Why the study?
Does heavy training alter autonomic nervous system activity assessed by heart rate variability in middle-distance runners?
Population
7 middle-distance runners, aged 24.6 +/- 4.8 yr, and a sedentary control group.
Comparison
Usual training cycle composed of 3 weeks of… vs Sedentary control group.
Design
Cohort
Follow-up
4 weeks
Authors
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Overnight HRV may track training fatigue in runners; hypothesis-generating, needs prospective trials before guiding practice.
Does heavy training alter autonomic nervous system activity assessed by heart rate variability in middle-distance runners?
Overnight heart rate variability is a useful tool to evaluate cumulated physical fatigue and autonomic balance shifts in athletes.
Pichot et al. (2000) studied this question.
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