A new study by researchers revealed that wrist-worn fitness monitors underestimated energy expenditure with variances of more than 40 per cent.
Melbourne: Fitness freaks, is a popular wrist-worn tracking band that may undervalue exercise levels by up to 40 per cent,a new study revealed.
The accuracy of several popular wrist-worn fitness monitors was determined by the Researchers from the ‘University of Queensland’ (UQ) in Australia.
In addition, Matthew Wallen who hails from UQ’s School of Human Movement and Nutrition Sciences has said that — none of the devices proved to be consistently more accurate overall and the percentage error for energy expenditure was between nine and 43 per cent, while measurement of heart rate was more accurate with only minor variances.
It was further explained by Wallen that combining these two factors shows that there are limits to how much trust can be placed in such devices to monitor energy balance, therefore, to serve as weight loss aids.
Twenty-two (22) healthy volunteers with a split of males and females were included in the test study for about a period of one hour, in completing a variety of activities that ranges from cycling, running and walking, to seated and laying rest.
As per the results, measurements of the wrist-worn devices were compared to electrocardiography readings every 15 seconds and against a portable gas analysis system which measured the number of calories burnt.
Nevertheless, manufacturer instructions maintained that each of the wrist-worn devices was separated in order to check how it reflects the user’s age, gender, height, and weight.
It was also found that wrist-worn fitness monitors undervalue the energy expenditure by more than 40 per cent but with variances.