Vilarinho Rui, Mendes Ana Rita, Gomes Mariana, Ferreira Rui, Costa Fabíola, Machado Marcela, Neves Márcia, Caneiras Cátia, Montes António Mesquita
Center for Rehabilitation Research (CIR), Department of Physiotherapy, Polytechnic Institute of Porto, School of Health, 4200-072 Porto, Portugal.
Healthcare Department, Nippon Gases Portugal, 2600-242 Lisbon, Portugal.
Healthcare (Basel). 2021 Mar 10;9(3):308. doi: 10.3390/healthcare9030308.
Chester step test (CST) estimates the exercise capacity through a submaximal response, which can limit its application in the prescription of exercise. This study aimed to assess whether an adaptation of the CST (with a progressive profile) can have maximal response characteristics in young women and compare it to the incremental shuttle walk test (ISWT). Another aim was to determine its within-day test-retest reliability. A cross-sectional study was conducted with 25 women (20.3 ± 1.5 years) who performed the field tests twice on two different days (48 h apart). The maximal effort attainment was assessed by the heart rate (HR), perception of exertion (Borg scale), and blood lactate concentration. For the performance variables, Pearson's correlation and intraclass correlation coefficient (ICC) were used. In the best test, mean values of maximal response were observed in the adapted CST (94.0 ± 6.5% of age-predicted HR, 11.3 ± 4.5 mmol/dl of blood lactate, and 18.4 ± 1.5 of Borg rating). The correlations between the adapted CST and the ISWT were weak to moderate (0.38 ≤ r ≤ 0.55; < 0.05). Fair to good reliability was found for the adapted CST (ICC = 0.48-0.61). The adapted CST showed mean values of maximal response, weak to moderate association with the ISWT, and low within-day test-retest reliability in young women.
切斯特台阶试验（CST）通过次最大反应来评估运动能力，这可能会限制其在运动处方中的应用。本研究旨在评估改良后的CST（具有渐进性）在年轻女性中是否具有最大反应特征，并将其与递增往返步行试验（ISWT）进行比较。另一个目的是确定其日内重测信度。对25名女性（20.3±1.5岁）进行了一项横断面研究，她们在两个不同的日子（间隔48小时）进行了两次现场测试。通过心率（HR）、运动感知（Borg量表）和血乳酸浓度来评估最大努力程度。对于性能变量，使用了皮尔逊相关性和组内相关系数（ICC）。在最佳测试中，改良后的CST观察到最大反应的平均值（年龄预测心率的94.0±6.5%、血乳酸11.3±4.5mmol/dl、Borg评分18.4±1.5）。改良后的CST与ISWT之间的相关性较弱至中等（0.38≤r≤0.55；P<0.05）。改良后的CST具有中等至良好的信度（ICC=0.48-0.61）。改良后的CST在年轻女性中显示出最大反应的平均值、与ISWT的相关性较弱至中等，以及日内重测信度较低。
