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Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3181fb4587
Original Research

Relation Between Total Body Load and Session Rating of Perceived Exertion in Professional Soccer Players

Gomez-Piriz, Pedro T; Jiménez-Reyes, Pedro; Ruiz-Ruiz, Carlos

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Abstract

Gomez-Piriz, PT, Jiménez-Reyes, P, and Ruiz-Ruiz, C. Relation between total body load and Session-RPE in professional soccer players. J Strength Cond Res 25(8): 2100-2103, 2011—The aims of this study were to assess (a) the validity of total body load (TBL)-obtained from the global position system (GPS) devices-to quantify soccer training load, assessing its relationship with session rating of perceived exertion (session-RPE) and (b) to analyze the differences in terms of TBL and session-RPE among defenders, midfielders, and forwards. Twenty-two professional soccer players (Spanish first division, season 2007-2008; 26.74 ± 4.2 years; height 179.74 ± 4.04 cm; weight 73.7 ± 3.35 kg) participated in the study. During 13 training sessions composed predominantly of small-sided games, TBL and RPE multiplied by the minutes of session duration were determined using GPS and the 21-point scale, respectively. In each session, data from 10 players randomly selected and classified according to player position (defenders, midfielders, and forwards) were collected. Although session-RPE was a significant predictor of TBL (β = 0.23, p < 0.05), this method only accounted for 5% of the variance in TBL. No significant differences in terms of TBL and session-RPE were found regarding player position. The results of this study suggest that TBL is not a valid measure to quantify training load because it is not strongly correlated with session-RPE. Furthermore, TBL and session-RPE in small-sided soccer games do not vary according to player positions.

© 2011 National Strength and Conditioning Association

 

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