Effect of ramp slope on determination of aerobic parameters from the ramp exercise test

Davis, James A.; Whipp, Brian J.; Lamarra, N.; Huntsman, D. J.; Frank, Marianne H.; Wasserman, Karlman

doi:10.1249/00005768-198205000-00005

Cited by 178 publications

(143 citation statements)

References 0 publications

Supporting

Mentioning

124

Contrasting

Unclassified

Order By: Relevance

“…ΔWR/Δt does not affect peak oxygen uptake (V′O 2 peak) [22] (online supplementary material). However, no recommendations have been developed for respiratory disease populations.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Use of exercise testing in the evaluation of interventional efficacy: an official ERS statement

et al. 2016

View full text Add to dashboard Cite

This document reviews 1) the measurement properties of commonly used exercise tests in patients with chronic respiratory diseases and 2) published studies on their utilty and/or evaluation obtained from MEDLINE and Cochrane Library searches between 1990 and March 2015.Exercise tests are reliable and consistently responsive to rehabilitative and pharmacological interventions. Thresholds for clinically important changes in performance are available for several tests. In pulmonary arterial hypertension, the 6-min walk test (6MWT), peak oxygen uptake and ventilation/carbon dioxide output indices appear to be the variables most responsive to vasodilators. While bronchodilators do not always show clinically relevant effects in chronic obstructive pulmonary disease, high-intensity constant work-rate (endurance) tests (CWRET) are considerably more responsive than incremental exercise tests and 6MWTs. High-intensity CWRETs need to be standardised to reduce interindividual variability. Additional physiological information and responsiveness can be obtained from isotime measurements, particularly of inspiratory capacity and dyspnoea. Less evidence is available for the endurance shuttle walk test. Although the incremental shuttle walk test and 6MWT are reliable and less expensive than cardiopulmonary exercise testing, two repetitions are needed at baseline. All exercise tests are safe when recommended precautions are followed, with evidence suggesting that no test is safer than others. @ERSpublications A review of exercise testing to evaluate interventions aimed to improve exercise tolerance in respiratory patients

show abstract

“…ΔWR/Δt does not affect peak oxygen uptake (V′O 2 peak) [22] (online supplementary material). However, no recommendations have been developed for respiratory disease populations.…”

Section: Methodsmentioning

confidence: 99%

“…A ΔWR/Δt of 5-10 W·min −1 may be used in more severe patients to ensure a sufficient test duration [3,18]. However, as oxygen uptake lags WR throughout the IET, peak WR (WRpeak) will be higher the more rapidly WR is incremented [22] (online supplementary material).…”

Section: Methodsmentioning

confidence: 99%

Use of exercise testing in the evaluation of interventional efficacy: an official ERS statement

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A suitable slope of the ramp (the increase in work rate per minute) was determined for each child based on our own initial studies and the previous demonstrations that the AT determined by gas exchange techniques is independent of the ramp slope (8). In general, for children from 6 to 9 years of age, the ramp slope was 10 W/min; from 10-13, 15 W/min; and from 14-17,20 W/ min.…”

Section: Methodsmentioning

confidence: 99%

Growth-related Changes in Oxygen Uptake and Heart Rate during Progressive Exercise in Children

1984

Self Cite

View full text Add to dashboard Cite

SummaryAlthough body size and muscle mass increase considerably during growth in children, certain aerobic responses to exercise appear to be regulated so that the delivery of oxygen to muscle is maintained at optimized levels. We proposed that the relationship between oxygen uptake, (Voz) and heart rate (HR) was one of the regulated responses. We further hypothesized that the increase in Vo2 per increase in HR during progressive exercise would differ in subjects of different size, but when normalized to body weight would be constant since changes in muscle mass are highly correlated to changes in body mass. To test this, we performed a cross-sectional study of 107 normal children, 50 girls and 57 boys ranging in age from 6 to 17 years. The protocol consisted of a continuously increasing work rate on a cycle ergometer, to the limit of the child's tolerance (ramp forcing function). Gas exchange was measured breath-by-breath for the determination of Voz, and heart rate was measured beat-by-beat. We used linear regression techniques to.determine M, the slope, and B, t h e y intercept of the equation: Vo2 = M X HR -B. In both boys and girls, M increased significantly with body weight, but when normalized for body weight (Mlkg), there was no systematic change with increasing weight or age, the mean value being 0.33 +I 0.10 ml/min/kg (SD). The mean value for the boys was 0.37 f 0.10 which was significantly greater than that of the girls (0.29 f 0.08, p < 0.01). Using allometric equations, we found M, B, and the O2-pulse (VoZ/HR) at a heart rate of 140 beatslmin and at the anaerobic threshold, all scaled in direct Received July 8. 1983: accepted February 7. 1984. Reprint requests may be addressed to Dan M. Cooper, M.D. A-15 Annex, Halbor-UCLA Medical Center. Torrance, CA 90509.Senior Investigator of the American Heart Association, Greater Los Angeles Affiliate.proportion to body weight (i.e., to 1.0 power of body weight). We conclude that during growth, the output of the heart is closely tied to the size of the muscles so that delivery of oxygen during exercise is maintained at optimized levels from early in childhood. Abbreviations vo2, oxygen uptake Vozmax, maximum oxygen uptake AT, anaerobic threshold HR, heart rate SV, stroke volume (a -V)Oz, arteriovenous oxygen content differenceWe have recently demonstrated that certain aerobic parameters of exercise appear to be highly regulated as body weight changes during gro?h in children. The work efficiency and the response time for V O~ following the onset of exercise are independent of body size, whereas the Vo2max and the A T increase in direct proportion to body weight (6). Moreover, the Vo2 increases linearly with work rate in both adults and children (6,19) indicating that as more muscle units are activated, the flow of oxygen is optimized so that a unique work efficiency is maintained at virtually all levels of energy demand. In addition, other investigators have shown that the relationship between Vo2 and HR is linear during progressive exercise in children, and t...

