Van Hoof Wannes, Volkaerts Koen, O'Sullivan Kieran, Verschueren Sabine, Dankaerts Wim
Musculoskeletal Research Unit, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation sciences, Katholieke Universiteit Leuven, Tervuursevest 101, B-3001 Leuven, Belgium.
Man Ther. 2012 Aug;17(4):312-7. doi: 10.1016/j.math.2012.02.012. Epub 2012 Mar 20.
The aim of this study was to examine lower lumbar kinematics in cyclists with and without non-specific chronic low back pain (NS-CLBP) during a cross-sectional cycling field study. Although LBP is a common problem among cyclists, studies investigating the causes of LBP during cycling are scarce and are mainly focussed on geometric bike-related variables. Until now no cycling field studies have investigated the relationship between maladaptive lumbar kinematics and LBP during cycling. Eight cyclists with NS-CLBP classified as having a 'Flexion Pattern' (FP) disorder and nine age- and gender-matched asymptomatic cyclists were tested. Subjects performed a 2 h outdoor cycling task on their personal race bike. Lower lumbar kinematics was measured with the BodyGuard™ monitoring system. Pain intensity during and after cycling was measured using a numerical pain rating scale. The NS-CLBP (FP) subjects were significantly more flexed at the lower lumbar spine during cycling compared to healthy controls (p = 0.018), and reported a significant increase in pain over the 2 h of cycling (p < 0.001). One-way repeated measures ANOVA revealed a significant main effect for group (p = 0.035, F = 5.546) which remained just significant when adding saddle angle as a covariate (p = 0.05, F = 4.747). The difference in posture between groups did not change over time. These findings suggest that a subgroup of cyclists with NS-CLBP (FP) demonstrate an underlying maladaptive motor control pattern resulting in greater lower lumbar flexion during cycling which is related to a significant increase in pain.
本研究的目的是在一项横断面自行车实地研究中，检查有无非特异性慢性下腰痛（NS-CLBP）的自行车骑行者的下腰椎运动学情况。虽然下腰痛是自行车骑行者中的常见问题，但调查骑行过程中下腰痛原因的研究很少，且主要集中在与自行车几何形状相关的变量上。到目前为止，尚无自行车实地研究调查骑行过程中适应性不良的腰椎运动学与下腰痛之间的关系。对8名被归类为患有“屈曲模式”（FP）障碍的NS-CLBP自行车骑行者和9名年龄及性别匹配的无症状自行车骑行者进行了测试。受试者在其个人比赛自行车上进行了2小时的户外骑行任务。使用BodyGuard™监测系统测量下腰椎运动学情况。使用数字疼痛评分量表测量骑行期间及之后的疼痛强度。与健康对照组相比，NS-CLBP（FP）受试者在骑行过程中下腰椎明显更弯曲（p = 0.018），并且报告在2小时的骑行过程中疼痛显著增加（p < 0.001）。单因素重复测量方差分析显示组间存在显著的主效应（p = 0.035，F = 5.546），当将鞍座角度作为协变量添加时，该效应仍然显著（p = 0.05，F = 4.747）。两组之间的姿势差异不会随时间变化。这些发现表明，患有NS-CLBP（FP）的自行车骑行者亚组表现出一种潜在的适应性不良运动控制模式，导致骑行过程中下腰椎屈曲增加，这与疼痛显著增加有关。
