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Table 3 Summary of estimated model parameters for models of perceived exertion: median (1st quartile, 3rd quartile)

From: Modeling trajectories of perceived leg exertion during maximal cycle ergometer exercise in children and adolescents

Parameter P D PD QD
Intercept (a) ‐0.04 (‐0.29,0.32) 0.37 (0.00,0.54) 0.36 (0.00, 0.60) 0.39 (0.00, 0.62)
Slope 1(b 1)   7.32 (5.92,10.52)   7.01 (3.18, 11.90)
Slope 2 (b 2) 5.13 (3.45,7.25)   7.00 (5.45,10.67) 0.00 (‐4.34,5.80)
Exponent (d) 2.03 (1.40,2.92)   1.03 (0.83,1.78)  
Delay (c)   0.38 (0.27,0.50) 0.30 (0.17, 0.41) 0.40 (0.26,0.49)
  1. Abbreviations: P power model, D delay model, PD power model with delay, QD quadratic model with delay.