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- Reference values for the 1-minute sit-to-stand and 5 times sit-to-stand tests to assess functional capacity: a cross-sectional studyPublication . Vilarinho, Rui; Mesquita Montes, António; Noites, Andreia; Silva, Fátima; Melo, CristinaTo establish age-specific and sex-specific reference values and equations for the 1-minute sit-to-stand (1MSTS) and 5 times sit-to-stand (5TSTS) tests for Portuguese adults. Cross-sectional study. Descriptive statistics were explored to compute reference values and reference equations were established with a forward stepwise multiple regression. Community. In total, 546 adult volunteers without disabilities [age range 18 to 95 years; 58% female] were recruited. Data on age, sex, height, weight, body mass index (BMI), smoking status and physical activity were collected using a structured questionnaire developed specifically for this study. Participants performed three repetitions of the 1MSTS and 5TSTS and the best repetition was used for analysis. Normative values were provided by sex for each age decade. Reference equations were: 1MSTS= 61.53 – (0.34 x age) – (3.57 x sex) – (0.33 x BMI), r2=26%; and 5TSTS=3.89 + (0.10 x age) - (0.96 x physical activity), r2=27%. The proposed reference values and equations will help to interpret the results of functional capacity obtained from healthy or diseased adult populations.
- Reference equation of a new incremental step test to assess exercise capacity in the portuguese adult populationPublication . Vilarinho, Rui; Toledo, Ana; Silva, Carla; Melo, Fábio; Tomaz, Leila; Martins, Luana; Gonçalves, Tânia; Melo, Cristina; Caneiras, Cátia; Mesquita Montes, AntónioStep tests are important in community- and home-based rehabilitation programs to assess patients’ exercise capacity. A new incremental step test was developed for this purpose, but its clinical interpretability is currently limited. This study aimed to establish a reference equation for this new incremental step test (IST) for the Portuguese adult population. A cross-sectional study was conducted on people without disabilities. Sociodemographic (age and sex), anthropometric (weight, height, and body mass index), smoking status, and physical activity (using the brief physical activity assessment tool) data were collected. Participants performed two repetitions of the IST and the best test was used to establish the reference equation with a forward stepwise multiple regression. An analysis comparing the results from the reference equation with the actual values was conducted with the Wilcoxon test. A total of 155 adult volunteers were recruited (60.6% female, 47.8 ± 19.7 years), and the reference equation was as follows: steps in IST = 475.52 − (4.68 × age years) + (30.5 × sex), where male = 1 and female = 0, and r2 = 60%. No significant differences were observed between the values performed and those obtained by the equation (p = 0.984). The established equation demonstrated that age and sex were the determinant variables for the variability of the results.