The Effect of Isometric Exercise on the Left Ventricular Volume in Normal Man
Why the study?
Does isometric handgrip exercise alter left ventricular volume and performance in normal subjects?
Population
15 normal subjects
Comparison
Isometric handgrip exercise for 3 minutes at 50%… vs Rest (baseline values)
Design
Other
Follow-up
3 minutes
Authors
Discussion
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Member takes
Implication
Supports contractility augmentation during isometric exercise in normals; leaves open relevance to patients or clinical testing.
Structured PICO
Does isometric handgrip exercise alter left ventricular volume and performance in normal subjects?
P
Population
15 normal subjects
I
Intervention
Isometric handgrip exercise (IHG) for 3 minutes at 50% of maximum contraction
C
Comparator
Rest (baseline values)
O
Outcome
Left ventricular size and performance (including cardiac index, mean blood pressure, heart rate, end-diastolic volume index, stroke index, and systemic vascular resistance)surrogate
Isometric handgrip exercise increases cardiac index through tachycardia without utilizing diastolic volume reserves, suggesting augmented LV myocardial contractility in normal subjects.
Cite This Study
Stefadouros et al. (1974) studied this question.