show abstract

“…Foram realizados três minutos de aquecimento em velocidade de 5km.h -1 . Após essa fase, a velocidade da esteira foi aumentada em 1km.h -1 , a cada 60 segundos, até a fadiga voluntária ser alcançada (15) . O maior valor registrado no freqüencímetro no momento da fadiga foi considerado como a FC MAX .…”

Section: Determinação De Freqüência Cardíaca Máxima (Fc Max )unclassified

Treino de corrida não interfere no desempenho de força de membros superiores

Raddi

Gomes

Charro³

et al. 2008

Rev Bras Med Esporte

View full text Add to dashboard Cite

RESUMOObjetivo: O presente estudo avaliou o efeito do exercício de endurance (corrida) sobre o subseqüente desempenho de força de músculos dos membros superiores e do tronco. Metodologia: A amostra foi composta por 13 universitárias, saudáveis e fisicamente ativas. A primeira fase do experimento consistiu na realização de um teste de corrida, simulando uma sessão de treino, com duração de 45 minutos a 70% da FC MAX . Imediatamente após a corrida, foram aplicados testes de força (dinamometria -preensão palmar, teste de 1-RM e teste de repetições máximas a 70%-1RM no supino). A glicemia foi mensurada no início do experimento e imediatamente antes dos testes de força. Resultados: Não foi observada diferença significativa no desempenho dos testes de força após o treino de corrida (dinamometria, 1-RM e REPMAX -sem a prévia execução do treino de corrida -29,9 ± 3,8 kgf; 34,4 ± 3,1 kg; 1 o set: 12,5 ± 3,3 reps e 2 o set: 11,7 ± 2,7 reps vs. com a prévia execução do treino de corrida -29,2 ± 3,1 kgf; 33,9 ± 2,5 kg; 1 o set: 13,2 ± 2,1 reps e 2 o set: 12,2 ± 2,8 reps). Com relação à glicemia, não foi detectada alteração significativa durante o experimento. Conclusão: A execução do treino de corrida não afetou o subseqüente desempenho de força dos membros superiores e do tronco. Esse dado sugere que a interferência, freqüentemente, observada no exercício concorrente, é dependente do grupo muscular treinado. Possivelmente, o efeito adverso induzido pelo treino concorrente, realizado, exclusivamente, com membros inferiores, é decorrente da fadiga residual instalada nos músculos recrutados na atividade anterior. É importante ressaltar que a atividade de endurance não promoveu alteração na concentração plasmática de glicose. A manutenção da glicemia associada à ausência de interferência sobre o desempenho dos testes de força reforça, mais ainda, a hipótese de que o efeito adverso do treinamento concorrente é, provavelmente, causado por alterações periféricas músculo-específicas.Palavras-chave: treinamento concorrente, interferência, endurance, força. ABSTRACTAim: the present study evaluated the effect of endurance exercise (running) on the subsequent strength performance of muscles of upper limbs and trunk. Methodology: Thirteen healthy female, university students, physically active were selected to compose the sample. The first phase of the experiment the subjects were submitted to an endurance exercise bout (treadmill), simulating a training session, with duration of 45 minutes at 70% of the HR max . Immediately after the endurance exercise bout, the subjects performed strength tests (Dynamometry test -handgrip, 1RM test and maximal repetitions test at 70%-1RM in the bench press). Glycemia was measured in the beginning of the experiment and immediately before the strength tests. Results: No significant difference was observed in the strength tests performance after the endurance exercise bout (Dynamometry, 1-RM and REPMAX -with no previous endurance exercise -29.9 ± 3.8 kgf; 34.4 ± 3.1 kg; 1 st set 12.5 ± 3.3 reps and 2 nd ...

show abstract

Effect of ramp slope on determination of aerobic parameters from the ramp exercise test

Cited by 178 publications

References 0 publications

Use of exercise testing in the evaluation of interventional efficacy: an official ERS statement

Use of exercise testing in the evaluation of interventional efficacy: an official ERS statement

Growth-related Changes in Oxygen Uptake and Heart Rate during Progressive Exercise in Children

Treino de corrida não interfere no desempenho de força de membros superiores

Contact Info

Product

Resources

About