Validity of the Acti4 method for detection of physical activity types in free-living settings: comparison with video analysis
Validity of the Acti4 method for detection of physical activity types in free-living settings: comparison with video analysis
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DOI：
10.1080/00140139.2014.998724
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发表时间：
2015-06-03
期刊：
影响因子：
2.4
通讯作者：
Holtermann, Andreas
中科院分区：
文献类型：
--
作者：
Stemland, Ingunn;Ingebrigtsen, Jorgen;Holtermann, Andreas
本研究检验了Acti4软件在自由生活中通过加速度计识别不同运动复杂程度的身体活动类型的能力，并与视频观察结果进行了比较。19名飞机客舱清洁工在大腿和臀部安装了ActiGraph GT3X+加速度计，在工作时间内进行了一次半标准化和两次非标准化（飞机内外）的不同运动复杂程度。识别不同活动类型的灵敏度在半标准化时段为75.4-99.4%，飞机外为54.6-98.5%，飞机内为49.9-90.2%。除了在飞机内部“移动”之外，所有活动的特异性都在90%以上。这些发现表明，Acti4可以很好地估计在半标准化条件下不同活动类型所花费的时间，以及在正常运动复杂性水平的非标准化条件下坐、站和走所花费的时间。Acti4软件对人体工程学、职业卫生和公共卫生领域的研究人员和实践者可能是一个有用的工具。从业人员总结：价格便宜，体积小，防水，没有电线，应用Acti4软件的ActiGraph GT3X+可能是人体工程学、职业和公共卫生领域的研究人员和从业人员长期现场测量身体活动类型的有用工具。
This study examined the ability of the Acti4 software for identifying physical activity types from accelerometers during free-living with different levels of movement complexity compared with video observations. Nineteen aircraft cabin cleaners with ActiGraph GT3X+ accelerometer at the thigh and hip performed one semi-standardised and two non-standardised sessions (outside and inside aircraft) with different levels of movement complexity during working hours. The sensitivity for identifying different activity types was 75.4-99.4% for the semi-standardised session, 54.6-98.5% outside the aircraft and 49.9-90.2% inside the aircraft. The specificity was above 90% for all activities, except 'moving' inside the aircraft. These findings indicate that Acti4 provides good estimates of time spent in different activity types during semi-standardised conditions, and for sitting, standing and walking during non-standardised conditions with normal level of movement complexity. The Acti4 software may be a useful tool for researchers and practitioners in the field of ergonomics, occupational and public health.Practitioner Summary: Being inexpensive, small, water-resistant and without wires, the ActiGraph GT3X+ by applying the Acti4 software may be a useful tool for long-term field measurements of physical activity types for researchers and practitioners in the field of ergonomics, occupational and public health.