Abstract：
The deep neck flexors are important for maintaining neck posture by stabilizing and supporting it through low-intensity contraction, ensuring static endurance. The subjects performed computer tasks after having their deep neck flexor endurance measured using a pressure biofeedback unit. The craniovertebral angle (CVA) and the muscle activities were measured while participants were completing computer tasks for 10 min. The deep neck flexor endurance was significantly negatively correlated with CVA changes at 0-2 min. The deep neck flexor endurance was significantly negatively correlated with sternocleidomastoid muscle and upper trapezius activity at 0-2 min. The deep neck flexor endurance negatively predicted CVA changes at 0-2 min and explained 28.8% of the variance in the CVA changes. The lower the deep neck flexor endurance, the earlier the simultaneous changes occurred in the CVA and the neck and shoulder muscle activities during computer tasks.
摘要：
深颈屈肌通过低强度收缩来稳定和支撑颈部姿势，对于保持颈部姿势非常重要，确保静态耐久性。受试者在使用压力生物反馈单元测量其颈深屈肌耐力后执行计算机任务。在参与者完成计算机任务10分钟时，测量颅骨角度（CVA）和肌肉活动。在0-2分钟时，深颈屈肌耐力与颅骨角度变化显着负相关。在0-2分钟时，深颈屈肌耐力与胸锁乳突肌和上斜方肌活动显着负相关。深颈屈肌耐力在0-2分钟时负面预测了CVA的变化，并解释了CVA变化的28.8％。颈深屈肌耐力越低，在计算机任务期间，CVA和颈肩肌肉活动发生的同时变化越早。
