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D Ben-Sira

Publications and source records attributed to D Ben-Sira.

22 records · Page 2Linked to original sources
PubMed1988

Cardiovascular response during upright isometric dead lift in young, older, and elderly healthy men.

Isometric exercises raise the mean arterial blood pressure and impose serious stress on left ventricular function. It may be more dangerous for older than for younger people. The effect of aging on blood pressure response was studied in 75 subjects, 25 normal young men aged 25 +/- 4 years, 25 older men aged 51 +/- 3.2 years, and 25 elderly men aged 68 +/- 4 years, during upright isometric dead lift at 30% maximal voluntary effort for 3 min. The heart rate, systolic blood pressure, and diastolic blood pressure were measured during the 3rd min of dead lift contraction. Tension exerted was significantly lower in the older group (33 +/- 4 kg) and lowest in the elderly group (26.9 +/- 6 kg) compared with the young group (43 +/- 8 kg). All groups showed similar and significant increases in heart rate, systolic and diastolic blood pressure during dead lift (p less than 0.01). These data indicate a similar pattern of blood pressure response to acute pressure overload in young, older, and elderly normal men.

Adult↗
PubMed1988

Left ventricular and hemodynamic responses during upright isometric exercise in normal young and elderly men.

Cardiovascular responses were studied echocardiographically in 10 young (23 +/- 3 years) and 10 elderly (67 +/- 4 years) men, during upright isometric handgrip and deadlift. During handgrip and deadlift both groups showed significant increases in systolic and diastolic blood pressure. Those responses were significantly greater in both groups during deadlift. Heart rate was significantly higher in both groups during deadlift than resting and handgrip values. Oxygen uptake increased progressively and significantly across conditions, and was significantly higher for the younger subjects. Ejection fraction remained unchanged during handgrip in both groups. During deadlift it remained unchanged in the elderly while it increased significantly in the younger. Both groups increased significantly heart volumes from rest to handgrip. During deadlift end systolic volume was significantly lower from resting and handgrip values only in the young group. These data indicate a similar cardiovascular response to acute pressure overload in both groups.

Adult↗