Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people

Detalhes bibliográficos
Autor(a) principal: Cano Izquierdo, Mireia
Data de Publicação: 2018
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/25179
Resumo: Background: Hypertension is a condition which affects more than a billion people worldwide. It is directly related with developing cardiovascular and renal events. Maximal oxygen uptake (VO2max) has become one of the greatest predictors of health and fitness. Cardiorespiratory fitness tests are important to evaluate exercise programs and to encourage individuals to adopt an active lifestyle.The direct assessment of VO2max is an expensive and time-­consuming procedure. The Chester Step test is a submaximal test already validated in healthy subjects, if proven valid could be used for estimation of VO2max in the context of hypertension. Objectives: To validate the Chester Step test for estimating the VO2max in hypertensive adults. A secondary aim was to study the influence of different formulas for age predicted maximal heart rate when estimating VO2max by the Chester Step test. Methods: Eleven adults with hypertension (36.4% females), mean age 53.9 ± 7.4 years participated in the study. They performed in the same day the Chester step test and a maximal cycloergometer test, in which VO2, heart rate and blood pressure were assessed. Results: A strong and positive correlation was found between the measured and the estimated VO2max, ranging from r=0.982 to r=0.986 (p<0.01) depending on which age-­predicted formulas was used to predict the HRmax. The best prediction was obtained when Fox-­Haskell formula (220-­age) was used. No difference was observed for the Fox-­Haskell formula [mean diff (95% CI): -­0.319 (-­1.248 – 0.610), p=0.462];; the limits of agreement range from 3.03 to -­2.4 ml·Kg-­1·min-­1. Conclusions: Despite the fact that the Chester step test tends to overestimate VO2max, the test is a valid and promising tool for assessing hypertensive adults
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spelling Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive peopleChester step testHypertensionVO2maxPhysical activity aerobic powerBackground: Hypertension is a condition which affects more than a billion people worldwide. It is directly related with developing cardiovascular and renal events. Maximal oxygen uptake (VO2max) has become one of the greatest predictors of health and fitness. Cardiorespiratory fitness tests are important to evaluate exercise programs and to encourage individuals to adopt an active lifestyle.The direct assessment of VO2max is an expensive and time-­consuming procedure. The Chester Step test is a submaximal test already validated in healthy subjects, if proven valid could be used for estimation of VO2max in the context of hypertension. Objectives: To validate the Chester Step test for estimating the VO2max in hypertensive adults. A secondary aim was to study the influence of different formulas for age predicted maximal heart rate when estimating VO2max by the Chester Step test. Methods: Eleven adults with hypertension (36.4% females), mean age 53.9 ± 7.4 years participated in the study. They performed in the same day the Chester step test and a maximal cycloergometer test, in which VO2, heart rate and blood pressure were assessed. Results: A strong and positive correlation was found between the measured and the estimated VO2max, ranging from r=0.982 to r=0.986 (p<0.01) depending on which age-­predicted formulas was used to predict the HRmax. The best prediction was obtained when Fox-­Haskell formula (220-­age) was used. No difference was observed for the Fox-­Haskell formula [mean diff (95% CI): -­0.319 (-­1.248 – 0.610), p=0.462];; the limits of agreement range from 3.03 to -­2.4 ml·Kg-­1·min-­1. Conclusions: Despite the fact that the Chester step test tends to overestimate VO2max, the test is a valid and promising tool for assessing hypertensive adultsEnquadramento: A hipertensão é uma condição que afeta mais de um bilhão de pessoas no mundo. Está direitamente relacionada com o desenvolvimento de eventos cardio-­ e cerebrovasculares e/ou renais. O consumo máximo de oxigénio (VO2max) é um dos maiores preditores de saúde. Os testes para avaliar a capacidade cardiorrespiratória são importantes para avaliar os programas de exercício e encorajar os indivíduos a adotar um estilo de vida ativo. A avaliação direta do VO2max é um processo caro e demorado. O Chester Step test é um teste submáximo já validado em indivíduos saudáveis que, se provar a sua validade em adultos hipertensos, poderá ser usado para