Hormonal
Heart rate variability (HRV) indices, particularly parasympathetic markers (HF, pNN50, rMSSD), serve as effective biomarkers for monitoring training load and preventing overtraining states in athletes.
Use Heart Rate Variability (HRV) monitoring to track your training progress. It is more sensitive than resting heart rate for detecting fatigue and overtraining. High parasympathetic HRV during recovery indicates good adaptation, while a shift to sympathetic dominance during heavy training blocks signals the need for caution or recovery.
Therefore, heart rate variability analysis appears to be an appropriate tool to monitor the effects of physical training loads on performance and fitness, and could eventually be used to prevent overtraining states.
Why this rating
Strong longitudinal correlation with performance metrics in a controlled setting.
Source
Autonomic adaptations to intensive and overload training periods: a laboratory study
Vincent Pichot et al. · Medicine & Science in Sports & Exercise · 2002
DOI 10.1097/00005768-200210000-00019
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