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Post-exercise heart rate variability recovery after 800-m endurance run load among Cameroonian adolescent's males. | LitMetric

AI Article Synopsis

Article Abstract

The 800-m (m) run is part of Physical Education classes in Cameroon, after which arrhythmias may occur during recovery. Hence, this study aimed at determining relationship between 800-m run loads on cardiac autonomic recovery among school adolescents. Forty-two male adolescents (aged [17 ​± ​1] years) performed 800-m. Post-exercise heart rate variability (HRV) was recorded during 5-min (min) (HRV and 15-min (HRV) in time: Standard deviation of normal to normal (SDNN); Root mean square of successive differences (RMSSD) and frequency domain (LH: Low frequency, HF: High frequency, TP: Total power). Rating of Perceived Exertion (RPE) and blood lactate concentration (BLa) were measured after exercise. In HRV, RPE was associated with SDNN ( ​= ​-0.44 ​< ​0.01) and RMSSD ( ​= ​-0.38 ​< ​0.05). BLa was correlated with SDNN ( ​= ​-0.38 ​< ​0.05) and RMSSD ( ​= ​-0.56 ​< ​0.001) in the time-domain, LF ( ​= ​-0.64 ​< ​0.001), HF ( ​= ​-0.58 ​< ​0.001) and TP ( ​= ​-0.61 ​< ​0.001) in frequency-domain. Moreover, RPE was correlated with LF ( ​= ​-0.44 ​< ​0.01), TP ( ​= ​-0.49 ​< ​0.01) while exercise duration with HF ( ​= ​-0.38 ​< ​0.05). In HRV, BLa was correlated with RMSSD ( ​= ​-0.53 ​< ​0.001 and SDNN ( ​= ​-0.68 ​< ​0.001). RPE was negatively correlated SDNN ( ​= ​-0.53 ​< ​0.01) and RMSSD ( ​= ​-0.44 ​< ​0.01). BLa was associated with HF ( ​= ​-0.55 ​< ​0.001), TP ( ​= ​-0.50 ​< ​0.01) and RPE with LF ( ​= ​-0.51 ​< ​0.01), HF ( ​= ​-0.50 ​< ​0.01), TP ( ​= ​-0.49 ​< ​0.01). In addition, exercise duration was negatively linked to HF ( ​= ​-0.36 ​< ​0.05). This study outlined that in untrained adolescents an increase of 800-m loads is associated with a slow vagal indexes of HRV during the recovery.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10831379PMC
http://dx.doi.org/10.1016/j.smhs.2023.09.008DOI Listing

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