Key result
High-intensity endurance training increased VO2max (P=0.005) and nocturnal high-frequency power (P=0.003) in sedentary subjects, with changes in HFP correlating with VO2max improvements (r=0.90).
Why the study?
Does high-intensity endurance training improve VO2max and nocturnal heart rate variability in sedentary participants?
Population
15 sedentary participants
Comparison
Three high-intensity endurance training sessions… vs No change in training for 4 weeks
Design
Cohort
Follow-up
8 weeks (two 4-week training periods)
Authors
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High-intensity endurance training was associated with VO2max and nocturnal HRV gains in sedentary adults; hypothesis-generating for HRV as training-response monitor.
Does high-intensity endurance training improve VO2max and nocturnal heart rate variability in sedentary participants?
p-value: p=0.005
High-intensity endurance training increases nocturnal high-frequency power, which correlates with improved VO2max, suggesting its utility in monitoring individual responses to endurance training.
Nummela et al. (2016) studied Sedentary (n=15). High-intensity endurance training vs. No change in training was evaluated on VO2max and nocturnal high-frequency power (HFP) (p=0.005). High-intensity endurance training increased VO2max (P=0.005) and nocturnal high-frequency power (P=0.003) in sedentary subjects, with changes in HFP correlating with VO2max improvements (r=0.90).