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Internal training load and fitness profile between adult team versus junior team soccer players

Alireza Rabbani ; Department of Exercise Physiology, Faculty of Sport Sciences University of Isfahan, Iran
Del P. Wong ; School of Nursing and Health Studies, The Open University of Hong Kong, Hong Kong
Filipe Manuel Clemente orcid id ; Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
Mehdi Kargarfard ; nstituto de Telecomunicações, Delegação da Covilhã, Covilhã, Portugal

Puni tekst: engleski pdf 890 Kb

str. 71-77

preuzimanja: 174



The aim of the present study was to compare the fitness profiles and internal training loads between senior team and academy team soccer players during an in-season phase. Twenty two professional soccer players from the senior team (n=12; 28.3 2.0 years) and under 19 (U19) team (n=10; 18.00.4 years) of the same club participated in the present study. High intensity running performance, acceleration, maximal sprint, and change of direction (COD) ability were all tested during the mid-season break of a competitive season. Session rating of perceived exertion (sRPE) reflecting the internal training load during the entire first half of the season was being documented daily. Senior players showed small to moderate superiority in COD (1.8%, 90% confidence intervals [CI, -3.2; 7.1], ES: 0.24 [-0.44; 0.92]), maximal sprint (2.3%, [0.0; 4.7], ES: 0.81 [0.00; 1.63]) and acceleration (3%, [0.2; 5.8], ES: 0.96 [0.06; 1.85]). The U19 showed small better highintensity intermittent running fitness (2.5%, [-1.2; 6.3], ES: 0.39 [-0.20; 0.97]). When analyzing internal training loads (from M-3 to M+3), the U19 showed small to very large higher sRPE values for all days (range; 8.2%; 229.3%, [-8.1; 328.3], ES range; 0.25; 2.70, [-0.26; 3.3]), except for match days (M), on which unclear trivial difference was observed (-1.5%, [-9.6; 7.5], ES -0.09 [-0.65; 0.46]). Our results showed that senior players and youth players had different fitness profiles and internal training loads during the first half of a competitive season; this should be taken into consideration when designing specific and individualized recovery and training sessions.

Ključne riječi

football, high-intensity intermittent performance, perceived exertion, change of direction, maximal sprint, acceleration

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