When we increase running speed, there is an increase in carbon dioxide (CO2) production by the body as a result of increased metabolism and breathing. During cellular respiration, the body burns glucose to produce energy, releasing CO2 as a byproduct. The more intensively the body burns glucose, the more CO2 is produced. Furthermore, during running, the body needs more oxygen to fuel the accelerated metabolism. The body obtains oxygen from the lungs and transports it to cells via the blood. When we run, we increase breathing to meet the body's oxygen demand. This means that breathing also helps to release CO2.
Caffeine can enhance athletic performance. Its impact, however, is influenced by the speed at which it is metabolized in the body, linked to the CYP1A2 gene. Quick metabolism of caffeine leads to improved performance, whereas slow metabolism results in decreased performance compared to not consuming caffeine. Thus, a tailored approach to prescribing caffeine is crucial!