McMillan Amy Gross, Auman Nancy L, Collier David N, Blaise Williams D S
Department of Physical Therapy, East Carolina University, Greenville, North Carolina 27858, USA.
Pediatr Phys Ther. 2009 Summer;21(2):187-93. doi: 10.1097/PEP.0b013e3181a348be.
To compare frontal plane lower extremity biomechanics during walking in adolescent boys who were overweight (OW) versus healthy weight (HW).
Fourteen boys (7 considered HW, body mass index for age <85th percentile; age 10.8 +/- 0.7 years; 7 considered OW, body mass index for age >95th percentile; age 12.0 +/- 0.7 years) participated. Three-dimensional kinematic data were collected during walking at self-selected speeds. Group means were compared using Student's t tests (alpha = 0.05).
Significant differences were found in timing of rearfoot motions and moments, amplitude of knee motion peaks, timing of knee moment peaks, and timing and amplitudes of peak hip motion and moments.
Boys who were OW collapsed into hip adduction and knee valgus during stance and attempted to compensate with rearfoot inversion. Observed differences in frontal plane kinematics during walking suggest that boys who are OW have increased risk of lower extremity musculoskeletal injuries and dysfunction.
比较超重（OW）青少年男孩与健康体重（HW）青少年男孩在行走过程中的额状面下肢生物力学。
14名男孩参与研究（7名被视为健康体重，年龄别体重指数<第85百分位数；年龄10.8±0.7岁；7名被视为超重，年龄别体重指数>第95百分位数；年龄12.0±0.7岁）。在以自选速度行走过程中收集三维运动学数据。使用学生t检验比较组均值（α=0.05）。
在后足运动和力矩的时间、膝关节运动峰值幅度、膝关节力矩峰值时间以及髋关节运动和力矩峰值的时间与幅度方面发现了显著差异。
超重男孩在站立期出现髋关节内收和膝外翻，并试图通过后足内翻进行代偿。行走过程中额状面运动学的观察差异表明，超重男孩下肢肌肉骨骼损伤和功能障碍的风险增加。
