Relationships Between Repeated Sprint Ability, Mechanical Parameters, and Blood Metabolites in Professional Soccer Players

Morcillo, Jose A. ^[1] ; Jiménez-Reyes, Pedro ^[4] ; Cuadrado-Peñafiel, Victor ^[2] ; Lozano, Emilio ^[1] ; Ortega Becerra, Manuel ^[3] ; Párraga, Juan ^[1]
1. [1] Universidad de Jaén
  
  Universidad de Jaén
  
  Jaén, España
2. [2] Universidad Complutense de Madrid
  
  Universidad Complutense de Madrid
  
  Madrid, España
3. [3] Universidad de Sevilla
  
  Universidad de Sevilla
  
  Sevilla, España
4. [4] Universidad Católica de Murcia
Mostrar afiliaciones +
Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 29, Nº. 6, 2015, págs. 1673-1682
Idioma: inglés
DOI: 10.1519/jsc.0000000000000782
Texto completo no disponible (Saber más ...)

Resumen
- This study analyzed the acute metabolic and mechanical responses to a specific repeated sprint ability (RSA) test. Eighteen male professional soccer players from a team of the First Division of Spanish National League participated. A 12 × 30-m RSA test with 30-second recovery together with countermovement jump test (CMJ) pre a post RSA test was performed. Mechanical responses (i.e., height performance in CMJ and speed loss) and metabolic responses (i.e., blood lactate and ammonia concentrations) were measured before and after exercise. A related sample t-test was used to analyze CMJ height pre-post changes as well as to compare pre- and post-exercise lactate and ammonia levels. Countermovement jump height loss pre-post session (8%) was significant, and fatigue, measured as CMJ height loss, was strongly correlated to lactate (r = 0.97; p < 0.001) and ammonia (r = 0.92; p < 0.001) for all players. The relationships between the variables studied were determined by calculating the Pearson correlation coefficients. The metabolic stress developed during the effort can be estimated by controlling CMJ because of the high correlation between CMJ and blood lactate and ammonia concentrations. The high correlations found between mechanical (speed and CMJ height losses) and metabolic (lactate and ammonia) measures of fatigue highlight the utility and validity of using CMJ to monitor training load and quantify objectively neuromuscular fatigue during RSA.