Glaviano Neal R, Saliba Susan
School of Exercise and Rehabilitation Sciences, University of Toledo, Mailstop 119, Toledo, OH, USA.
Curry School of Education, Department of Kinesiology, University of Virginia, Charlottesville, VA, USA.
Gait Posture. 2018 Sep;65:86-88. doi: 10.1016/j.gaitpost.2018.07.164. Epub 2018 Jul 18.
Females with patellofemoral pain (PFP) present with altered frontal plane kinematics, decreased physical activity, and elevated psychological features. However, the relationship between these factors has not been evaluated.
Does a relationship exist between frontal plane kinematics, physical activity levels, and fear avoidance beliefs in females with PFP.
16 females with PFP (Age = 23.2 ± 4.9years; Height = 166.1 ± 5.9 cm; Mass = 66.3 ± 13.5 kg) completed a 3-D biomechanical assessment during a single leg squat, step-down, and jogging task. Physical activity was collected with an activity monitor over 2-weeks and the Fear Avoidance Belief Questionnaire physical activity subscale was used to assess fear avoidance beliefs. Frontal plane kinematics were correlated with physical activity and fear avoidance, with significant variables included in a multiple regression.
Significant correlations were identified between physical activity and single leg squat hip adduction (r=-0.626, p = 0.01), step-down knee abduction (r=-0.783, p < 0.001) and jogging hip adduction (r=-0.639, p = 0.008). Step-down knee abduction predicted activity level and accounted for 61% of the total variance. Correlations between fear avoidance belief and single leg squat hip adduction (r = 0.477, p = 0.049), step-down knee abduction (r = 0.644, p = 0.007), jogging knee abduction (r = 0.558, p = 0.025), and jogging hip adduction (r = 0.557, p = 0.025) were also identified. Knee abduction during the step-down and single leg squat hip adduction accounted for 37.5% of the variance in the Fear Avoidance Belief Questionnaire.
Altered frontal plane kinematics during step-down and jogging provide insight for clinicians to identify females with patellofemoral pain that may be less physically active, while step-down and squatting kinematics related to fear avoidance beliefs. While these relationships were found, it is essential to identify the underlying mechanism for this activity modification so clinicians and researchers can evaluate successful interventions.
患有髌股关节疼痛（PFP）的女性存在额状面运动学改变、身体活动减少以及心理特征升高的情况。然而，这些因素之间的关系尚未得到评估。
患有PFP的女性的额状面运动学、身体活动水平和恐惧回避信念之间是否存在关联。
16名患有PFP的女性（年龄=23.2±4.9岁；身高=166.1±5.9厘米；体重=66.3±13.5千克）在单腿深蹲、下台阶和慢跑任务期间完成了三维生物力学评估。通过活动监测器收集两周的身体活动数据，并使用恐惧回避信念问卷身体活动分量表来评估恐惧回避信念。将额状面运动学与身体活动和恐惧回避进行相关性分析，显著变量纳入多元回归分析。
身体活动与单腿深蹲时髋关节内收（r=-0.626，p=0.01）、下台阶时膝关节外展（r=-0.783，p<0.001）以及慢跑时髋关节内收（r=-0.639，p=0.008）之间存在显著相关性。下台阶时膝关节外展可预测活动水平，占总方差的61%。恐惧回避信念与单腿深蹲时髋关节内收（r=0.477，p=0.049）、下台阶时膝关节外展（r=0.644，p=0.007）、慢跑时膝关节外展（r=0.558，p=0.025）以及慢跑时髋关节内收（r=0.557，p=0.025）之间也存在相关性。下台阶和单腿深蹲时髋关节内收的膝关节外展占恐惧回避信念问卷方差的37.5%。
下台阶和慢跑期间额状面运动学的改变为临床医生识别可能身体活动较少的髌股关节疼痛女性提供了见解，而下台阶和深蹲运动学与恐惧回避信念相关。虽然发现了这些关系，但确定这种活动改变的潜在机制至关重要，以便临床医生和研究人员能够评估成功的干预措施。
