Ramos, Guilherme P., Nakamura, Fabio Y., Penna, Eduardo, Wilke, Carolina F., Pereira, Lucas A., Loturco, Irineu, Capelli, Luciano, Mahseredjian, Fabio, Silami-Garcia, Emerson, and Coimbra, Candido C. (2019) Activity profiles in U17, U20, and senior women's Brazilian national soccer teams during international competitions: are there meaningful differences? Journal of Strength and Conditioning Research, 33 (12). pp. 3414-3422.

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Abstract

The aim of this study was to compare locomotor activity profiles of Brazilian topclass female soccer players competing at distinct age brackets (under 17 [U17], under [U20], and senior). External match load of 14 U17, 14 U20, and 17 senior female soccer players competing in 6-7 full official international matches were assessed using global positioning systems. Total distance covered, distance covered in high intensity (15.6-20 km.h(-1)), distance covered in sprints (sprint: >20 km.h(-1)), number of accelerations (Acc) >1 m.s(-2), decelerations (Dec) >(-1) m.s(-2), and Player Load generally increased across the age brackets (U17 < U20 <senior). For all playing positions, senior athletes presented greater total distance, accelerations, and decelerations than U20 players. For high-intensity distance and sprints, only central defender and midfielder senior players presented greater values than U20 players. Senior players demonstrated higher values in all locomotor activities in comparison to U17 players, irrespective of playing positions. Except for central defenders who presented similar total distance, sprint distance, and number of accelerations between U20 and U17, most match external loads evaluated in all playing positions were greater in U20 than in U17 players. These results provide useful information for player development and should be used to establish appropriate match-specific conditioning drills according to age categories.

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