![]() Pitches’ sizes were: 102 (± 4) × 66.5 (± 2) meters in professional matches and 100 × 66 meters in U-17 one. Tests were systematically done at the same local time, in order to avoid differences due to circadian variations ( 10). Testing order was the same in every collecting session. The tested team was ranked among the top 5, played against a top 10 team (first match) and won, and played against a bottom 3 team (second match) and lost, during the 28th and 29th day (over 38) of the French championship. For professional players who played at least 85 minutes in every game, blood samples, perceived fatigue, muscle soreness, and heart rate were collected the day before (PRE), the day after (POST24) and two days after (POST48) the two analysed games (n = 16 players). U-17 players who played at least 85 minutes in the game were tested (20 m sprint ability, heart rate at rest) and questioned (perceived fatigue and muscle soreness) two days before (PRE), the day after (POST24) and two days after (POST48) the match. ![]() Tests and measures are quite complex to make before and after an official soccer match, as they are rarely compatible with match preparation and recovery procedures.Īll participants were familiar with the applied protocol tests (physical tests, heart rate measurement and the use of perceived fatigue questionnaire) since they were fully included in the individual monitoring made by staff of the club. To the knowledge of the authors, no previous research has analysed fatigue marker development among professional soccer players after a competitive match. ![]() ( 3) have found that simulated match inflammatory responses increased until 72 hours among Greek elite players. Reports from this study are limited by the simulated match protocol, which would be quite far from physical and psychological strains of competitive match. ( 6) have analysed kinetic post match fatigue of professional soccer players and have found that 48 hours were enough to recover from peripheral fatigue factors such as sprint ability, maximal voluntary activation and contraction and EMG activity. Furthermore, the distribution of weekly load differs from one professional soccer team to another, making it even more difficult the simultaneously analyse those many teams. However among male top-class professionals, recovery-training sessions could be planned the day after the match and some references on their recovery kinetic at 24 hours, 48 hours, and 72 hours post-match have been published. Players will need at least 72 hours to totally recover from muscles damages and oxidative stress imposed by a soccer match ( 3, 8, 9). Thus the relevance of studying correlations between difficulties perceived by players and blood markers has been identified. As it had been shown in sports like rugby, several correlations might exist between these markers, in particular blood markers and difficulty of sessions ( 7). ![]() Decrease of muscular glycogen ( 2), increase of creatine kinase (CK), leukocytes, lactate dehydrogenase, C-reactive protein, protein carbonyls, uric acid and delayed onset muscle soreness ( 3), heart rate (HR) variations ( 4), decrease of lower limb strength ( 5, 6) are effects induced by match intensity, match duration, game conditions and mostly the repetition of high level actions during the match. Many markers have been analysed to study physiological and physical aspects of this fatigue. Decrease of performance appears after high intensity actions, at the beginning of the second half and at the end of soccer match ( 1). ![]() Induced match fatigue has especially been the subject of many studies because it is the basis of all soccer player activities during the week (competition, training sessions, recovery, medical treatments, etc.). As Soccer is a universal socio-cultural keen interest, studying high-level practice foundations has been, for several decades, an obvious activity to deepen its knowledge. ![]()
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