The reason why the weight does not decrease even when exercising is that behavior other than exercise changes

byMrs eNil

Through research conducted for many years, it is said that "exercise is not the most suitable method for weight loss"It has been shown in several studies. A new study targeting mice shows a very interesting content that "After exercising, the mouse takes action to conserve energy" after exercise.

Reduced Nonexercise Activity Attenuates Negative Energy Balance in Mice Engaged in Voluntary Exercise | Diabetes
http://diabetes.diabetesjournals.org/content/early/2018/03/12/db17-1293

Why Exercise Alone May Not Be the Key to Weight Loss - The New York Times
https://www.nytimes.com/2018/04/11/well/move/why-exercise-alone-may-not-be-the-key-to-weight-loss.html

Many studies conducted in the past showed that "weight loss of subjects who exercised was less than mathematical expectations." Animal researchers at the Vanderbilt University who studied this time pointed out that "After exercising, will people and animals become more greedy and will take more calories?" Or is it that you tend to sit and tend to take a rest in areas other than exercise? " I thought that behaviors that would not have occurred if exercise did not take place resulted in filling up the energy consumed in the exercise and not losing weight.

bybruce mars

Whether you are a mouse or a human being, it is very difficult to measure all physical behavior in living things. In recent years, however, technologies capable of tracking the movement of animals by applying infrared beams have been developed and animal behavioral patterns can be mapped by software, so animal researchers at Vanderbilt University conducted experiments I took the step.

Researchers placed 12 young, healthy, normal weight mice in a wheeled cage and tracked their behavior. At this time, the wheels were fixed for the first 4 days, but since the wheels were not fixed for the next nine days, the mouse could freely run over the wheel during this period.

As a result of observation and measurement, we found that energy consumption of the mouse by exercising on the wheel is very large. Also, because of the increased momentum, the mouse did not increase the amount of meal to regain energy it consumed.

However, just after using the wheel, the mouse changed behavior. When locking the wheels, the mice, who were hanging around in the cage, became unwilling to unlock the wheels. Especially when the wheel is fixed, the action of "walking around a long distance" becomes fewer, the mice run on the wheels, the rest for the rest for a rest outside the wheel or a short walk It is said that it became. Daniel Lark, a molecular physiologist at Vanderbilde University says, "Changes in mouse behavior outside the wheel counteract calorie consumption by the wheel."

byMaarten

The mouse after fixing the wheel is said that the consumption of energy slightly exceeds the intake, but even after the wheel has been unfastened the mouse will remain as if the wheels were fixed If it is moving it is seen that the calorie expended on a day would have increased by 45%.

It is unknown why the behavior of the mouse has changed, but Mr. Lark explains, "I am tired or I have run out of time." Also, when the animal's body or brain senses energy shortage, a signal is sent to the brain to "slow down", preserving energy,HomeostasisIt is also thought that weight does not decrease because it tries to keep.

Of course, this research is about mice, there are many possibilities that different results will be obtained in human-oriented research, but for those who think "want to lose weight" it contains interesting suggestions It seems to be said that there is.