Saad Nabil, Moustafa Ibrahim M, Ahbouch Amal, Alsaafin Nour Mustafa, Oakley Paul A, Harrison Deed E
Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
Neuromusculoskeletal Rehabilitation Research Group, RIMHS-Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
J Clin Med. 2023 Sep 26;12(19):6211. doi: 10.3390/jcm12196211.
This study assessed the relationship between head posture displacements and biomechanical parameters during gait and jumping. One hundred male and female students (20 ± 3 yrs) were assessed via the PostureScreen Mobile® app to quantify postural displacements of head rotations and translations including: (1) the cranio-vertebral angle (CVA) (°), (2) anterior head translation (AHT) (cm), (3) lateral head translation in the coronal plane (cm), and (4) lateral head side bending (°). Biomechanical parameters during gait and jumping were measured using the G-Walk sensor. The assessed gait spatiotemporal parameters were cadence (steps/min), speed (m/s), symmetry index, % left and right stride length (% height), and right and left propulsion index. The pelvic movement parameters were (1) tilt symmetry index, (2) tilt left and right range, (3) obliquity symmetry index, (4) obliquity left and right range, (5) rotation symmetry index, and (6) rotation left and right range. The jump parameters measured were (1) flight height (cm), (2) take off force (kN), (3) impact Force (kN), (4) take off speed (m/s), (5) peak speed (m/s), (6) average speed concentric phase (m/s), (7) maximum concentric power (kW), (8) average concentric power (kW) during the counter movement jump (CMJ), and (9) CMJ with arms thrust (CMJAT). At a significance level of 0.001, moderate-to-high correlations (0.4 < < 0.8) were found between CVA, AHT, lateral translation head, and all the gait and jump parameters. Weak correlations (0.2 < < 0.4) were ascertained for lateral head bending and all the gait and jump parameters except for gait symmetry index and pelvic symmetry index, where moderate correlations were identified (0.4 < < 0.6). The findings indicate moderate-to-high correlations between specific head posture displacements, such as CVA, lateral head translation and AHT with the various gait and jump parameters. These findings highlight the importance of considering head posture in the assessment and optimization of movement patterns during gait and jumping. Our findings contribute to the existing body of knowledge and may have implications for clinical practice and sports performance training. Further research is warranted to elucidate the underlying mechanisms and establish causality in these relationships, which could potentially lead to the development of targeted interventions for improving movement patterns and preventing injuries.
本研究评估了步态和跳跃过程中头部姿势位移与生物力学参数之间的关系。通过PostureScreen Mobile®应用程序对100名男女学生（20±3岁）进行评估，以量化头部旋转和平移的姿势位移，包括：（1）颅椎角（CVA）（°），（2）头部前向平移（AHT）（cm），（3）冠状面内头部侧向平移（cm），以及（4）头部侧向侧弯（°）。使用G-Walk传感器测量步态和跳跃过程中的生物力学参数。评估的步态时空参数包括步频（步/分钟）、速度（米/秒）、对称指数、左右步长百分比（身高百分比）以及左右推进指数。骨盆运动参数包括：（1）倾斜对称指数，（2）左右倾斜范围，（3）倾斜度对称指数，（4）左右倾斜度范围，（5）旋转对称指数，以及（6）左右旋转范围。测量的跳跃参数包括：（1）飞行高度（cm），（2）起跳力（kN），（3）冲击力（kN），（4）起跳速度（m/s），（5）峰值速度（m/s），（6）反向运动跳跃（CMJ）过程中的平均速度向心阶段（m/s），（7）最大向心功率（kW），（8）平均向心功率（kW），以及（9）手臂推力的CMJ（CMJAT）。在显著性水平为0.001时，发现CVA、AHT、头部侧向平移与所有步态和跳跃参数之间存在中度至高度相关性（0.4＜ ＜0.8）。对于头部侧弯与除步态对称指数和骨盆对称指数之外的所有步态和跳跃参数，确定为弱相关性（0.2＜ ＜0.4），而步态对称指数和骨盆对称指数之间存在中度相关性（0.4＜ ＜0.6）。研究结果表明，特定的头部姿势位移，如CVA、头部侧向平移和AHT与各种步态和跳跃参数之间存在中度至高度相关性。这些发现突出了在评估和优化步态和跳跃过程中的运动模式时考虑头部姿势的重要性。我们的研究结果为现有知识体系做出了贡献，可能对临床实践和运动表现训练具有启示意义。有必要进行进一步研究以阐明这些关系的潜在机制并建立因果关系，这可能会导致开发针对性的干预措施来改善运动模式并预防损伤。
