If you often use activities or health applications on the iPhone to record the number of steps you walk every day, then your performance may be better than you think. A study by the University of British Columbia found that the iPhone underestimated the number of people's steps-about 2 1.5%.
This study compares the iphone with the gold standard for measuring steps: a waist-high pedometer. The team also conducted laboratory tests, in which the number of steps on the treadmill was calculated manually to provide absolutely accurate data results.
Their findings are interesting. In the laboratory environment, when the tester uses a faster walking speed, the test accuracy of the iPhone drops by less than 5%-even in a special pedometer, this floating value is considered acceptable.
However, when the tester started to walk at a slower speed, the number of steps of the iPhone decreased by 9.4%. In the real life environment, iPhone missed 265,438+0.5% steps-about 65,438+0,340 steps were calculated less every day on average.
The research team said that the reason for missing so many steps is that people don't always carry their mobile phones with them at home or at work, except that there are no statistical steps for walking slowly on the iPhone. For example, we often go to the toilet and water dispenser to pour water, which will be repeated many times a day, but we don't always take our mobile phones with us.
The good news, however, is that the research found that inaccurate step number data is often less than the actual number of steps, rather than exaggerating the number of steps.
Mark, the main author of the study? Duncan said: "For those who are already tracking their own steps, they can rest assured that if their mobile phones can reach the recommended 65,438+100,000 steps per day, they may get more help, which will also help their efforts to improve their health. From the perspective of public health, it is much better than exaggerating the number of steps. "