Release date: 2013-08-21
NTT Docomo, Japan's largest mobile phone provider, has developed a new smartphone external device that can measure how much fat it burns by measuring the amount of acetone in the user's breath, showing weight loss. The device demonstrates its advantages in comparison with high-end laboratory equipment testing. The research results are published in the latest issue of Respiratory Research.
One of the difficulties in losing weight is the lack of real-time feedback. Significant effects of trying to lose weight are usually not shown in the moment. But when people are in an unstable, intermediate transitional diet or exercise, they always want to know if they are doing it right or have an effect. To solve this problem, the researchers found a way to give the dieter more immediate feedback by measuring the amount of acetone in the breath.
Acetone is a metabolite of fat breakdown in the body. It is excreted when exhaled, so it can be used as a good indicator of fat burning. The general method of measurement is gas chromatography or mass spectrometry, but these expensive and cumbersome laboratory equipment is not suitable for everyday use.
The newly developed device is portable and practical, roughly the same size as a smartphone. The prototype is two semiconductor gas sensors with different sensitivity characteristics, taking into account the concentration of acetone while taking into account ethanol, hydrogen and humidity. The user can place a small tube in the mouth and then blow, the device measures the amount of acetone in the breath, and with an encouraging message, the device screen shows a fat burning pattern.
It should be emphasized that the device is not a gimmick. The researchers recruited overweight volunteers to verify their accuracy. One group of volunteers was asked to exercise a small amount of exercise over a period of time; the other group was asked to exercise and reduce calorie intake; another control group did not reduce calories or exercise. The researchers found that the performance of the device was almost exactly like a gas chromatograph that accurately measured the level of acetone, and the results obtained by measuring the acetone concentration in the exhalation showed a strong correlation. In addition, people who control calorie intake and physical exercise have a significant decrease in body fat, while the concentration of exhaled acetone is significantly increased.
The results show that the device is very practical for self-monitoring fat burning at home and will help prevent and alleviate obesity and diabetes. This will be one of the more and more medical devices designed in conjunction with smartphones, and devices for critical moments, not for entertainment, will show strong growth in the future.
Source: Kexun
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