Evaluation of a specific activity questionnaire to predict mortality in men referred for exercise testing

2006 ◽  
Vol 151 (4) ◽  
pp. 890.e1-890.e7 ◽  
Author(s):  
Paul McAuley ◽  
Jonathan Myers ◽  
Joshua Abella ◽  
Victor Froelicher
2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Sidney C. da Silva ◽  
Walace D. Monteiro ◽  
Felipe A. Cunha ◽  
Jonathan Myers ◽  
Paulo T. V. Farinatti

This study compared strategies to define final and initial speeds for designing ramp protocols.VO2max was directly assessed in 117 subjects (29±8 yrs) and estimated by three nonexercise models: (1) Veterans Specific Activity Questionnaire (VSAQ); (2) Rating of Perceived Capacity (RPC); (3) Questionnaire of Cardiorespiratory Fitness (CRF). Thirty seven subjects (30±9 yrs) performed three additional tests with initial speeds corresponding to 50% of estimatedVO2max and 50% and 60% of measuredVO2max . Significant differences(P<0.001)were found betweenVO2max measured (41.5±6.6 mL·kg−1·min−1) and estimated by VSAQ (36.6±6.6 mL·kg−1·min−1) and CRF (45.0±5.3 mL·kg−1·min−1), but not RPC (41.3±6.2 mL·kg−1·min−1). The CRF had the highest ICC, the lowest SEE, and better limits of agreement withVO2max compared to the other instruments. Initial speeds from 50%–60%VO2max estimated by CRF or measured produced similarVO2max (40.7±5.9;40.0±5.6;40.3±5.5 mL·kg−1·min−1resp.,P=0.14). The closest relationship to identity line was found in tests beginning at 50%VO2max estimated by CRF. In conclusion, CRF was the best option to estimateVO2max and therefore to define the final speed for ramp protocols. The measuredVO2max was independent of initial speeds, but speeds higher than 50%VO2max produced poorer submaximal relationships between workload andVO2.


2001 ◽  
Vol 142 (6) ◽  
pp. 1041-1046 ◽  
Author(s):  
Jonathan Myers ◽  
David Bader ◽  
Rupa Madhavan ◽  
Victor Froelicher

2006 ◽  
Vol 11 (6) ◽  
pp. 313-320 ◽  
Author(s):  
Shinji Kojima ◽  
Da-Hong Wang ◽  
Kimihiko Tokumori ◽  
Noriko Sakano ◽  
Yukie Yamasaki ◽  
...  

2011 ◽  
Vol 97 (2) ◽  
pp. 130-135 ◽  
Author(s):  
Geraldo de Albuquerque Maranhão-Neto ◽  
Antonio Carlos Ponce de Leon ◽  
Paulo de Tarso Veras Farinatti

2011 ◽  
Vol 45 (2) ◽  
pp. 276-285 ◽  
Author(s):  
Gabriela de Barros Leite Domingues ◽  
Maria Cecília Gallani ◽  
Claudio Alexandre Gobatto ◽  
Cinthya Tamie Passos Miura ◽  
Roberta Cunha Matheus Rodrigues ◽  
...  

OBJETIVO: Validar o conteúdo e avaliar a confiabilidade do instrumento Veterans Specific Activity Questionnaire, adaptado culturalmente para uso na população brasileira de cardiopatas. MÉTODOS: O instrumento foi traduzido, retrotraduzido e analisado por comitê de juízes para avaliação das equivalências semântico-idiomática e cultural. As atividades físicas indicadas no instrumento incomuns ao cotidiano da população-alvo foram substituídas. Outro comitê de especialistas analisou a equivalência metabólica das atividades substituídas. A proporção de concordância de avaliação dos juízes foi quantificada pelo Índice de Validade de Conteúdo. O pré-teste foi realizado em duas etapas (n1 e n2 = 15). A confiabilidade foi avaliada por meio do teste re-teste (intervalo de 7-15 dias, n = 50). RESULTADOS: Na avaliação das equivalências semântico-idiomática e cultural, os itens com Índice de Validade de Conteúdo < 1 foram revisados até obtenção de consenso entre os juízes. Constatou-se 100% de concordância do segundo comitê na análise da equivalência metabólica entre as atividades originais e as substituídas. Análise do teste re-teste apontou coeficiente de concordância kappa (k = 0,86; p < 0,001), sugerindo estabilidade temporal do instrumento. CONCLUSÕES: A versão validada do Veterans Specific Activity Questionnaire apresentou evidências de confiabilidade segundo critério de estabilidade temporal e conteúdo cultural adequado.


2019 ◽  
Vol 6 (1) ◽  
pp. e000351 ◽  
Author(s):  
Filip Gawecki ◽  
Jonathan Myers ◽  
Claire L. Shovlin

IntroductionAssessment of performance status is an important component of clinical management of patients with pulmonary arteriovenous malformations (PAVMs). Usual methods are time-consuming and insensitive to variations within normal or supranormal exercise capacity.MethodsThe Veterans Specific Activity Questionnaire (VSAQ) was modified to facilitate completion by patients independently. Patient-reported activity limitations were converted to the Medical Research Council (MRC) Dyspnoea Scale, New York Heart Association (NYHA) classification and metabolic equivalents (METs) in which 1 MET equals the consumption of 3.5 mL O2 per kilogram of body weight per minute.ResultsThe study population consisted of 71 patients with PAVMs aged 20–85 (median 52) years. Oxygen saturation (SaO2) was 80%–99.5 % (median 96%), and haemoglobin was 73–169 g/L in women and 123–197 g/L in men (p<0.0001). Arterial oxygen content (CaO2) (1.34 × [haemoglobin × SaO2]/100) was maintained unless iron deficiency was present. Most patients (49/71, 69%) did not need to stop until activities more energetic than walking briskly at 4 mph were achieved (6.4 km per hour, VSAQ >5, MRC Dyspnoea Scale 1 or 2, NYHA class I). SaO2 was inversely associated with the MRC Dyspnoea Scale and NYHA class, but not the VSAQ. Raw VSAQ scores captured a marked difference between men and women. METs were also higher in men at 3.97–15.55 (median 8.84) kcal/kg/min, compared with 1.33–14.4 (median 8.25) kcal/kg/min (p=0.0039). There was only a modest association between METs and SaO2 (p=0.044), but a stronger association between METs and haemoglobin (p =0.001). In crude and sex-adjusted regression, the CaO2 was more strongly associated with METs than either SaO2 or haemoglobin in isolation.ConclusionThe VSAQ, capturing patient-reported outcome measures, is an efficient and quantifiable measure of exercise capacity that can be readily employed in clinical services particularly where patients have normal to high exercise tolerance. In the PAVM population, exercise capacity reflects haemoglobin and CaO2 more than SaO2, even where SaO2 measurements are low.


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