Abstract
Purpose: To understand the validity of differential ratings of perceived exertion (dRPE) as measure of girl’s training and match internal loads.
Methods: Using the centiMax scale (CR100®), session dRPE for breathlessness (sRPE-B) and leg muscle exertion (sRPE-L) were collected across a season of training (soccer, resistance, fitness) and matches from 33 players (15 ± 1 years). Differences and associations between dRPE were examined using mixed and general linear models. Our minimal practical important difference was 8 arbitrary units [AU].
Results: Mean (AU ± standard deviation ~16) sRPE-B and sRPE-L were 66 and 61 for matches, 51 and 49 for soccer, 86 and 67 for fitness, and, 45 and 58 for resistance. Session RPE-B was rated most likely harder than sRPE-L for fitness (19 AU; 90% confidence limits [CL]: ±7) and most likely easier for resistance (-13; ±2). Match (5; ±4) and soccer (-3; ±2) differences were likely to most likely trivial. The within-player relationships between sRPE-B and sRPE-L were very likely moderate for matches (r = 0.44; 90% CL: ±0.12) and resistance training (0.38; ±0.06), likely large for fitness training (0.51; ±0.22) and most likely large for soccer training (0.56; ±0.03). Shared variance ranged from 14-35%.
Conclusions: Practically meaningful differences between dRPE following physical training sessions coupled with low shared variance in all training types and matches suggest that sRPE-B and sRPE-L represents unique sensory inputs in girls soccer players. Our data provide evidence for the face and construct validity of dRPE as measures of internal load in this population.
Methods: Using the centiMax scale (CR100®), session dRPE for breathlessness (sRPE-B) and leg muscle exertion (sRPE-L) were collected across a season of training (soccer, resistance, fitness) and matches from 33 players (15 ± 1 years). Differences and associations between dRPE were examined using mixed and general linear models. Our minimal practical important difference was 8 arbitrary units [AU].
Results: Mean (AU ± standard deviation ~16) sRPE-B and sRPE-L were 66 and 61 for matches, 51 and 49 for soccer, 86 and 67 for fitness, and, 45 and 58 for resistance. Session RPE-B was rated most likely harder than sRPE-L for fitness (19 AU; 90% confidence limits [CL]: ±7) and most likely easier for resistance (-13; ±2). Match (5; ±4) and soccer (-3; ±2) differences were likely to most likely trivial. The within-player relationships between sRPE-B and sRPE-L were very likely moderate for matches (r = 0.44; 90% CL: ±0.12) and resistance training (0.38; ±0.06), likely large for fitness training (0.51; ±0.22) and most likely large for soccer training (0.56; ±0.03). Shared variance ranged from 14-35%.
Conclusions: Practically meaningful differences between dRPE following physical training sessions coupled with low shared variance in all training types and matches suggest that sRPE-B and sRPE-L represents unique sensory inputs in girls soccer players. Our data provide evidence for the face and construct validity of dRPE as measures of internal load in this population.
Original language | English |
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Journal | International Journal of Sports Physiology and Performance |
Publication status | Accepted/In press - 6 Jan 2020 |