Amor-Barbosa Marta, Salazar-Pérez Fernanda, Vendrusculo Fernanda Maria, Bagatini Maria Amélia, da Silva Aquino Evanirso, Donadio Márcio Vinícius Fagundes
Department of Physiotherapy, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya (UIC), Barcelona - Spain.
Laboratory of Pediatric Physical Activity, Infant Center, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre (RS) - Brazil.
Arch Physiother. 2024 Dec 18;14:131-137. doi: 10.33393/aop.2024.3191. eCollection 2024 Jan-Dec.
The modified shuttle test-15 (MST-15) is a valid alternative for assessing exercise capacity when a cardiopulmonary exercise testing is not feasible. This study aims to describe the percentage of healthy and cystic fibrosis (CF) children and adolescents reaching the MST-15 ceiling. Additionally, it examines associations between MST-15 distance and demographic, anthropometric, and lung function data.
This retrospective cross-sectional study involved 286 healthy volunteers (11.5 ± 3.3 years) and 70 CF patients (11.9 ± 4.4 years). Data on age, gender, weight, height, body mass index, lung function, and MST-15 were collected. The ceiling effect was determined by the absolute and relative number of participants reaching the 15th level. Univariate linear regression and correlation analyses were conducted to explore associations with MST-15 distance.
A ceiling effect for the MST-15 was found in 19 healthy participants (6.6%) and 1 CF patient (1.4%). The ceiling effect was correlated with age (r = 0.777 for healthy; r = 0.538 for CF), with no cases under 10 years and reaching 25% in healthy participants aged 17-19. Regression analysis showed significant associations between age and MST-15 distance in healthy participants (β = 53.6) and CF patients (β = 32.1). Additionally, sex was significantly associated with MST-15 distance in healthy participants (β = 107.0), and FEV with MST-15 distance in CF patients (β = 31.0).
The ceiling effect on the MST-15 is age-dependent, with no occurrences observed in children under 10 years and a gradual increase in incidence as participants age.
当心肺运动测试不可行时，改良穿梭试验-15（MST-15）是评估运动能力的有效替代方法。本研究旨在描述达到MST-15上限的健康儿童和青少年以及囊性纤维化（CF）儿童和青少年的百分比。此外，研究还考察了MST-15距离与人口统计学、人体测量学和肺功能数据之间的关联。
这项回顾性横断面研究纳入了286名健康志愿者（11.5±3.3岁）和70名CF患者（11.9±4.4岁）。收集了年龄、性别、体重、身高、体重指数、肺功能和MST-15的数据。通过达到第15级的参与者的绝对数量和相对数量来确定上限效应。进行单变量线性回归和相关分析以探索与MST-15距离的关联。
在19名健康参与者（6.6%）和1名CF患者（1.4%）中发现了MST-15的上限效应。上限效应与年龄相关（健康参与者r = 0.777；CF患者r = 0.538），10岁以下无病例，17 - 19岁的健康参与者中达到25%。回归分析显示，健康参与者（β = 53.6）和CF患者（β = 32.1）的年龄与MST-15距离之间存在显著关联。此外，健康参与者的性别与MST-15距离显著相关（β = 107.0），CF患者的第一秒用力呼气容积（FEV）与MST-15距离显著相关（β = 31.0）。
MST-15的上限效应与年龄有关，10岁以下儿童未观察到，随着参与者年龄增长发病率逐渐增加。
