The main purpose of the scale - determining body weight. But the models we tested, has an additional feature: standing on them, you can see how much your body fat as well as water. However, use of such devices can not all because during the procedure through the body passes an electric current.
According to the instructions to the balance Bork service life of six months. One half of the year limited warranty and the manufacturer.
Health in the Balance
Conceiving this test, we wanted to "test the accuracy of the" most popular models of electronic household scales floor. But having come to shop, learned that the "same price" - from 900 to 2300 rubles, you can buy not just electronic scales, scales, body composition analyzers. The models in this price band of the network home appliances and steel test participants: the Cameron BFS-333, Vitek VT-1953 BK, Bork SC EFG 4315 TR and Tefal BodyUp . Later we learned that the company Tanita was the first in the creation of such weights, so the store "Medtech" model purchased Tanita BC-532 (3200 rubles). First, they wanted to take it as a standard in determining body composition. And then we decided not to create idols and experience on common grounds.
Table 1 "Specifications and parameters measured floor scales analyzers"
|Model||BC-532||VT-1953 BK||BFS-333||SC EFG 4315 TR||BodyUp|
|Service life, years||10||3||3||0.5||2|
|The maximum weight, kg||150||150||150||150||160|
|"Only weight" function *)||Yes||Yes||Yes||Yes||no|
|batteries||4 AA||2 CR2032||4 AA||CR2032||2 AAA|
|functions||Weigh, body fat, visceral fat, water, calories, bone mass, muscle mass, metabolic age, physical type||Weighing, fat, water and muscle||Weigh, body fat, water||Weigh, body fat, water, calories, muscle mass||Weighing, fat mass|
|Scale weight, kg||2,588||1.22||2,544||1,958||1,102|
|Minimum load perceived weights kg||0.5||2||10||10||1|
|The error in weighing up to 20 kg, kg||0.1||+/- 0.1|
|The error in weighing over 20 kg, kg||-0.2||0.2||0.1||+/- 0.5|
|The stability of the readings||Complies with GOST||Complies with GOST||Complies with GOST||Complies with GOST||unstable|
|Note:||*) The possibility of weighing the mute electric shock.|
To verify the accuracy of the samples, we gave them to the lab. There, on the platform of each model set standard weights weighing from minimum to maximum specified in the instructions. Thus, according to the manufacturers, all models can withstand up to 150 kg, and scales Tefal - 160.
Under the heaviest load of all the scales we kept a stiff upper lip, only two made experts worried - plastic Cameron and glass Bork owners manual . First desperately creak, and the second to put the weight had to with the greatest care. But in the end everything worked out - the weight limit has been taken.
The stability of the balance - the ability of the device constantly show the same weight when placing them on the cargo of the same mass.
the politeness of kings
According to the results of the most accurate measurements proved sample Tanita - he practically zero error and the highest stability of reading. Laboratory experts have suggested that these scales have been calibrated and calibrated at the factory.
In second place on the accuracy of the scales were Bork owners manual - error of just 0.1 kg. This is very good for the household weights.
Vitek (-0.2 kg) and Cameron (+0,2 kg) also showed a good result corresponding GOST. Indications in those and other stable.
And here is a sample of Tefal , on the contrary, showed poor stability. With one and the same load it showed different weight, wherein the deflection reached 0.5 kg, which does not meet specifications. Trust such weights are not worth it, because when the readings are jumping, it is impossible to determine the weight you are typing or discard.
Stand on the scales - it's not tricky. But how safe is it? The laboratory tested and it is.
Let us say at once: the samples that are resistant to one hundred percent, was not there. This is due to the design of electronic scales. The fact that the sensor (the determinant of weight) embedded in their legs, and the scales during the weighing is not overturned, it is necessary to get up strictly intended for this area. Security also depends on the material from which made the platform and on its size.
Best of all established themselves in this test, the lowest weights - Vitek owners manual . Their surface is made of absolutely non-slip plastic. Staging area for comfortable feet.
Model Cameron high, but stable enough due to the width and weight of the platform. Slip on it will not cross embossed stripes.
Virtually non-slip feet on the scales Tefal , made of frosted plastic. However, if you stand on the platform is not exactly in the center, the balance can tip over.
Visceral fat surrounds the internal organs of the gastrointestinal tract. At a high level, visceral fat is a risk of high blood pressure, the development of heart disease, diabetes.
With caution should use the model Bork owners manual - its surface is entirely made of smooth glass, which is easy to slip.
Recognized as the most unstable scales Tanita . Their safety have been sacrificed for the sake of design delights. The platform of this model raised almost like a skateboard, and the surface has a surreal form, with small differences in height. Areas to stop combined with glass and metal, so their anatomy can not be called.
Rabbits - is not only valuable fur ...
Know your weight is, of course, important. But it is equally important to imagine why we add or lose weight. For example, losing weight is not whether due to loss of water? It does not remain weight stable due to the fact that the fat turns into muscle? Or, maybe the person just "hard bone"?
