在不同步行速度下追踪 Apple Watch 上的步数。
Tracking Steps on Apple Watch at Different Walking Speeds.
机构信息
Kinesiology, Division of Science, The Pennsylvania State University, Reading, PA, USA.
Engineering, Division of Engineering, Business and Computing, The Pennsylvania State University, Reading, PA, USA.
出版信息
J Gen Intern Med. 2018 Jun;33(6):795-796. doi: 10.1007/s11606-018-4332-y.
Abstract
KEY POINTS
QUESTION: How accurate are the step counts obtained from Apple Watch?
FINDINGS
In this validation study, video steps vs. Apple Watch steps (mean ± SD) were 2965 ± 144 vs. 2964 ± 145 steps; P < 0.001. Lin's concordance correlation coefficient showed a strong correlation (r = 0.96; P < 0.001) between the two measurements. There was a total error of 0.034% (1.07 steps) for the Apple Watch steps when compared with the manual counts obtained from video recordings.
MEANING
Our study is one of the initial studies to objectively validate the accuracy of the step counts obtained from Apple watch at different walking speeds. Apple Watch tested to be an extremely accurate device for measuring daily step counts for adults.
摘要
要点
苹果手表获取的步数有多准确？
研究发现
在这项验证研究中，视频计步与苹果手表计步（平均值±标准差）分别为 2965±144 步和 2964±145 步；P<0.001。林氏一致性相关系数显示两种测量方法之间具有很强的相关性（r=0.96；P<0.001）。与视频记录中手动计数相比，苹果手表的步数总误差为 0.034%（1.07 步）。
意义
我们的研究是最初的几项研究之一，旨在客观验证不同步行速度下苹果手表计步的准确性。苹果手表被证明是一种非常精确的测量成年人日常步数的设备。
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