Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands.
Limburg Brain Injury Centre, Maastricht, The Netherlands.
J Sleep Res. 2021 Oct;30(5):e13334. doi: 10.1111/jsr.13334. Epub 2021 Mar 15.
Sleep and physical activity are both modifiable behavioural factors that are associated with better health and are potentially related. Following traumatic brain injury, damage to the brain caused by an external force, sleep disturbances are common. Exploring bidirectional relationships between sleep and physical activity might provide insight into whether increasing physical activity could decrease these sleep disturbances. The current study, therefore, examined inter- and intra-individual temporal associations between sleep and daytime physical activity in 64 people with traumatic brain injury reporting sleep problems or fatigue (47 males; mean age, 40 years). Sleep and physical activity were measured using actigraphy with corroborating sleep diaries over 14 consecutive days. Multilevel models were used to examine inter- and intra-individual associations between physical activity and sleep. Inter-individual variations showed that earlier bedtimes, earlier wake-up times and lower sleep efficiency were associated with more physical activity. Intra-individual temporal variations showed no significant association of daytime physical activity with sleep duration or continuity. However, shorter sleep time and less wake after sleep onset than usual were associated with more time spent in light-intensity activity the next day. Therefore, sleep may have more of an influence on physical activity than physical activity has on sleep in people with traumatic brain injury. In conclusion, the results do not confirm a potential beneficial effect of physical activity on sleep but suggest that improving sleep quality might be relevant to support of a physically active lifestyle in people with traumatic brain injury. Further research is necessary to confirm these results.
睡眠和身体活动都是可改变的行为因素，与更好的健康相关，并且可能相互关联。在创伤性脑损伤后，由于外力导致大脑受损，睡眠障碍很常见。探索睡眠和身体活动之间的双向关系可能有助于了解增加身体活动是否可以减少这些睡眠障碍。因此，本研究在 64 名报告有睡眠问题或疲劳的创伤性脑损伤患者（47 名男性；平均年龄 40 岁）中，检查了睡眠和白天身体活动之间的个体内和个体间的时间关联。使用活动记录仪和经过证实的睡眠日记在 14 天的连续时间内测量睡眠和身体活动。使用多层次模型检查身体活动与睡眠之间的个体内和个体间关联。个体间变化表明，较早的就寝时间、较早的醒来时间和较低的睡眠效率与更多的身体活动有关。个体内时间变化表明，白天的身体活动与睡眠时间或连续性没有显著关联。然而，与往常相比，睡眠时间较短和睡眠后醒来时间较少与第二天进行更多的低强度活动有关。因此，在创伤性脑损伤患者中，睡眠对身体活动的影响可能大于身体活动对睡眠的影响。总之，这些结果不能证实身体活动对睡眠有潜在的有益影响，但表明改善睡眠质量可能与支持创伤性脑损伤患者的积极生活方式有关。需要进一步的研究来证实这些结果。
