Key result
A 2-week training camp resulted in significant changes in standard heart rate variability parameters (meanNN and rmssd) and scaling characteristics in athletes.
Why the study?
Does short-term overtraining during a training camp alter heart rate variability in athletes?
Observational (n=10)
Does short-term overtraining during a training camp alter heart rate variability in athletes?
Heart rate variability parameters change significantly during short-term overtraining and may be useful for monitoring the training state in athletes.
HRV changes during training camps may indicate overtraining load; leaves open utility for athlete monitoring pending prospective validation.
Heart rate variability (HRV) reflects regulatory processes of the cardiovascular system and reveals fractal characteristics. In this paper we investigated standard HRV parameters and scaling characteristics in ten athletes before, during, and after a 2-week training camp to assess the effects of short-term overtraining on cardiovascular control. High-resolution ECGs were recorded over 30 min under resting conditions 1 week before the training camp, after 1 week of training in the camp, and after 3-4 days of recovery. Standard HRV analysis was performed according to Task Force recommendations. Scaling characteristics were assessed, applying detrended fluctuation analysis (DFA). Standard HRV analysis showed significant changes in meanNN and rmssd during the training camp. DFA revealed three distinct regions of scale-invariance and significant alterations during the training camp. In conclusion, HRV might be used to monitor the training state in athletes.
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Baumert et al. (2006) conducted an observational in Athletes (n=10). 2-week training camp vs. Baseline (1 week before) and recovery (3-4 days after) was evaluated on Standard HRV parameters (meanNN and rmssd) and scaling characteristics. A 2-week training camp resulted in significant changes in standard heart rate variability parameters (meanNN and rmssd) and scaling characteristics in athletes.
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