Key result
20-week aerobic training linked to significant shifts in the %HRR-%VO2R relationship.
Why the study?
It was unknown whether considering individual characteristics makes the relationship between percentages of heart rate and oxygen uptake reserve 1:1 or more accurate during incremental exercise.
Does 20 weeks of aerobic training alter the relationship between heart rate reserve and oxygen uptake reserve in healthy sedentary individuals?
Population
450 healthy and sedentary participants (17–66 years) of the HERITAGE Family Study
Comparison
Subgroups based on individual characteristics and before vs after 20 weeks of aerobic training
Follow-up
20 weeks
Authors
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May affect exercise intensity prescriptions post-training; hypothesis-generating for individualized %HRR-%VO2R equations.
Observational (n=450)
Does 20 weeks of aerobic training alter the relationship between heart rate reserve and oxygen uptake reserve in healthy sedentary individuals?
p-value: p=< 0.001
The %HRR-%VO2R relationship differs from the 1:1 identity line and exhibits high interindividual variability that increases with aerobic training, suggesting a single equation is not suitable for all individuals.
Marini et al. (2022) conducted an observational in Healthy and sedentary (n=450). Aerobic training vs. Baseline was evaluated on Individual linear regression intercepts and slopes between %HRR and %VO2R (p=< 0.001). Aerobic training for 20 weeks significantly altered the %HRR-%VO2R relationship, changing individual linear regression intercepts from 8.9 to 13.1 and slopes from 0.971 to 0.891 (p<0.001).
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