Influences of age and sex on cardiac output during submaximal exercise.

Katsuura, Tetsuo

doi:10.2114/ahs1983.5.39

Cited by 15 publications

(15 citation statements)

References 52 publications

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“…The subjects were given the Wingate Anaerobic Test which consists of 3 0 s of supramaximal cycling against a resistance determined relative to the subject's body weight. The test was performed with a load of 80 grkg-' body weight according to the data published earlier [9].…”

Section: Exercise Protocolmentioning

confidence: 99%

Direct vs. Indirect Blood Pressure Measurement at Peak Anaerobic Exercise

Sagiv¹,

Ben‐Sira²,

Goldhammer³

1999

Int J Sports Med

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The present study compared the direct intra-arterial method with the indirect conventional sphygmomanometer during all-out anaerobic exercise, in young healthy subjects. Systolic and diastolic blood pressures were measured by intraarterial means and by auscultation. Fourteen young healthy males (23+/-2 yrs) were measured at rest and during all-out anaerobic exercise. Comparisons were made with simultaneously determined intra-arterial catheter and auscultation measurements. The data suggest that indirect systolic pressure is highly correlated with the direct method at rest (r = 0.684), with mean of 107+/-7 and 101+/-6 mmHg, respectively, and during all-out anaerobic exercise (r = 0.87), with mean of 197+/-11 and 191+/-9 mmHg, respectively. Indirect diastolic blood pressure correlates well with intra-arterial at rest (r = 0.62), with mean of 84+/-11 and 77+/-9 mmHg, respectively. However, during all-out anaerobic exercise, the correlation coefficient between the direct and the indirect methods was low (r = 0.36), with mean of 101+/-12 and 103+/-9 mmHg, respectively. These results suggest that when utilizing an all-out anaerobic exercise, the indirect method is not valid for assessment of diastolic pressure. In addition, although the anaerobic test is a dynamic type of exercise, its blood pressure responses for both direct and indirect methods were similar to those seen during isometric exercise.

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Section: Exercise Protocolmentioning

confidence: 99%

Direct vs. Indirect Blood Pressure Measurement at Peak Anaerobic Exercise

Sagiv¹,

Ben‐Sira²,

Goldhammer³

1999

Int J Sports Med

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“…Both boys (4,5) and girls (5,6) have been reported to have a lower Q Ç and a higher a-vO 2 diff : than adults at a given submaximal V Ç O 2 or exercise intensity. Although boys' higher SV and lower HR at a given submaximal V Ç O 2 or exercise intensity than those of girls are consistent ndings (5,9), sex differences have not always been demonstrated to be statistically signi cant (4). Even when comparing younger and older children, SV is lower in the younger children (3).…”

mentioning

confidence: 99%

“…The available data indicate that the child's cardiovascular response to exercise is not fundamentally different from that of an adult but the relative contributions of Q, SV, HR and a-vO 2 diff : to V Ç O 2 appear to vary with age (2)(3)(4). Q Ç at a given submaximal exercise intensity has been reported to be higher (7), lower (5) or the same (8) in girls compared to boys. This is attributed to a lower SV, which is only partly compensated for by a higher HR.…”

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confidence: 99%

Cardiovascular responses to submaximal treadmill running in 11 to 13 year olds

Armstrong¹,

Welsman²

2002

Acta Paediatrica

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“…According to the Fick equation, gender differences must be explained by variance in heart rate (HR), stroke volume (SV), and arteriovenous oxygen difference (DAVO 2 ). Cardiac output (Q ) at a given submaximal work rate has been reported to be higher, 11 lower, 12 or the same 6,13 in boys compared to girls. Most literature studies reported that SV was higher and HR was lower in boys than in girls at a given absolute submaximal rate.…”

mentioning

confidence: 99%