Why the study?
Does Poincaré plot analysis of heart rate variability differentiate athletes with overtraining syndrome from healthy trained and sedentary subjects?
Population
23 subjects: 7 athletes diagnosed with overtraining syndrome, 8 healthy sedentary, and 8 trained subjects.
Comparison
Heart rate variability assessment using… vs Healthy sedentary (C) and trained (T) subjects.
Design
Cross-sectional
Key result
Overtraining syndrome in athletes was associated with a marked predominance of sympathetic activity (supine LF/HF 3.96 vs 0.47 in controls) and distinct, narrower Poincaré plot shapes.
Authors
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May support Poincaré plots for detecting overtraining-related sympathetic shift; hypothesis-generating and should not yet change practice.
Cross-Sectional (n=23)
Does Poincaré plot analysis of heart rate variability differentiate athletes with overtraining syndrome from healthy trained and sedentary subjects?
p-value: p=<0.05
Poincaré plot analysis of HRV reveals a marked predominance of sympathetic activity in overtrained athletes, suggesting its utility as an easy-to-compute tool for detecting fatigue and preventing overtraining syndrome.
Mourot et al. (2004) conducted a cross-sectional in Overtraining syndrome (n=23). Overtraining syndrome vs. Healthy sedentary and trained subjects was evaluated on Heart rate variability (HRV) profile including time-domain, frequency-domain, and Poincaré plot analysis (p=<0.05). Overtraining syndrome in athletes was associated with a marked predominance of sympathetic activity (supine LF/HF 3.96 vs 0.47 in controls) and distinct, narrower Poincaré plot shapes.