Introduction Session-RPE is a valid wide spreading measure of internal training load (TL) used in soccer [1, 2]. Nevertheless some aspects can influence the measure of perceived exertion: intensity distribution and timing in the collection of RPE. The first aim of this study was to examine the effect of different position of high-intensity activities within a training session on the overall session RPE (RPE-end). The second aim was to examine the effect of different delay on session RPE. Methods Nineteen junior players (age 15±0.7 yrs, height 172±4.3 cm, weight 61.9±5.1 kg) of a Switzerland soccer team were involved in the study. Heart rate (HR), RPE (Borg CR100©) were collected in 4 standardized training sessions. Total quality of recovery scale (TQR) and Visual Analogical Scale (VAS) for pain of lover limbs were used to avoid presence of fatigued players. Every session was made up by 3 blocks of 20 min different intensity: high (80-100% HR max), light (50-80% HR max) and moderate intensity (60-90% HR max), randomized in the order. RPE was collected after every block (RPE5), immediately after the session (RPE-end), after 30 min (RPE30) and 4 hours (RPE4h). Results RPE5 of each block were different depending on the distribution sequence (significant time x condition interaction p<0.0001, partial η2 0.64). RPE-end was not different in the four conditions (p=0.67, partial η2 0.021). TQR (p=0.26, partial η2 0.04), VAS (p=0.47, partial η2 0.02) and HR max (p=0.20, partial η2 0.14) showed no significant differences in the sessions. Every block showed not different HR (percentage of max) in all conditions (all p>0.05). Delay in the RPE collection did not show effect on RPE (p>0.05). Discussion TQR and VAS showed similar pre-training conditions and the presence of tired players was excluded. Different intensity distribution was expected by our design and showed no effect on TL. Similarly TL was not influenced by time delay. Therefore training sessions can be designed without being afraid of the influence of distribution intensity on TL. Coaches can confide in the ability of their players to give the same perception even at the end of the session or later without affecting TL
Factors influencing session rpe in soccer: exercise intensity distribution and time delay
FANCHINI, Maurizio;SCHENA, Federico;
2012-01-01
Abstract
Introduction Session-RPE is a valid wide spreading measure of internal training load (TL) used in soccer [1, 2]. Nevertheless some aspects can influence the measure of perceived exertion: intensity distribution and timing in the collection of RPE. The first aim of this study was to examine the effect of different position of high-intensity activities within a training session on the overall session RPE (RPE-end). The second aim was to examine the effect of different delay on session RPE. Methods Nineteen junior players (age 15±0.7 yrs, height 172±4.3 cm, weight 61.9±5.1 kg) of a Switzerland soccer team were involved in the study. Heart rate (HR), RPE (Borg CR100©) were collected in 4 standardized training sessions. Total quality of recovery scale (TQR) and Visual Analogical Scale (VAS) for pain of lover limbs were used to avoid presence of fatigued players. Every session was made up by 3 blocks of 20 min different intensity: high (80-100% HR max), light (50-80% HR max) and moderate intensity (60-90% HR max), randomized in the order. RPE was collected after every block (RPE5), immediately after the session (RPE-end), after 30 min (RPE30) and 4 hours (RPE4h). Results RPE5 of each block were different depending on the distribution sequence (significant time x condition interaction p<0.0001, partial η2 0.64). RPE-end was not different in the four conditions (p=0.67, partial η2 0.021). TQR (p=0.26, partial η2 0.04), VAS (p=0.47, partial η2 0.02) and HR max (p=0.20, partial η2 0.14) showed no significant differences in the sessions. Every block showed not different HR (percentage of max) in all conditions (all p>0.05). Delay in the RPE collection did not show effect on RPE (p>0.05). Discussion TQR and VAS showed similar pre-training conditions and the presence of tired players was excluded. Different intensity distribution was expected by our design and showed no effect on TL. Similarly TL was not influenced by time delay. Therefore training sessions can be designed without being afraid of the influence of distribution intensity on TL. Coaches can confide in the ability of their players to give the same perception even at the end of the session or later without affecting TL
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