What the study found
The HRV-guided group showed less disruption in some autonomic measures and improved its later roller-ski result. Several findings differed by measurement and time point.
Participants and protocol
Twenty-four elite Nordic skiers entered three groups during a fifteen-day camp: HRV-guided training with simulated altitude, predefined training with simulated altitude, or predefined training at normal oxygen levels.
What this cannot establish
Small groups and a combined altitude-and-training intervention limit attribution. Within-group improvements do not prove that any consumer HRV-guided plan is superior.
Publication details
- Record
- PubMed 29247273
- Publication types
- Randomized Controlled Trial
- Indexed subjects
- Oxygen · Altitude · Circadian Rhythm · Heart Rate · Posture
- Source record checked
- 2026-10-18
Publication type and subject indexing describe the record; they are not a quality grade or proof of a benefit. An abstract does not replace a review of the full methods and results.
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