estimar o VO2max no contexto da hipertensão. Objetivos: Validar o Chester Step test para predizer o VO2max em adultos hipertensos. O objetivo secundário foi estudar a influência de diferentes fórmulas para determinar a frequência cardíaca máxima prevista para a idade ao estimar o VO2max pelo Chester Step test. Métodos: Onze adultos hipertensos (36,4% mulheres) com idade média de 53,9 ± 7,4 anos participaram no estudo. Realizaram no mesmo dia o Chester Step test e um teste de exercício máximo em cicloergómetro no qual foram avaliados o VO2, a frequência cardíaca e a pressão arterial. Resultados: Foi encontrada uma correlação forte e positiva entre o VO2max medido e o estimado, entre r=0.982 e r=0.986 (p<0.01), dependendo da formula usada para predizer a frequência cardíaca máxima. A melhor estimação foi obtida com o uso da formula Fox-­Haskell (220-­idade). O VO2max estimado pelo Chester Step test usando a formula Fox-­Haskell não foi significativamente diferente do medido no teste em cicloergómetro [dif média (95%IC): -­0.319 (-­1.248 – 0.610), p=0.462];; os limites de concordância foram de 3,03 a -­2,4 ml·Kg-­ 1·min-­1. Conclusão: Apesar de tender a sobrestimar o VO2max real, o Chester Step test é uma ferramenta válida e promissora na avaliação de adultos hipertensos2020-12-27T00:00:00Z2018-12-07T00:00:00Z2018-12-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/25179engCano Izquierdo, Mireiainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:49:03Zoai:ria.ua.pt:10773/25179Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:58:34.719864Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
title Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
spellingShingle Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
Cano Izquierdo, Mireia
Chester step test
Hypertension
VO2max
Physical activity aerobic power
title_short Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
title_full Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
title_fullStr Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
title_full_unstemmed Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
title_sort Validity of the Chester step test for predicting aerobic power and prescribe physical activity in hypertensive people
author Cano Izquierdo, Mireia
author_facet Cano Izquierdo, Mireia
author_role author
dc.contributor.author.fl_str_mv Cano Izquierdo, Mireia
dc.subject.por.fl_str_mv Chester step test
Hypertension
VO2max
Physical activity aerobic power
topic Chester step test
Hypertension
VO2max
Physical activity aerobic power
description Background: Hypertension is a condition which affects more than a billion people worldwide. It is directly related with developing cardiovascular and renal events. Maximal oxygen uptake (VO2max) has become one of the greatest predictors of health and fitness. Cardiorespiratory fitness tests are important to evaluate exercise programs and to encourage individuals to adopt an active lifestyle.The direct assessment of VO2max is an expensive and time-­consuming procedure. The Chester Step test is a submaximal test already validated in healthy subjects, if proven valid could be used for estimation of VO2max in the context of hypertension. Objectives: To validate the Chester Step test for estimating the VO2max in hypertensive adults. A secondary aim was to study the influence of different formulas for age predicted maximal heart rate when estimating VO2max by the Chester Step test. Methods: Eleven adults with hypertension (36.4% females), mean age 53.9 ± 7.4 years participated in the study. They performed in the same day the Chester step test and a maximal cycloergometer test, in which VO2, heart rate and blood pressure were assessed. Results: A strong and positive correlation was found between the measured and the estimated VO2max, ranging from r=0.982 to r=0.986 (p<0.01) depending on which age-­predicted formulas was used to predict the HRmax. The best prediction was obtained when Fox-­Haskell formula (220-­age) was used. No difference was observed for the Fox-­Haskell formula [mean diff (95% CI): -­0.319 (-­1.248 – 0.610), p=0.462];; the limits of agreement range from 3.03 to -­2.4 ml·Kg-­1·min-­1. Conclusions: Despite the fact that the Chester step test tends to overestimate VO2max, the test is a valid and promising tool for assessing hypertensive adults
publishDate 2018
dc.date.none.fl_str_mv 2018-12-07T00:00:00Z
2018-12-07
2020-12-27T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/25179
url http://hdl.handle.net/10773/25179
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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