Effects of a 75-km mountain ultra-marathon on heart rate variability in amateur runners

Calleja-Romero, A. ; López-Laval, I. (Universidad de Zaragoza) ; Sitko, S. (Universidad de Zaragoza) ; Hernando, D. ; Vicente-Rodríguez, G. (Universidad de Zaragoza) ; Bailón, R. (Universidad de Zaragoza) ; Garatachea, N. (Universidad de Zaragoza)

Resumen: BACKGROUND: This study examined the effects of a mountain ultra-marathon (MUM) on the activity of the autonomous nervous system through heart rate variability (HRV) monitoring and determined whether this variable related to final performance.
METHODS: Heart rate and HRV were measured in eight male amateur runners (aged 37-60 years). Measurements were recorded before and after the event, in resting conditions, as well as continuously throughout the whole MUM. In addition, percentage (%) of heart rate reserve (HRres) and partial and total times during the race were analyzed.
RESULTS: Average heart rate (HRavg) measured at rest was increased after the event (+37%). Standard deviation of successive differences (SDSD) and the square root of the mean squared differences of successive NN intervals (RMSSD) were reduced after the MUM (-56% and -59%, respectively). There was a positive relationship between the frequency-domain index normalized low frequency power (PLFn) measured at rest before the event and race time (0.79) while there was a negative relationship between race time and the difference in HRavg before and after the event. In the last half of the event, there was a high correlation (Spearman coefficient of correlation >0.9) between race time and the standard deviation of the NN intervals (SDNN) registered during the race.
CONCLUSIONS: Autonomous cardiac regulation can be related to the performance in a mountain ultra-marathon. HRV monitoring could represent a practical tool for the evaluation of the relationship between the autonomous nervous system activity and performance in a mountain ultra-marathon.

Idioma: Inglés

DOI: 10.23736/S0022-4707.20.10860-0

Año: 2020

Publicado en: The Journal of sports medicine and physical fitness 60, 10 (2020), 1401-1407
ISSN: 0022-4707

Factor impacto JCR: 1.637 (2020)

Categ. JCR: SPORT SCIENCES rank: 71 / 88 = 0.807 (2020) - Q4 - T3

Factor impacto SCIMAGO: 0.537 - Orthopedics and Sports Medicine (Q2) - Sports Science (Q2) - Physical Therapy, Sports Therapy and Rehabilitation (Q2)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Educación Física y Depor. (Dpto. Fisiatría y Enfermería)
Área (Departamento): Área Teoría Señal y Comunicac. (Dpto. Ingeniería Electrón.Com.)