Comparison of different ways of expressing creatine kinase concentration of soccer players during a competitive season

Abstract

Abstract--The aim of this study was to analyze the responses of creatine kinase [CK] expressed in different forms to the training load of professional soccer players during a competitive season. Twelve players (age, 24 ± 4 years) participated in the study. [CK] was analyzed before the pre-season (Pre), after the pre-season (Post), and in the competitive mesocycles (M1, M2, and M3). Results showed [CK] in the Pre, Post, M1, M2, and M3 phases in absolute values (181.3 ± 58.7, 416.4 ± 155.7, 526.4 ± 268.0, 403.8 ± 137.0, and 442.5 ± 212.3 U/L, respectively), relative values (16.3 ± 4.6, 39.5 ± 19.1, 47.8 ± 20.1, 37.5 ± 14.2, 40.1 ± 17.4 %CK máx , respectively), and values relative to the variation delta (19.9 ± 3.6, 48.1 ± 26.5, 57.0 ± 23.2, 45.1 ± 17.7, and 48.3 ± 22.0 %ΔCK máx , respectively).[CK] was lower only during the Pre phase compared to the other phases (p < 0.05).[CK] was expressed as %CK máx or %ΔCK máx may be more specific to monitor training. In addition, the individualization of this biomarker optimizes the athletes' performance as muscle injuries can be prevented.

Muscle Damage–Based Recovery Strategies Can Be Supported by Predictive Capacity of Specific Global Positioning System Accelerometry Parameters Immediately a Post-Soccer Match-Load

“…Despite all the findings presented, it should be noted that only the avgSP parameter had a practical application (i.e., r > 0.7) to predict change in CK concentration at any time up to 24 hours. Routines of analysis considering the different possibilities of CK cutoff point expression can be used (e.g., the absolute values; relative to the maximum concentration [%CK máx ]; and relative to the maximum variation delta [%ΔCK máx ]) (11). Thus, any CK-based strategy used for monitoring and readiness to train may be established without relying on invasive measures or while awaiting processing and results.…”

Niveles plasmáticos de creatinfosfoquinasa y deshidrogenasa láctica en jugadores profesionales de fútbol

“…11,12 Por lo tanto, los niveles altos de CPK en suero, en ausencia de daño muscular u otras condiciones patológicas, pueden reflejar el nivel de actividad enzimática del tejido. [13][14][15] El nivel sérico de CPK es un marcador de microtraumatismo muscular después del ejercicio 16,17 y se ha evaluado durante la temporada competitiva en futbolistas profesionales, 10,12 mediante pruebas en el campo de juego. 1,10,12 En algunos estudios, la CPK se ha utilizado como indicador de fatiga muscular, y existe una asociación evidente entre el nivel de CPK y la carrera de muy alta intensidad durante el partido.…”

“…1,10,12 En algunos estudios, la CPK se ha utilizado como indicador de fatiga muscular, y existe una asociación evidente entre el nivel de CPK y la carrera de muy alta intensidad durante el partido. [13][14][15][18][19][20] Los datos del presente estudio demuestran la necesidad de verificar biomarcadores hemáticos de afectación muscular, ya que favorecen el reconocimiento de aparición prematura de daño muscular, permite conducir de mejor forma el entrenamiento y rendimiento físico, particularmente con la CPK y DHL. Los valores de CPK fueron significativa y considerablemente más altos que en la población no deportista de alto rendimiento, que oscila www.medigraphic.org.mx www.medigraphic.org.mx entre 26 y 203 U/L.…”

The Role of Veracity on the Load Monitoring of Professional Soccer Players: A Systematic Review in the Face of the Big Data Era

“…Only one study had a high risk of bias, with a score ≤4 (see Table S1). There were 88 observational studies (i.e., 94%), with 82 prospective cohort studies [41,[43][44][45][46][47][48][49]51,52,[54][55][56][59][60][61][86][87][88]90,[92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][111][112][113][114][116][117][118][119][120][121][122][123]…”