Modern scales with body composition analyzer provides answers to these questions, as determined by the ratio of body fat and water. A model Tanita also distinguishes the muscle tissue from the bone, according to how much fat you have accumulated in the internal organs (visceral fat), and at the same time determines the biological age.
Impedance in physics called electrical impedance tissues.
Believe it or not?
How to check the accuracy of the body composition analyzer readings? Does it not quackery?
In search of answers, we turned to the clinic of the Institute of Food Sciences, vkabinet bioimpedance (body composition measuring). Cabinet hostess - senior scientific employee of the clinic PhD Yunna P. Popov, explain the principles of operation of such devices, and then took control measurement on a laboratory instrument for bioimpedance analysis of body composition. The obtained data, we have taken as the standard, and compared them with the average reading of our models.
Virtually all test samples except one showed a very good result - the standard deviation of not more than 1-2%. It is only Scales Bork made a mistake with the definition of fat: they flatter their owners, claiming that the body fat by 6-7% less than it actually is. Such is the analyzer with built-optimist "pink glasses".
Metabolic age indicates what age of the organism level refers metabolism.
It is better not to risk
Upon learning that the bioimpedance analysis procedure relates to the need to pass through the body of an electric current, we decided to find out whether it is harmful to health. And all of it is possible to use such scales?
It turned out that clarity in this matter. The instructions for some models it is written that they are contraindicated for pregnant women and those who use a pacemaker. The instructions said to the other that the contraindications for pregnant women there. With pacemaker is clear - electrical discharge can really cause malfunctions. But with a contraindication for women in the position of the question remained open.
It is known that expectant mothers often weigh: they need to make sure that it increases the body mass with the development of the fetus. What happens if they do not buy the simple scales and scales with the analyzer? The more so because such models are on sale more.
With this question we turned again to Yunne Pavlovna Popova. She said that special contraindications to the use of bioimpedance for pregnant women there. However, common sense, women, expects the addition of the family, it is better not to risk it and do not use the analyzer. And if such scales have already purchased, an additional function can simply be turned off. Incidentally, four of the five tested models - Tanita, Vitek owners manual, the Cameron and Bork provide this opportunity. And only in the sample Tefal mode "only Weighing" is not provided.
Not for all
Another important question: how easy is it to use scales with body composition analyzer? With models Vitek, Cameron and Bork easily do that thanks to the detailed instructions. In addition to the basic functions of these weights ( "activation", "only weighting") can understand intuitively.
In the sample Tanita 13 buttons, while the rest is not greater than 4. However, reasonableness, consistency, visibility and excellent description of the functions of each key in the instruction makes this model easy to manage.
But in the instructions to the scales Tefal not only does not say how to use the "zhiroanalizatorom", but there is even information on how to switch on the balance. However, at the very back of the pack with, among other advertising signs can be found the phrase: "Automatic switching on standing on the platform." Although automatic working principle of this device is quite convenient (the user has to perform a minimum of action), the absence of description in the manual can make your purchase useless.
Table 2. "The results of the tests floor scales analyzers"
|Model||BC-532||VT-1953 BK||BFS-333||SC EFG 4315 TR||BodyUp|
|The accuracy in weighing 50%||5.0||4.1||4.0||4.7||1.2|
|error in weighing: 70%||5.0||3.7||3.6||4.6||1.4|
|above 20 kg||5.0||3.5||3.5||4.5||1.0|
|stability readings 30%||5.0||5.0||5.0||5.0||1.0|
|Accuracy body composition analyzer reading of 20%||5.0||4.5||5.0||2.0||5.0|
|Ease of Use 10%||3.7||3.9||3.6||4.3||2.9|
|convenience and ease of operation 40%||4.5||4.5||4.5||4.5||2.5|
|ease of platform 20%||3.5||5.0||4.0||3.5||4.5|
|display size and visibility readings 20%||4.5||3.5||3.0||4.5||4.0|
|Control keys 20%||3.0||4.0||4.0||4.5||2.0|
|The final grade 100%||4.3 *)||4.2||4.1||3.6 **)||2.5|
|Remarks:||*) Score reduced by 0.5 points due to the lack of stability of the balance.|
|**) Grade lowered by 0.5 points due to the slippery surface of the weights.|
- Tanita BC 532 - the balance of the original form to the pharmacy accuracy and advanced features of the analyzer. This is the most expensive test model (3200 rbl.), But alas, not the most stable.
- Vitek VT-1953 BK - precise, stable and comfortable scale for a reasonable price (1400 rbl.).
- Sample Cameron BFS-333 demonstrated the best price-performance ratio (900 rub.). Indications of weights and body fat analyzer is accurate and stable.
- At the balance Bork SC EFG 4315 good weighing accuracy. But this device is supplied slippery glass surface, and significant differences zhiroanalizatora readings with the standard.
- Indications models Tefal BodyUp 2024 are not sufficiently accurate and stable, and the instruction is of little help to master the controls. In addition, the scales can not simply weigh in, unplugging electrical current.