Key result
Basal heart rate variability and autonomic response during exercise strongly correlated (r>0.83) with Yo-Yo IR1 performance in soccer referees.
Observational (n=9)
Nocturnal HRV and autonomic response during exercise can serve as simple and valid monitoring tools for assessing fitness in soccer referees.
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May support HRV for referee fitness assessment; hypothesis-generating and requires larger prospective validation.
We tested the hypothesis that: basal cardiac autonomic modulation (i.e. heart rate variability, HRV) was associated with the parasympathetic withdrawal during, and overall Yo-Yo IR1 performance; and therefore HRV could be used as a simple tool for specific fitness assessment. Nine sub-elite soccer referees performed the Yo-Yo IR1 until exhaustion with simultaneous recording of heart rate with the autonomic response during exercise calculated as the area under the curve (AUC). In the same week but with at least 48 hrs between days, a night-time HR recording was obtained from participants for determination of basal HRV. Correlation analysis demonstrated strong (r>0.83) relationships among Yo-Yo IR1 performance, AUC and basal HRV. These results indicate that both nocturnal HRV and AUC can be utilised as simple and valid monitoring tools of soccer referees' fitness.
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Boullosa et al. (2012) conducted an observational in Fitness assessment (n=9). Basal heart rate variability (HRV) was evaluated on Correlation among Yo-Yo IR1 performance, AUC and basal HRV (r>0.83). Basal heart rate variability and autonomic response during exercise strongly correlated (r>0.83) with Yo-Yo IR1 performance in soccer referees.
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