Individualized Ramp Treadmill

Myers, Jonathan; Buchanan, Nancy; Smith, David J.; Neutel, Joel M.; Bowes, Eric G.; Walsh, Douglas B.; Froelicher, Victor F.

doi:10.1378/chest.101.5_supplement.236s

Cited by 8 publications

(23 citation statements)

References 32 publications

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“…Another way to obtain VO 2 max is by converting the maximal achieved workload using previously developed regression equations. the association between measured and predicted oxygen uptake, based on a previous study, suggests that the individualized ramp protocol has advantages over other protocols when the need for predicting oxygen uptake exists [13].…”

Section: Introductionmentioning

confidence: 92%

“…regarding the individualized ramp protocol, there are 2 equations recommended by the AcSM to calculate VO 2 max. the first is the Myers et al [13] regression equation, which was developed on the basis of data acquired when using a ramp protocol among 200 middle age healthy and hypertensive (24% of the subjects) adults. the other prediction equations are the AcSM walking or running metabolic equations, developed for submaximal steady-state exercise [7] and used by some stress testing manufacturer companies (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…therefore, this study examined the accuracy of 2 equations for predicting VO 2 max in young adults using an individualized ramp protocol. it was hypothesized that the Myers et al [13] and AcSM [7] equations would not accurately predict the VO 2 max of healthy young individuals using an individualized ramp protocol.…”

Section: Introductionmentioning

confidence: 99%

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The accuracy of two equations for predicting maximal oxygen uptake on individualized ramp protocol

Aguiar¹,

Moriarty²,

Baracho³

et al. 2018

Hum Mov.

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Purpose. Valid protocols use nomograms based on standardized stages to calculate maximal oxygen uptake (VO 2 max). Although the maximal ramp exercise protocol offers advantages over traditional protocols, it is not known if the non-standardized stages approach affects the accuracy to estimate VO 2 max. the study aims to examine the accuracy of 2 equations for predicting VO 2 max in a maximal ramp exercise test. Methods. Overall, 11 men (age: 26 ± 5 years, height: 178 ± 7 cm, weight: 77.6 ± 9.9 kg) underwent 3 sessions of a maximal ramp test on a motorized treadmill; the speed increments were equal but with 0, 3, and 6% grades. Expired gases were analysed with a portable metabolic system. the VO 2 max measured was set as the highest mean value observed from 7 consecutive breaths and it was predicted from 2 equations: American college Sports Medicine (AcSM) and Myers. Results. VO2max predicted by AcSM equation (54.3 ± 6.7 mL • kg-1 • min-1) was approximately 10 ± 10% higher and by Myers equation (30.6 ± 6.1 mL • kg-1 • min-1) approximately 38 ± 11% lower than directly measured (49.6 ± 6.7 mL • kg-1 • min-1 , p < 0.05). Bland-Altman graphs indicate low and no agreement for AcSM and Myers equations, respectively. the calculated standard error of the estimates was 6.5 mL • kg-1 • min-1 for AcSM equation and 19.9 mL • kg-1 • min-1 for Myers equation. Conclusions. the AcSM and Myers equations significantly over-and under-predict the VO 2 max of young adults, respectively. Although the former overestimated VO 2 max, we recommend its use with caution.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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The accuracy of two equations for predicting maximal oxygen uptake on individualized ramp protocol

Aguiar¹,

Moriarty²,

Baracho³

et al. 2018

Hum Mov.

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“…A partir dos METs derivados do VSAQ e idade foi utilizado um nomograma (MYERS et al, 1992) para determinar a capacidade máxima de trabalho de cada voluntário: METs = 4,7 + 0,97 (VSAQ) -0,06 (idade).…”

Section: Teste De Aptidão Físicaunclassified

A Obesidade Na População Adulta De Diamantina: Orientações Para a Saúde, Caracterização Antropométrica, Bioquímica E De Aptidão Cardiorrespiratória

Garcia

Matos

Pinhal

et al. 2016

Rev. Bras. Ext. Universit.

