Laboratoire NMSK, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium.
Forme & Fonctionnement Humain Lab, CeREF, Haute Ecole Louvain en Hainaut, Charleroi, Belgium.
PLoS One. 2019 Jul 25;14(7):e0219515. doi: 10.1371/journal.pone.0219515. eCollection 2019.
Sensorimotor control strategies during cervical axial rotation movements have been previously explored in narrow age ranges but never concurrently in Children and Seniors during a well-standardized task. However, the lifespan developmental approach provides a framework for research in human sensorimotor control of the head-neck complex. A cross-sectional design was used to investigate the influence of age on head-neck dynamic performance adopted by asymptomatic Children, Adults and Seniors using a standardized task (DidRen Laser test). Participants performed 5 cycles of left/right head-neck complex fast rotational movements toward 3 targets with 30° of angular separation. Dynamic performances were computed from total execution time of the test and kinematic variables derived from rotational motion of head measured by an optoelectronic system. Eighty-one participants, aged 8-85 yrs, were stratified in four groups: Children, Younger adults, Older adults and Seniors. Children were significantly slower than Younger (p<0.001) and Older adults (p<0.004) and Seniors slower than Younger adults (p<0.017) to perform the test. Children adopted a lower average speed compared to Younger (p<0.001) and Older adults (p<0.008). Children reached the peaks speed significantly later than Younger (p<0.004) and Older adults (p<0.04) and acceleration significantly later than Younger (p<0.001) and Older adults (p<0.013). From the peak acceleration, Children reached end of the cycle significantly slower than Younger (p<0.008) and Older adults (p<0.008). Children significantly differed from all other groups for rotational kinetic energy, with smaller values compared to Younger adults (p<0.001), Older adults (p<0.005) and Seniors (p<0.012). Variability was also significantly higher for Seniors and Children. In conclusion, age influences head-neck visually elicited rotational dynamics, especially in Children. These results suggest that age should be taken into account when establishing normative data and assessing dynamic head-neck sensorimotor control of patients with neck pain.
在颈椎轴向旋转运动中，传感器运动控制策略已在较窄的年龄范围内进行了探索，但从未在儿童和老年人中同时在标准化任务中进行过探索。然而，生命周期发展方法为研究头颈部复杂的人类传感器运动控制提供了框架。采用横断面设计，使用标准化任务（DidRen 激光测试）研究无症状儿童、成人和老年人年龄对头部-颈部动态性能的影响。参与者进行 5 次左/右头部-颈部复合快速旋转运动，朝向 3 个目标，间隔 30°。通过光电系统测量头部旋转运动得出的运动学变量和总测试执行时间计算动态性能。81 名参与者，年龄 8-85 岁，分为 4 组：儿童、年轻成人、老年成人和老年人。与年轻成人（p<0.001）和老年成人（p<0.004）相比，儿童完成测试的速度明显较慢，与年轻成人（p<0.017）相比，老年人完成测试的速度较慢。与年轻成人（p<0.001）和老年成人（p<0.008）相比，儿童采用的平均速度较低。儿童达到峰值速度的时间明显晚于年轻成人（p<0.004）和老年成人（p<0.04），达到加速度的时间明显晚于年轻成人（p<0.001）和老年成人（p<0.013）。从峰值加速度开始，儿童结束周期的速度明显慢于年轻成人（p<0.008）和老年成人（p<0.008）。与所有其他组相比，儿童的旋转动能明显较小，与年轻成人（p<0.001）、老年成人（p<0.005）和老年人（p<0.012）相比。老年人和儿童的变异性也明显更高。总之，年龄会影响头颈部视觉诱发的旋转动力学，尤其是儿童。这些结果表明，在建立正常数据和评估颈部疼痛患者的动态头颈部传感器运动控制时，应考虑年龄因素。
