The Faculty of Health, University of Canberra Research Institute for Sport and Exercise, University of Canberra, Australia.
The Faculty of Health, University of Canberra Research Institute for Sport and Exercise, University of Canberra, Australia.
J Sci Med Sport. 2022 Oct;25(10):855-860. doi: 10.1016/j.jsams.2022.07.007. Epub 2022 Jul 16.
Gravitational Force (Gz), head motion, and helmet mass are associated with neck pain in high performance aircraft pilots. Few studies have quantified neck kinetics (intersegmental neck moments) during aerial combat manoeuvres.
Cross-sectional.
We quantified net joint moments between the skull and C1, and C6-7 during typical flight related headchecks using the Musculoskeletal Model for the Analysis of Spinal Injuries (MASI). We measured the influence of pilot-specific helmets and Gz on joint moments. Nineteen fighter pilots performed four head checks (check6 left, check6 right, extension hold and extension scan) under two helmet conditions. Motion data were transferred to OpenSim where joint moments were calculated at 1G to 9G. Net joint moments were compared across helmet conditions, Gz and headchecks.
The Joint Helmet Mounted Cueing System (JHMCS) resulted in higher moments at each segment- by a factor of 1.25 per unit of Gz, at C1, and by a factor of 1.08 per unit of Gz for C7. ExtensionScan and Check6Left were associated with the highest peak (96.13 Nm and 92.56 Nm). ExtensionScan and ExtensionHold accrued the highest mean cumulative loads at C7 at 9Gz (607.35 Nm.sec/motion, 362.99 Nm.sec/motion respectively). Asymmetries were observed between the Left and Right Check6 motions. High variability was evident between and within pilots.
The MASI model has been successfully applied to quantify intersegmental neck joint moments for typical headchecks that are performed during combat flight manoeuvres. In future, data derived from this model may inform conditioning, rehabilitative and preventative interventions to reduce neck pain in fast jet pilots.
重力（Gz）、头部运动和头盔质量与高性能飞机飞行员的颈部疼痛有关。很少有研究量化过空战机动期间的颈部动力学（颈椎间节段力矩）。
横断面研究。
我们使用脊柱损伤分析的肌肉骨骼模型（MASI）量化了典型飞行头检查过程中颅骨和 C1、C6-7 之间的净关节力矩。我们测量了飞行员特定头盔和 Gz 对关节力矩的影响。19 名战斗机飞行员在两种头盔条件下完成了四个头检查（左 6 检查、右 6 检查、伸展保持和伸展扫描）。运动数据被传输到 OpenSim 中，在 1G 到 9G 的情况下计算关节力矩。在头盔条件、Gz 和头检查之间比较净关节力矩。
联合头盔安装提示系统（JHMCS）导致每个节段的力矩增加，在 C1 处为 Gz 的 1.25 倍，在 C7 处为 Gz 的 1.08 倍。伸展扫描和左 6 检查与最高峰值相关（96.13 Nm 和 92.56 Nm）。伸展扫描和伸展保持在 C7 处获得了 9Gz 下的最高平均累积负荷（607.35 Nm.sec/运动，362.99 Nm.sec/运动）。左和右 6 检查之间存在不对称性。飞行员之间和内部都存在明显的高变异性。
MASI 模型已成功应用于量化在战斗飞行机动期间进行的典型头检查的颈椎间节段关节力矩。将来，从该模型获得的数据可能为减少快速喷气式飞机飞行员的颈部疼痛提供适应、康复和预防干预的依据。
