Generalized equations for predicting functional capacity from treadmill performance

Foster, Carl; Jackson, Andrew S.; Pollock, Michael L.; Taylor, M.L.; Hare, John; Sennett, Sheila M.; Rod, Joe L.; Sarwar, Mohammed; Schmidt, Donald H.

doi:10.1016/0002-8703(84)90282-5

Cited by 173 publications

(81 citation statements)

References 17 publications

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“…They were randomly assigned to either an exercise or control group (exercise group: n ϭ 10, 5 men, 5 women; control group: n ϭ 10, 6 men, 4 women). Peak O 2 uptake (V O2 peak) estimates were obtained for all of the participants using the time to termination of the stress test as the criterion (9). All of the women were postmenopausal, and none was on hormone replacement therapy during testing or intervention.…”

Section: Methodsmentioning

confidence: 99%

Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women

Hernandez¹,

Franke²

2005

Journal of Applied Physiology

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. Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women. J Appl Physiol 99: 1070 -1077, 2005. First published April 14, 2005 doi:10.1152/japplphysiol.01169.2004.-Aging and chronic exercise training influence leg venous compliance. Venous compliance affects responses to an orthostatic stress. The extent to which exercise training in a previously sedentary older population will affect venous compliance and tolerance to the simulated orthostatic stress of maximal lower body negative pressure (LBNP) is unknown. The purpose of this investigation is to determine the influence of a 6-mo endurance-training program on calf venous compliance and responses and tolerance to maximal LBNP in older men and women. Twenty participants (exercise group: n ϭ 10, 5 men, 5 women; control group: n ϭ 10, 6 men, 4 women; all Ͼ60 yr) underwent graded LBNP to presyncope or 4 min at Ϫ100 mmHg before and after a 6-mo endurance-training program. Utilizing venous occlusion plethysmography, calf venous compliance was determined in both groups using the first derivative of the pressure-volume relation during cuff pressure reduction before training, at 3 mo, and at the end of the training program. The exercise group improved their fitness with the 6-mo endurance-training program, whereas the control group did not change (14 Ϯ 3 vs. Ͻ1 Ϯ 2%; P Ͻ 0.05). LBNP tolerance did not differ between groups or across trials (P ϭ 0.47). Venous compliance was not different between groups or trials, either initially or after 3 mo of endurance training, but tended to be greater in the exercise group after 6 mo of training (P ϭ 0.08). These data suggest that a 6-mo endurance-training program may improve venous compliance without affecting tolerance to maximal LBNP in older participants. orthostatic tolerance; peripheral circulation; baroreceptor sensitivity DESPITE EXTENSIVE investigation, the effects of either cardiovascular fitness or age on orthostatic tolerance remain uncertain. In younger people, some cross-sectional investigations have shown that endurance-trained participants have lower tolerance to head-up tilt or lower body negative pressure (LBNP) (6, 27), whereas others have found no fitness-related differences in tolerance (10, 16). Longitudinal investigations have shown that exercise training has improved (5, 13), had no effect on orthostatic tolerance (4, 33), or diminished tolerance to head-up tilt (26) and LBNP (28,36).Much less attention has been given to the effects of exercise training on orthostatic tolerance in older adults. Aging has been associated with a higher incidence of orthostatic hypotension (21, 30), which might increase the risk of falls in this population. A greater predisposition to orthostatic hypotension as a result of endurance training in an older population would be undesirable. On the other hand, if endurance training improved blood pressure regulation, then it would further support the inclusion of this type of exercise training in current recomm...

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Section: Methodsmentioning

confidence: 99%

Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women

Hernandez¹,

Franke²

2005

Journal of Applied Physiology

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“…[21] At the end of exercise, the total duration of exercise was recorded in minutes and seconds, and on the basis of exercise time (T), VO 2 max was calculated by following formula in males and females' separately. [25,26] …”

Section: Anthropometric Measurementsmentioning

confidence: 99%

Does visceral fat affect aerobic fitness in Indian adolescents of 18-19 years' age group?

Parikh¹,

Shah²,

Singh³

2017

Natl J Physiol Pharm Pharmacol

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Background: Cardiovascular endurance tests are considered as one of the best methods for assessment of the individual's health. Reduced aerobic fitness is seen in overweight and obese. Aerobic fitness is also reduced in centrally obese individual. However, very less scientific documentation available on the effect of visceral fat on aerobic fitness in Indian adolescents. Aims and Objectives: The present study was undertaken to check the effect of visceral fat on aerobic fitness in Indian adolescents of 18-19 years of age group. Materials and Methods: Our study was conducted on 120 healthy, non-athletes' Indian adolescents (60 males and 60 females) of 18-19 years of age group after their voluntary written consent. Visceral fat was recorded by bioelectrical impedance technique using Omron HBF-302 body fat analyzer. All volunteers were categorized into two groups on the basis of their visceral fat. Volunteers with visceral fat 0-9 were categorized as a normal visceral fat group, and volunteers with visceral fat ≥10 were categorized as a high visceral fat group. Estimation of VO 2 max was done by treadmill exercise test following the standard Bruce protocol. Results: In high visceral fat Indian adolescents, VO 2 max by treadmill exercise test was significantly less as compared to the normal visceral fat group. In normal visceral fat male adolescents (n = 30), VO 2 max was 49.29 ± 7.81 ml/kg/min, and in high visceral fat male adolescents (n = 30), VO 2 max was 33.94 ± 6.75 ml/kg/min. (P < 0.001). Similarly, in normal visceral fat female Indian adolescents, VO 2 max was 47.85 ± 7.10 ml/kg/min, whereas in high visceral fat female adolescents (n = 30), VO 2 max was 29.68 ± 7.79 ml/kg/min. (P < 0.001). Conclusion: VO 2 max was significantly less in high visceral fat adolescents compared to normal visceral fat adolescents. Increased visceral fat is associated with reduced aerobic fitness in Indian adolescents.

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“…As indicações de suspensão do teste foram as recomendadas pelo Colégio Americano de Medicina do Esporte 18 . O tempo necessário para alcançar a freqüência cardíaca máxima teórica (220-idade) foi utilizado para as estimativas do consumo máximo de oxigênio 19 . Para aqueles avaliados que não foram capazes de alcançar sua freqüên-cia cardíaca máxima teórica foi empregada, como referencial, a duração do teste de esforço.…”

Section: Métodosunclassified

Distribuição de gordura corporal, pressão arterial e níveis de lipídios-lipoproteínas plasmáticas

Guedes¹,

Guedes²

1998

Arq. Bras. Cardiol.

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Purpose -To study associations between FAT distribution and blood pressure levels and concentrations of lipids and lipoproteins, irrespective of body fat content and physical activity.Methods -A sample of 62 subjects of both genders aging 20-45 years-old Estudos recentes sugerem que a variação da distribuição anatômica da gordura corporal é importante indicador morfológico relacionado com complicações endócrinas e metabólicas predisponentes ao aparecimento e desenvolvimento de doenças cardiovasculares 1-3 . Indivíduos com

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Generalized equations for predicting functional capacity from treadmill performance

Cited by 173 publications

References 17 publications

Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women

Effects of a 6-mo endurance-training program on venous compliance and maximal lower body negative pressure in older men and women

Does visceral fat affect aerobic fitness in Indian adolescents of 18-19 years' age group?

Distribuição de gordura corporal, pressão arterial e níveis de lipídios-lipoproteínas plasmáticas

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