May 1, 1978Journal of Gerontology
Training and Oxygen Conductance in the Elderly. II. the Cardiovascular System
Why the study?
Does an 11-week endurance training programme alter cardiac output and heart rate in elderly individuals?
Population
15 elderly individuals (8 men, 7 women) aged 60-76 years
Comparison
11-week endurance training programme vs Baseline (before participation)
Design
Cohort
Follow-up
11 weeks
Authors
Discussion
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Implication
Supports submaximal hemodynamic adaptations with endurance training in older adults; hypothesis-generating and requires randomized confirmation before practice change.
Key Points
- To assess cardiovascular adaptations and oxygen transport dynamics in older adults undergoing an endurance training regimen.
- Assessed 15 older adults (8 men and 7 women, aged 60–76 years) before and immediately after an 11-week endurance training programme.
- Measured cardiac output, heart rate, stroke volume, and arterio-venous oxygen difference using indirect CO2 rebreathing methods during graded exercise up to maximum oxygen intake.
- Prior to training, older subjects demonstrated lower heart rates at equivalent relative workloads than younger cohorts, meeting metabolic demands via greater arterio-venous oxygen difference and blood redistribution.
- Following 11 weeks of training, participants showed significant reductions in heart rate and cardiac output at a given sub-maximum work load.
- Stroke volume and arterio-venous oxygen difference during sub-maximum exercise remained unchanged after the endurance intervention.
Structured PICO
Does an 11-week endurance training programme alter cardiac output and heart rate in elderly individuals?
P
Population
15 elderly individuals (8 men, 7 women) aged 60-76 years
I
Intervention
11-week endurance training programme
C
Comparator
Baseline (before participation)
O
Outcome
Cardiac output, heart rate, stroke volume, and arterio-venous oxygen difference at sub-maximum work loadsurrogate
An 11-week endurance training program in elderly individuals decreases heart rate and cardiac output at sub-maximal workloads without changing stroke volume or arterio-venous oxygen difference.
Cite This Study
Niinimaa et al. (1978) studied this question.