Test-retest reproducibility of the exercise treadmill examination in lumbar spinal stenosis

作     者：Deen, HG Zimmerman, RS Lyons, MK McPhee, MC Verheijde, JL Lemens, SM 

作者机构：Mayo Clin Dept Neurol Surg Jacksonville FL 32224 USA Mayo Clin Dept Phys Med & Rehabil Jacksonville FL 32224 USA 

出 版 物：《MAYO CLINIC PROCEEDINGS》 (梅奥诊所记录)

年 卷 期：2000年第75卷第10期

页      面：1002-1007页

核心收录：

学科分类：1002[医学-临床医学] 10[医学] 

主　　题：运动试验/统计学和数值数据 椎板切除术 学习 小腿/神经支配 腰椎/病理生理学 腰椎/外科学 疼痛/病因学 感觉异常/病因学 周围神经系统疾病/并发症 前瞻性研究 椎管狭窄/病理生理学 椎管狭窄/外科学 统计学 非参数 时间因素 步行/生理学 老年人 老年人 80以上 女(雌)性 人类 男(雄)性 中年人 

摘      要：Objective: To provide further validation of the treadmill test by assessing its test-retest reproducibility, Patients and Methods: In this prospective study, 28 patients with severe lumbar spinal stenosis underwent exercise treadmill testing, first at a walking speed of 1.2 mph and then at the patient s preferred walking speed, All patients had a second treadmill examination or retest, No treatment intervention was performed between the initial test and the retest. Time to first symptoms (TFS) and total ambulation time (TAT) were measured, Differences between the baseline examination and the retest examination were assessed by using the concordance correlation coefficient (CCC) as well as graphically, Results: There was good reproducibility between baseline test and retest results for all 4 end points: 1.2 mph, TFS (CCC = 0.90);1.2 mph, TAT (CCC = 0.89);preferred walking speed, TFS (CCC = 0.98);and preferred walking speed, TAT (CCC = 0.96), The median difference between trials was not significantly different from zero for any of the 4 outcomes, Conclusions: Exercise treadmill testing has good test-retest reproducibility, There was no learning phenomenon associated with the test procedure. The study further validates the clinical utility of exercise treadmill testing in patients with lumbar spinal stenosis and neurogenic claudication.