There is a question: where does the energy in children come from?
“What does it mean whence? They do not work, and generally do not know the burdens of adulthood, “you will say. And you will be right in the philosophical, but not in the physiological sense. As for the latter, a recent study showed that the whole thing is in the muscles . They in children, as it turned out, tend to “tire” more slowly than adults.
In fact, the child’s ability to remain active (and sometimes even overactive) throughout the day surprises even scientists. After all, they are well aware, for example, that children have shorter limbs, so that they have to make more moves during the movement and, as a consequence, spend more energy. The child’s body is also less able to use the energy recovery system coming from the tendons, so they can not fully use this “built-in function” to make walking less energy-intensive.
But why even after a day in the amusement park they are still able to run around the apartmentwhile their parents are literally lying on their feet? One possible explanation for this magical endurance, says Good Sports, can be the use of different energy paths.
Anaerobic (oxygen-independent) pathways produce large amounts of energy at once, but, as a rule, contribute to rapid fatigue. For example, sprinters rely on anaerobic metabolism to run for short distances. At the same time, aerobic (oxygen-dependent) paths produce energy more slowly, but allow us to work for many hours without muscle disconnection, as do marathon runners .
Previous studies have shown that children seem to get more energy from the aerobic ways than adults, which minimizes the use of anaerobic pathways and the fatigue they cause. These benefits are probably due to the fact that the child’s body has more slow muscle fibers, in which enzymes that lead to the use of aerobic rather than anaerobic pathways are more active.
But this, however, is not all. Data collected by scientists in the recovery process after performing the exercises , also showed striking results. The rate at which oxygen consumption decreased after the load and the rate at which heart rate and lactate returned to normal (lactic acid associated with muscle fatigue) were slightly higher in children than in professional athletes. And much higher in children than in untrained adults.
That is, the received data testify that children’s muscles recover very quickly. And just this, according to scientists, it is possible to explain why children remain active and energetic longer than adults, all other things being equal.