Number of Players and Relative Pitch Area per Player: Comparing Their Influence on Heart Rate and Physical Demands in Under-12 and Under-13 Football Players

Open Access

Peer-reviewed

Research Article

Julen Castellano ,

* E-mail: julen.castellano@ehu.eus

Affiliation University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, España
⨯
Asier Puente,

Affiliation University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, España
⨯
Ibon Echeazarra,

Affiliation University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, España
⨯
Oidui Usabiaga,

Affiliation University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, España
⨯
David Casamichana

Affiliation Gimbernat-Cantabria University School associated with the University of Cantabria (UC), Santander, España
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Sports
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Heart rate
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Games
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Running
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Physical activity
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Accelerometers
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Age groups
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Physiological adaptation
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