Table 1 Precision of HR (b·min) and BF (br·min) data in comparison to respective criterion measure. Variable Velocity Data Predicted M (SD) Criterion M (SD) Mean bias (95%CI) Mean bias (95%LoA) PCC r CoD r2 HR (b·min-1) All velocities All 123.3 (38.4) 125.9 (34.4) -2.56 (1.40) -2.56 (79.20) .61* 37% Clean 122.6 (34.0) 122.6 (34.6) -.02 (.50) .02 (11.50) .98* 96% 4-6 km·h-1 All 92.6 (11.9) 91.3 (10.9) 1.26 (.40) 1.26 (9.60) .92* 85% Clean - - - - - - 8-10.5 km·h-1 All 143.7 (30.4) 142.3 (21.6) 1.45 (1.6 1.45 (97.40) .58* 34% Clean 141.8 (22.0) 142.5 (21.2) -.64 (.70) -.64 (12.20) .93* 87% 11 km·h-1 All 146.3 (18.3) 170.4 (11.5) -24.08 (6.40) -24.10 (20.40) .57* 33% Clean 173.2 (14.2) 175.3 (9.6) -2.08 (1.90) -2.08 (12.70) .67* 45% BF (br·min-1) All velocities All 29.1 (7.2) 32.7 (11.5) -3.57 (.40) -3.57 (54.70) .67* 45% Clean 29.0 (7.4) 30.2 (8.2) -1.19 (.30) -1.19 (34.40) .82* 67% 4-6 km·h-1 All 23.9 (4.1) 24.9 (6.6) -.96 (.50) -.96 (43.40) .59* 35% Clean 23.4 (3.7) 24.0 (5.0) -.60 (.40) -.60 (36.70) .60* 36% 8-10.5 km·h-1 All 30.5 (5.8) 35.3 (10.7) -4.79 (.87) -4.79 (57.30) .48* 23% Clean 30.6 (5.9) 32.4 (6.2) -1.81 (.42) -1.81 (33.50) .70* 49% 11 km·h-1 All 37.0 (6.1) 43.5 (11.4) -6.53 (1.81) -6.53 (73.70) -.21 44% Clean 38.6 (4.9) 40.1 (5.9) -1.43 (.45) -1.43 (17.10) .83* 69% Tabular report of validity statistics: Descriptive statistics, Standard Deviation (SD), Mean Bias, 95% Confidence Intervals (CI), Log transformed mean bias, 95% Limits of Agreement (LoA), Pearson’s Product Correlation Coefficient (PCC) and Coefficient of Determination (CoD) across whole data set. * p < 0.01