ABSTRACT
SUMMARY OBJECTIVE: The objectives of this study were to translate and cross-culturally adapt the telehealth usability questionnaire into Brazilian Portuguese and to evaluate its psychometric properties. METHODS: This was a methodological validation study carried out in two phases. In phase 1, the telehealth usability questionnaire was cross-culturally adapted with 10 participants comprising the expert committee members, including 5 healthcare professionals with theoretical and practical knowledge of telehealth, 1 methodologist, and 4 translators. This phase was performed at Universidade Federal de Juiz de Fora Physiotherapy Clinic School. In phase 2, the psychometric properties of telehealth usability questionnaire Brazil were analyzed. This phase included in-person assessments at Márcio Cunha Hospital, Minas Gerais. The recruitment period for both phases was from April 2020 to February 2021. Content validity, reliability, internal consistency, and criterion validity were analyzed. The criterion validity was evaluated using correlation with a validated instrument: the system usability scale. RESULTS: The telehealth usability questionnaire was adequately translated and cross-culturally adapted. The telehealth usability questionnaire Brazil presented an excellent content validity index of 0.96 with percentages of understanding higher than 90%. The telehealth usability questionnaire Brazil demonstrated great internal consistency (α=0.94 and ω=0.94), excellent intra-rater reliability (intraclass correlation coefficient=0.85, 95%CI 0.75-0.91), no difference between the test and retest [T (0.425), p>0.673], and no proportional bias (p=0.205). There was a moderate correlation between telehealth usability questionnaire Brazil and the system usability scale (r=0.52, p<0.0001). CONCLUSION: The telehealth usability questionnaire was adequately translated and cross-culturally adapted into Brazilian Portuguese and showed adequate psychometric properties for use in telehealth clinical practice and research in Brazilian-Portuguese-speaking individuals.
ABSTRACT
Abstract Aim: This study aimed to compare the performance, metabolic, hemodynamic, and perceived exertion during the 6-minute step test (6MST) conducted with different step heights in healthy subjects and also to compare the performance between different age groups for each step height. The association between age, body mass index, level of physical activity, and lower limb measurements with performance were also evaluated. Methods: This is a cross-sectional study. Anthropometric measures, physical performance, and cardiovascular stress were evaluated during a self-paced 6MST with different step heights in healthy subjects in the age group of 18-59. All the participants underwent three-step tests (15 cm, 20 cm, and 30 cm) on the same day, in a randomized order. Results: Forty participants (20 men and 20 women) performed the tests. The performance in the test for the highest step was significantly lower compared to the step with the lowest height (152 ± 24 vs. 173 ± 27 and 184 ± 33; p < 0,05). The estimated peak oxygen consumption (VO2peak) increased by ∼2.5 mL.kg−1·min−1 with the increase in step height. Hemodynamic variables, such as percent of maximum heart rate (%HRmáx), and systolic blood pressure increased as the step height increased. There was a fair correlation between performance and the level of physical activity in the test with a step height of 15 cm and 20 cm. Conclusion: A higher step height caused greater cardiovascular stress, without exceeding the submaximal levels of the test, indicating that the 6MST can be used as an accurate instrument for evaluating aerobic capacity in healthy individuals.
Subject(s)
Humans , Exercise Test/methods , Walk Test/methods , Anthropometry/methods , Cross-Sectional Studies/instrumentation , Physical Functional PerformanceABSTRACT
Introdução: A asma é uma doença respiratória caracterizada por sintomas como sibilo à ausculta pulmonar, dispneia e tosse, causados por limitação variável ao fluxo aéreo expiratório. A prática de atividades física pode auxiliar o controle da doença. Objetivo: Investigar o nível de atividade física de asmáticos adultos, e como estes indivíduos reportam receber orientação dos profissionais de saúde quanto à realização de atividade física. Método: Este estudo de métodos mistos foi realizado com indivíduos asmáticos, com idade superior a 18 anos. Os participantes realizaram teste de função pulmonar, responderam questionários sobre atividade física e entrevista semiestruturada. A entrevista foi realizada com questões voltadas ao tema central da pesquisa, as respostas foram transcritas de forma literal e analisadas por meio de metodologia da análise de conteúdo. Resultados: Vinte e cinco indivíduos participaram do estudo, a maioria do sexo feminino (n = 18; 72,0%) e idade média de 36 anos. A maioria dos indivíduos eram "irregularmente ativos" dos tipos A e B (n = 13; 52,0%). Foram identificados sete temas principais nos discursos: "conhecimento sobre os efeitos da atividade física regular" (n = 23; 92,0%), "atividade física específica para pacientes asmáticos" (n = 21; 84,0%), e "influência da orientação de um profissional de saúde" (n = 20; 80,0%). Conclusão: Os indivíduos asmáticos reportaram receber orientações dos profissionais de saúde quanto aos benefícios da prática regular de atividade física. Porém, estas informações podem ser insuficientes quanto ao tipo e frequência dos exercícios, modalidades apropriadas, manejo de possíveis sintomas durante ou após a prática da atividade e como preveni-los. Orientações adequadas sobre a prática da atividade regular para indivíduos asmáticos podem contribuir para o automanejo da doença.
Introduction: Asthma is a respiratory disease characterized by symptoms of wheezing, dyspnea, and cough, caused by some degree of limitation to expiratory airflow. Engagement in regular physical activity can help control the disease. Objective: To assess physical activity levels in asthmatic adults and to investigate how these individuals report guidance received from health professionals regarding physical activity. Method: This mixed-methods study included asthmatic adults aged 18 years or over. Participants underwent pulmonary function tests, completed physical activity questionnaires, and did a semistructured interview. The interview consisted of questions focused on the central topic of interest, and responses were transcribed literally and then analyzed using content analysis methods. Results: Twenty-five individuals participated in the study, most were female (n=18; 72.0%), and mean age was 36 years. Most individuals were classified as "irregularly active" (n=8; 32.0%). Seven main topics were identified in content analysis, including "knowledge about the effects of regular physical activity" (n=23; 92.0%), "specific physical activity for asthmatic patients" (n=21; 84.0%), and "influence of guidance from a health professional" (n=20; 80.0%). Conclusion: Asthmatic individuals reported having received guidance from health professionals regarding the benefits of engagement in regular physical activity. However, there is insufficient information regarding type and frequency of exercise, appropriate modalities, and management of possible symptoms during or after the activity and how to prevent them. Adequate guidance on regular activity for asthmatic individuals may contribute to self-management of the disease.