Cachovan M, Rogatti W, Creutzig A, Diehm C, Heidrich H, Scheffler P, Woltering F
Division of Angiology, Herz-Kreislauf-Klinik Bevensen, Germany.
Eur J Vasc Endovasc Surg. 1997 Oct;14(4):238-43. doi: 10.1016/s1078-5884(97)80234-1.
To compare the correlation and practicability of single-stage vs. graded treadmill protocols in the assessment of the absolute claudication distance (ACD).
Randomized open study.
In 52 patients with peripheral arterial occlusive disease, the ACD on treadmill at 3 km/h and 12% grade (constant-load test = C-test) ranged form 50 to 400 m. The C-test and the graded-exercise test (walking on the treadmill at 3 km/h and 0% gradient for 3 min, with subsequent increase in gradient of 3.5% every 3 min = G-test) were carried out at random on the same day under standardized conditions.
The ACD was higher in the G-test than in the C-test (360.4 +/- 208.8m vs. 166.5 +/- 93.6m; p < 0.001). The coefficients of variation were very similar (57.9% and 56.2%, respectively). In the subgroup of patients with an ACD of between 100 m and 150 m, a large difference was found both for the coefficient of variation (58.6% G-test, 9.6% C-test) and for the standard deviation (339.8 +/- 199.0m and 133.1 +/- 12.8m, respectively).
For the assessment of the ACD in patients with severe claudication the C-test would seem to be more suitable than the G-test.
比较单阶段与分级平板运动方案在评估绝对跛行距离（ACD）方面的相关性和实用性。
随机开放研究。
52例外周动脉闭塞性疾病患者，在3 km/h速度和12%坡度的平板运动试验中（恒定负荷试验 = C试验），ACD范围为50至400 m。C试验和分级运动试验（在3 km/h速度和0%坡度的平板上行走3分钟，随后每3分钟坡度增加3.5% = G试验）在同一天标准化条件下随机进行。
G试验中的ACD高于C试验（360.4±208.8m对166.5±93.6m；p < 0.001）。变异系数非常相似（分别为57.9%和56.2%）。在ACD为100 m至150 m的患者亚组中，变异系数（G试验为58.6%，C试验为9.6%）和标准差（分别为339.8±199.0m和133.1±12.8m）均存在较大差异。
对于重度跛行患者的ACD评估，C试验似乎比G试验更合适。
