Roessingh Research and Development, Post Box 310, 7500 AH Enschede, The Netherlands.
J Psychosom Res. 2011 Sep;71(3):129-35. doi: 10.1016/j.jpsychores.2011.04.004. Epub 2011 May 18.
Deviations in daily physical activity patterns may play an important role in the development and maintenance of fatigue in the chronic fatigue syndrome (CFS). The aim of this study is to gain insight into the objective daily physical activity pattern of patients with CFS in comparison with healthy controls. The secondary objective is studying the awareness in performing physical activities.
The objective daily physical activity pattern was measured with a tri-axial accelerometer in 35 patients with CFS and in 35 age- and gender-matched healthy controls. The objective daily physical activity level and distribution of physical activities at low, medium and high intensity levels during the day were measured. Moreover, variability in performing physical activities within and between subjects was computed. Subjective ratings of self-reported daily physical activity levels were assessed at a visual analog scale.
CFS patients were significantly less physically active in the afternoon and evening, and spent fewer activities at high intensity levels and more at low intensity levels. Moreover, CFS patients showed more variability in their own physical activity pattern during the afternoon. The heterogeneity in the physical activity pattern between subjects within the CFS and control group did not differ. Finally, CFS patients were more aware about their daily physical activity level than healthy controls.
CFS patients showed deviations in the objectively measured daily physical activity pattern. Future research should elucidate the relation between impaired balances in daily physical activity patterns and fatigue severity in CFS.
日常体力活动模式的偏差可能在慢性疲劳综合征（CFS）的发生和维持中起着重要作用。本研究旨在深入了解 CFS 患者与健康对照组相比的客观日常体力活动模式。次要目的是研究对体力活动的感知。
使用三轴加速度计测量 35 例 CFS 患者和 35 名年龄和性别匹配的健康对照者的日常体力活动模式。测量日间低、中、高强度水平的日常体力活动水平和体力活动分布。此外，计算了个体内和个体间体力活动的可变性。使用视觉模拟量表评估自我报告的日常体力活动水平的主观评分。
CFS 患者在下午和晚上的体力活动明显减少，高强度活动的活动时间减少，低强度活动的活动时间增加。此外，CFS 患者在下午表现出更大的自身体力活动模式的可变性。CFS 和对照组内受试者之间的体力活动模式异质性没有差异。最后，CFS 患者比健康对照组更了解自己的日常体力活动水平。
CFS 患者表现出日常体力活动模式的客观测量偏差。未来的研究应该阐明日常体力活动模式中平衡受损与 CFS 疲劳严重程度之间的关系。
