Key result
12 weeks of endurance training increased maximal cardiac output from 18.1 to 20.2 l/min (P<0.01) and attenuated the decline in stroke volume at high exercise intensities in young healthy subjects.
Why the study?
Does endurance training prevent the decline in stroke volume during maximal exercise in young healthy subjects?
Population
12 young healthy subjects (6 men, 6 women), age 25 +/- 1 yr old
Comparison
12 weeks of endurance training vs Before training (baseline)
Design
Cohort
Follow-up
12 weeks
Authors
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Suggests physiological cardiac adaptation to exercise in healthy youth; leaves open whether similar stroke volume preservation occurs in.
Does endurance training prevent the decline in stroke volume during maximal exercise in young healthy subjects?
Effect estimate: 12% increase
Absolute Event Rate: 20.2% vs 18.1%
p-value: p=<0.01
Endurance training in young healthy subjects attenuates the decline in stroke volume at high exercise intensities, contributing to increased maximal cardiac output.
Spina et al. (1992) studied Healthy (n=12). Endurance training vs. Before training (baseline) was evaluated on Maximal cardiac output (Qmax) (12% increase, p=<0.01). 12 weeks of endurance training increased maximal cardiac output from 18.1 to 20.2 l/min (P<0.01) and attenuated the decline in stroke volume at high exercise intensities in young healthy subjects.
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