Technology has come a long way. Nowadays, on-hand fitness trackers have just created the hype for measuring your fitness; calories burned, heart rate and even your stress. But have they lived up to that extent? This answer is maybe not.

Cardiologist Euan Ashley, Associate Professor of Medicine at the Stanford University Medical Center and Stanford Hospital and Clinics in Northern California, says that he gets people coming with their fitness data seeking advice for ways to improve their health based on their fitness tracker data, but the main problem is that whether the data was accurate or not. In order to study whether the data recorded by fitness trackers is correct or not, he, along with his colleagues, conducted a study of seven most popular devices and comparing the results with the standard measurements. He studied two dimensions: heart rate and calories burned. For the heart rate, the results were accurate. However, the results for the calories burned were way too different and inaccurate. The degree of error was not less than 20% and reached up to 93%. Apart from the main findings, there were other interesting findings as well i.e. people having healthier weight have larger errors.

 

Researcher Euan Ashley conducting a study on fitness trackers at Stanford University

People seeking help from these fitness trackers might hinder their overall weight-loss program because the main error in these trackers is of the inaccurate burned calories measurement and people heavily rely on how many calories they have burnt in order to lose weight.

However, these trackers are great in other aspects of tracking fitness but as for the weight-loss perspective, people must keep a check on their diet and maintain a balance between their eating and exercising habit in order to lose their weight rather solely relying on these fitness trackers.

 

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