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Resumo: Este estudo caracterizou indivíduos adultos obesos que participaram de um programa de atividades de extensão composto por orientações nutricionais no município de Diamantina-MG. Foram recrutados 42 indivíduos obesos (7 homens e 35 mulheres, índice de massa corporal [IMC] de 36,5 ± 4,3 kg m-2) com idade entre 19 e 56 anos. Todos os voluntários foram submetidos à avaliação do IMC, circunferência da cintura (CC) e percentual de gordura, glicemia e insulinemia de jejum, teste de tolerância oral à glicose (TTOG) triglicérides, colesterol total e frações e aptidão cardiorrespiratória. Dos 42 participantes, onze indivíduos apresentaram resistência à insulina, onze aumento na insulina de jejum (26%) e sete (17%) apresentaram aumento na glicemia de jejum e/ou alteração no TTOG. Vinte e quatro porcento dos participantes apresentaram concentração de triglicerídeos elevada, 48% apresentaram HDL-colesterol reduzido e noventa e quatro por cento dos participantes apresentaram CC acima do valor recomendado pela Organização Mundial de Saúde. Os participantes do estudo apresentaram um consumo máximo de oxigênio médio menor que 21 ml kg-1 min-1, indicando um baixo condicionamento cardiorrespiratório. Parte dos participantes do estudo (n=10, 23%) participaram de uma oficina de orientação nutricional que possibilitou uma ampla discussão sobre a obesidade, seus impactos na saúde, e a necessidade de se adotar hábitos de vida saudáveis. Palavras-chave: Extensão Universitária, Excesso de Peso, Resistência à Insulina, Sedentarismo. Obesity in the adult population of Diamantina city: health guidelines, anthropometric, biochemical and cardiorespiratory fitness characterization Abstract: This study characterized obese adults who participated in an outreach program activity on nutrition education in the city of Diamantina, Minas Gerais State, Brazil. 42 obese subjects, aged between 19 and 56 years old, were recruited (7 men and 35 women, body mass index [BMI] of 36.5 ± 4.3 kg m-2). All subjects underwent assessment of BMI, waist circumference (WC), body fat percentage, blood glucose, fasting insulin, oral glucose tolerance test (OGTT), triglycerides, total cholesterol and its fractions, and cardiorespiratory fitness. Of the 42 participants, eleven had insulin resistance, eleven had high fasting insulin (26%), and seven (17%) showed high fasting glucose and/or altered OGTT. Twenty-four percent of the participants showed high concentration of triglycerides, 48% had low HDL-cholesterol and ninety-four percent of the participants had WC greater than what is recommended by the World Health Organization. The participants had a maximum oxygen consumption rate average less than ml kg-1 min-1, which indicates a low cardiorespiratory conditioning. Part of the subjects of the study (n = 10, 23%) attended to a nutritional orientation workshop that allowed a wide discussion on obesity, its impact on health, and the need of having healthy lifestyle habits. Keywords: Continuing Education, Overweight, Insulin Resistance, Inactivity. La obesidad en la población adulta en la ciudad de Diamantina: directrices de salud, caracterización antropométrica, bioquímica y de la capacidad cardiorrespiratoria Resumen: En este estudio se caracterizaron adultos obesos que participaron de un programa de actividades de extensión que tuvo el objetivo de ofrecer orientaciones nutricionales en el municipio de Diamantina, Minas Gerais, Brasil. Fueron analizados 42 individuos obesos (7 hombres y 35 mujeres, índice de masa corporal [ICM] de 36,5 ± 4,3 kg m-2) con edades entre los 19 y 56 años. Todos los voluntarios fueron sometidos a una evaluación de ICM, circunferencia de la cintura (CC), y porcentaje de grasa, glucemia e insulinemia en ayunas, test de tolerancia oral a la glucosa (TTOG), triglicéridos, colesterol total y fracciones, de aptitud cardiorrespiratoria. De los cuarenta y dos participantes, once sujetos presentaron resistencia a la insulina, once presentaron aumento en la insulina en ayunas (el 26%) y siete (el 17%) presentaron aumento de glucemia en ayunas y/o alteración en TTOG. El Veinticuatro por ciento de los participantes presentaron concentración elevada de triglicéridos, el 48% presentaron HDL-colesterol reducido y el noventa y cuatro por ciento de los participantes presentaron CC demasiado alto y no recomendable por la Organización Mundial de la Salud. Los participantes de este estudio presentaron un consumo máximo de oxígeno medio menor que 21 ml kg-1 min-1, indicando un bajo acondicionamiento cardiorrespiratorio. Parte de los participantes del estudio (n=10, 23%) participaron de un taller de orientación nutricional que facilitó una amplia discusión sobre la obesidad, sus impactos en la salud, y la necesidad de adoptar hábitos de vida saludable. Palabras-clave: Extensión Universitaria, Sobre Peso, Resistencia a La Insulina, Sedentarismo.

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“…medium" or "hard"), the protocol uses a continuous change in speed and brings the subjects to exhaustion in approximately 2 minutes and 30 seconds to 20 minutes; this meets the criteria for clinical exercise testing issues by the relevant international organizations (American College of Sports Medicine 2000, American Thoracic Society 2003,[33,34,35]). …”

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confidence: 99%

Humans are able to self-paced constant running accelerations until exhaustion

Billat

Brunel

Carbillet

et al. 2018

Physica A: Statistical Mechanics and its Applications

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Although it has been experimentally reported that speed variations is the optimal way of optimizing his pace for achieving a given distance in a minimal time, we still do not know what the optimal speed variations (i.e accelerations) are. At first, we have to check the hypothesis that human is able to accurately self-pacing its acceleration and this even in a state of fatigue during exhaustive self-pacing ramp runs. For that purpose, 3 males and 2 females middle-aged, recreational runners ran, in random order, three exhaustive acceleration trials. We instructed the five runners to perform three self-paced acceleration trials based on three acceleration intensity levels: "soft", "medium" and "hard". We chose a descriptive modeling approach to analyse the behaviour of the runners. Once we knew that

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Individualized Ramp Treadmill

Cited by 8 publications

References 32 publications

The accuracy of two equations for predicting maximal oxygen uptake on individualized ramp protocol

The accuracy of two equations for predicting maximal oxygen uptake on individualized ramp protocol

A Obesidade Na População Adulta De Diamantina: Orientações Para a Saúde, Caracterização Antropométrica, Bioquímica E De Aptidão Cardiorrespiratória

Humans are able to self-paced constant running accelerations until exhaustion

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