TY - JOUR
T1 - Comparison of hemodynamic and left ventricular responses to increased after-load in healthy males and females
AU - Sagio, M.
AU - Metrany, R.
AU - Fisher, N.
AU - Fisman, E. Z.
AU - Kellermann, J. J.
PY - 1991
Y1 - 1991
N2 - Hemodynamic and left ventricular responses were studied echocardiographically in 20 males (31.5 ± 4.5 yrs) and 20 females (30.4 ± 4.3 yrs) at rest and during 3 min of isometric deadlift exercise at 30% of maximum voluntary contraction. Maximal tension exerted was significantly (P < .001) lower in the female group (87.4 ± 8.1 kg) compared with the male group (127.3 ± 15 kg). Significant (P < .001) increases in heart rate and contractility index were noted in both groups during exercise compared to the resting values. Mean arterial blood pressures were significantly (P < .05) higher in the males at rest and during exercise. Ejection fraction and fractional shortening, both at rest and during exercise, differed significantly (P < .05) between the two groups. It was raised by exercise only in the males (from 62 ± 5% to 65 ± 5% and 32 ± 4% to 35 ± 4%, respectively) but remained unchanged in the females. No significant changes in end diastolic dimension and stroke volume were observed in either group during exercise. End systolic dimension was significantly (P < .001) lower during exercise in females and males from (3.25 ± .23 to 3.1 ± .26 and 3.12 ± .33 to 3.00 ± .32 cm, respectively). These data indicate that hemodynamic and left ventricular function in normal male and female subjects were augmented during submaximal isometric exercise. However, females do so with lower after-load than males.
AB - Hemodynamic and left ventricular responses were studied echocardiographically in 20 males (31.5 ± 4.5 yrs) and 20 females (30.4 ± 4.3 yrs) at rest and during 3 min of isometric deadlift exercise at 30% of maximum voluntary contraction. Maximal tension exerted was significantly (P < .001) lower in the female group (87.4 ± 8.1 kg) compared with the male group (127.3 ± 15 kg). Significant (P < .001) increases in heart rate and contractility index were noted in both groups during exercise compared to the resting values. Mean arterial blood pressures were significantly (P < .05) higher in the males at rest and during exercise. Ejection fraction and fractional shortening, both at rest and during exercise, differed significantly (P < .05) between the two groups. It was raised by exercise only in the males (from 62 ± 5% to 65 ± 5% and 32 ± 4% to 35 ± 4%, respectively) but remained unchanged in the females. No significant changes in end diastolic dimension and stroke volume were observed in either group during exercise. End systolic dimension was significantly (P < .001) lower during exercise in females and males from (3.25 ± .23 to 3.1 ± .26 and 3.12 ± .33 to 3.00 ± .32 cm, respectively). These data indicate that hemodynamic and left ventricular function in normal male and female subjects were augmented during submaximal isometric exercise. However, females do so with lower after-load than males.
UR - http://www.scopus.com/inward/record.url?scp=0026026082&partnerID=8YFLogxK
U2 - 10.1055/s-2007-1024653
DO - 10.1055/s-2007-1024653
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AN - SCOPUS:0026026082
SN - 0172-4622
VL - 12
SP - 41
EP - 45
JO - International Journal of Sports Medicine
JF - International Journal of Sports Medicine
IS - 1
ER -