背景:肌肉无力是帕金森病的一个突出特征,但健康成人中这种缺陷的发生是否与随后的PD诊断相关尚不清楚.
目的:这项研究试图检查肌肉力量之间的关系,以握力和步行速度为代表,以及事故PD的风险。
方法:来自英国生物库的总共422,531名参与者被纳入本研究。通过Cox比例风险模型对几个公认的风险因素进行调整,研究了握力和步行速度与PD事件风险的纵向关联。还进行了亚组和敏感性分析以进一步验证。
结果:经过9.23年的中位随访,2,118(0.5%)个人发生了PD事件。对于每5kg的绝对握力增量,发生PD的风险显着降低了10.2%(HR=0.898,95%CI[0.872-0.924],P<0.001)。同样,每增加0.05kg/kg的相对握力与发生PD的风险降低9.2%相关(HR=0.908,95%CI[0.887-0.929],P<0.001)。值得注意的是,当握力计算为五分位数时,这些关联保持一致.此外,步速较慢的参与者表现出发生PD的风险升高(HR=1.231,95CI[1.075-1.409],P=0.003)。亚组和敏感性分析进一步验证了观察到的关联的稳健性。
结论:我们的研究结果表明,独立于重要的混杂因素,握力和步行步速与PD事件风险呈负相关。这些结果对PD高危人群的早期筛查具有潜在意义。
BACKGROUND: Muscle weakness is a prominent feature of Parkinson\'s disease, but whether the occurrence of this deficit in healthy adults is associated with subsequent PD diagnosis remains unclear.
OBJECTIVE: This study sought to examine the relationship between muscle strength, represented by grip strength and walking pace, and the risk of incident PD.
METHODS: A total of 422,531 participants from the UK biobank were included in this study. Longitudinal associations of grip strength and walking pace with the risk of incident PD were investigated by Cox proportional hazard models adjusting for several well-established risk factors. Subgroup and sensitivity analyses were also conducted for further validation.
RESULTS: After a median follow-up of 9.23 years, 2,118 (0.5%) individuals developed incident PD. For per 5 kg increment of absolute grip strength, there was a significant 10.2% reduction in the risk of incident PD (HR = 0.898, 95% CI [0.872-0.924], P < 0.001). Similarly, per 0.05 kg/kg increment of relative grip strength was related to a 9.2% reduced risk of incident PD (HR = 0.908, 95% CI [0.887-0.929], P < 0.001). Notably, the associations remained consistent when grip strength was calculated as quintiles. Moreover, participants with a slower walking pace demonstrated an elevated risk of incident PD (HR = 1.231, 95%CI [1.075-1.409], P = 0.003). Subgroup and sensitivity analyses further validated the robustness of the observed associations.
CONCLUSIONS: Our findings showed a negative association of grip strength and walking pace with the risk of incident PD independent of important confounding factors. These results hold potential implications for the early screening of people at high-risk of PD.