Bartholdy Cecilie, Gudbergsen Henrik, Bliddal Henning, Kjærgaard Morten, Lykkegaard Kasper Lundberg, Henriksen Marius
The Parker Institute, Copenhagen University Hospital, Bispebjerg and Frederiksberg, Copenhagen, Denmark.
Department of Physical and Occupational Therapy, Copenhagen University Hospital, Bispebjerg and Frederiksberg, Copenhagen, Denmark.
Arthritis. 2018 Mar 1;2018:6596278. doi: 10.1155/2018/6596278. eCollection 2018.
Physical inactivity is important to address, and an objective way of measuring inactivity is by accelerometry. The objective of this study was to determine the reliability and construct validity of the SENS motion system to record physical activity and inactivity in patients with knee osteoarthritis. Participants with an age > 40 years and an average weekly pain above 0 on a numeric rating scale (0 = no pain, 10 = worst pain) were included. Participants had a total of two study visits and at each visit participants completed a standardized activity. Data from 24 participants were analysed. A mean agreement of 99% (SD 3%) for sedentary behaviour and a mean agreement of 97% (SD 9%) for active behaviour were found. The agreement for "walking" was 28% (SD 18%). Mean agreement between recordings on the two visits was 96% (SD 8%) for sedentary behaviour and 99% (SD 1%) for active behaviour. The SENS motion activity measurement system can be regarded as a reliable and valid device for measuring sedentary behaviour in patients with knee OA, whereas detection of walking is not reliable and would require further work.
解决身体活动不足问题很重要，而通过加速度计测量身体活动不足是一种客观的方法。本研究的目的是确定SENS运动系统记录膝骨关节炎患者身体活动和不活动情况的可靠性和结构效度。纳入年龄大于40岁且数字评分量表上平均每周疼痛程度高于0（0 = 无疼痛，10 = 最严重疼痛）的参与者。参与者共进行两次研究访视，每次访视时参与者都要完成一项标准化活动。对24名参与者的数据进行了分析。发现久坐行为的平均一致性为99%（标准差3%），活跃行为的平均一致性为97%（标准差9%）。“行走”的一致性为28%（标准差18%）。两次访视记录之间，久坐行为的平均一致性为96%（标准差8%），活跃行为的平均一致性为99%（标准差1%）。SENS运动活动测量系统可被视为测量膝骨关节炎患者久坐行为的可靠且有效的设备，而对行走的检测不可靠，需要进一步研究。
