neuromuscular function in a non‐fatigued state and during fatiguing exercise

2020

New findings What is the central question of the study? What are the effects of caffeine on neuromuscular function in a non-fatigued state and during fatiguing exercise? What is the main finding and its importance? In a non-fatigued state, caffeine decreased the duration of the silent period evoked by transcranial magnetic stimulation. Caffeine-induced reduction of inhibitory mechanisms in the central nervous system before exercise was associated with an increased performance. Individuals who benefit from caffeine ingestion may experience lower perception of effort during exercise and an accelerated recovery of M-wave amplitude postfatigue. This study elucidates the mechanisms of action of …

MalePhysiologyväsymysmedicine.medical_treatmentliikunta030204 cardiovascular system & hematologyRC1200H-Reflexchemistry.chemical_compound0302 clinical medicineTriceps surae muscletranscranial magnetic stimulationMedicinerasitusMotor NeuronsNutrition and DieteticsMotor CortexGeneral MedicineTranscranial Magnetic Stimulationhermo-lihastoimintamedicine.anatomical_structureNeuromuscular AgentsMuscle FatigueCaffeineMuscle ContractionAdultmedicine.medical_specialtyQP301.H75_Physiology._Sport.Postureperipheral fatiguePlacebo03 medical and health sciencesPhysical medicine and rehabilitationDouble-Blind MethodCaffeinePhysiology (medical)Humansrate of perceived exertionExercisesoleussuorituskykySoleus musclePyramidal tractsbusiness.industryEvoked Potentials MotorQPCrossover studycentral fatigueTranscranial magnetic stimulationchemistrykofeiiniSilent periodbusiness030217 neurology & neurosurgeryExperimental Physiology
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Caffeine as a Gelator

2016

Caffeine (a stimulant) and ethanol (a depressant) may have opposite effects in our body, but under in vitro conditions they can “gel” together. Caffeine, being one of the widely used stimulants, continued to surprise the scientific community with its unprecedented biological, medicinal and physicochemical properties. Here, we disclose the supramolecular self-assembly of anhydrous caffeine in a series of alcoholic and aromatic solvents, rendering a highly entangled microcrystalline network facilitating the encapsulation of the solvents as illustrated using direct imaging, microscopy analysis and NMR studies. Peer reviewed

Polymers and Plasticsmedicine.drug_classSupramolecular chemistryBioengineeringDirect imaging02 engineering and technology010402 general chemistry01 natural sciencessupramolecular chemistrylcsh:ChemistryBiomaterialschemistry.chemical_compoundAnhydrous caffeinelcsh:General. Including alchemySupramolecularlcsh:Inorganic chemistrysupramolekulaarinen kemiamedicineOrganic chemistrylcsh:Scienceta116caffeinegeelitsolid state NMREthanolta114ChemistryCommunicationOrganic Chemistry021001 nanoscience & nanotechnologygelslcsh:QD146-1970104 chemical sciences3. Good healthMicrocrystallinelcsh:QD1-999kofeiiniAromatic solventslcsh:QDepressant0210 nano-technologyCaffeinelcsh:QD1-65Gels Caffeine SupramolecularGels
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