■在不同类型的鞋类中定期行走可能会增加中侧剪切力,膝盖内收力矩,或垂直地面反作用力可能增加早期发展的风险膝骨关节炎(OA)。
■比较在3种鞋类条件下可能影响膝盖OA发展的运动学和动力学参数。
■对照实验室研究。
■共有40名无症状的参与者在实验室中以自己选择的赤脚(BF)行走速度进行了行走试验,简约(MF),和中性(NF)鞋类条件。使用离散点值描述膝关节参数,和连续曲线使用统计参数映射进行评估。使用3×1重复测量方差分析来确定鞋类对离散和连续数据的主要影响。要比较鞋类条件之间的差异,使用事后配对t检验。
■离散点分析显示,在重量吸收阶段,与MF和BF相比,NF的膝功率显著更大(两者P<.001)。统计参数映射分析表明,与NF和MF相比,BF在推进阶段结束时的矢状面中的膝角明显更大(P=.043)。与NF和MF相比,BF的矢状面(P=.038)和额平面(P=.035)的推进阶段以及在矢状面(P=.034)的吸收阶段的膝关节力矩明显更大。鞋类对前后路(推进,MF,NF,BF[P=.008];吸收,^BF,MF,SBNF[P=.001]),中外侧(推进,MF,NF,BF[P=.005];吸收,NF,MF,BF[P=.044]),和垂直(推进,NF,BF,MF[P=.001];吸收,MF,BF,¥NF[P<.001])地面反作用力。膝盖力量显示出鞋类的显着主要影响(吸收,NF,MF,BF[P=.015];推进,MF,NF,SB[P=.039])。
■在没有足够调节的情况下在MF中行走会影响动力学和运动学参数,并可能增加膝关节OA早期发展的风险。
UNASSIGNED: Regular walking in different types of footwear may increase the mediolateral shear force, knee adduction moment, or vertical ground-reaction forces that could increase the risk of early development of knee osteoarthritis (OA).
UNASSIGNED: To compare kinematic and kinetic parameters that could affect the development of knee OA in 3 footwear conditions.
UNASSIGNED: Controlled laboratory study.
UNASSIGNED: A total of 40 asymptomatic participants performed walking trials in the laboratory at self-selected walking speeds under barefoot (BF),
minimalistic (MF), and neutral (NF) footwear conditions. Knee joint parameters were described using discrete point values, and continuous curves were evaluated using statistical parametric mapping. A 3 × 1 repeated-measures analysis of variance was used to determine the main effect of footwear for both discrete and continuous data. To compare differences between footwear conditions, a post hoc paired t test was used.
UNASSIGNED: Discrete point analyses showed a significantly greater knee power in NF compared with MF and BF in the weight absorption phase (P < .001 for both). Statistical parametric mapping analysis indicated a significantly greater knee angle in the sagittal plane at the end of the propulsive phase in BF compared with NF and MF (P = .043). Knee joint moment was significantly greater in the propulsive phase for the sagittal (P = .038) and frontal planes (P = .035) in BF compared with NF and MF and in the absorption phase in the sagittal plane (P = .034) in BF compared with MF and NF. A significant main effect of footwear was found for anteroposterior (propulsion, ↑MF, NF, ↓BF [P = .008]; absorption, ↑BF, MF, ↓NF [P = .001]), mediolateral (propulsion, ↑MF, NF, ↓BF [P = .005]; absorption, ↑NF, MF, ↓BF [P = .044]), and vertical (propulsion, ↑NF, BF, ↓MF [P = .001]; absorption, ↑MF, BF, ↓NF [P < .001]) ground-reaction forces. Knee power showed a significant main effect of footwear (absorption, ↑NF, MF, ↓BF [P = .015]; propulsion, ↑MF, NF, ↓BF [P = .039]).
UNASSIGNED: Walking in MF without sufficient accommodation affected kinetic and kinematic parameters and could increase the risk of early development of knee OA.