According to recent research, an Apple Watch-like wearable gadget might not be the ideal choice for those who want to monitor their body’s rate of energy expenditure after exercise. Inaccuracies in wearables, from basic step tracking to such vital metrics as heart rate, have been exposed in multiple medical studies. In addition to general accuracy, the PPG waveform when monitoring cardiac activity is known to be affected by variables such as skin color.
Researchers from the Department of Biomedical Engineering at Florida International University have found that wearable devices like Apple and Fitbit are known to fail to record biomarker data for obese or darker-skinned people, in large partly because of a lack of signal strength. Additionally, the accuracy of on-board sensors degrades precipitously as the price of a wearable device drops.
Publication of the European Journal of Sport Science to research comparing the energy monitoring capabilities of Apple Watch Series 6, Fitbit Sense, as well as the very first Polar Vantage V.. A score of 0.995 was deemed good, while a deviance of 0, 45 was found to be unrealistic. 0.995 Based on the standard error estimate, the Apple Watch Series 6 was rated as impractical, and based on the rate of change, it was rated as inaccurate.
Wearable devices were tested using percentage accuracy against medical-grade equipment, as well as fluctuation in results, as the endpoint. With its poor track record for estimating energy expenditure while walking, jogging, weight training, and cycling, the Apple Watch Series 6 has once again earned the dreaded “Poor Accuracy” designation. They also showed low accuracy in measuring energy expenditure, like the Fitbit Sense.
According to a press release announcing the study results, the study was conducted on 30 men and 30 women, all between the ages of 22 and 27 and with an average BMI of 23.1. Since the Apple Watch Series 6 is used by millions of individuals around the world, this is a fairly small demographic to use when judging wristwatch reliability.