Table 3.

Concurrent validity of the non-field and field 2-point methods with respect to the multiple-point method in establishing the relative load-velocity relationship.

Method	Load (%1RM)	Multiple-point (m•s−1)	Two-point (m•s−1)	p	ES	r (95%CI)	Bias (95%LoA)
Non-field 2-point	40	0.98 ± 0.04	0.97 ± 0.04	0.006	0.47	0.96 (0.93, 0.98)	0.01 (−0.02, 0.03)
	45	0.93 ± 0.04	0.92 ± 0.04	0.001	0.60	0.96 (0.92, 0.98)	0.01 (−0.02, 0.03)
	50	0.88 ± 0.04	0.87 ± 0.04	0.001	0.61	0.96 (0.92, 0.98)	0.01 (−0.01, 0.03)
	55	0.83 ± 0.04	0.82 ± 0.03	< 0.001	0.71	0.96 (0.92, 0.98)	0.01 (−0.01, 0.03)
	60	0.78 ± 0.03	0.77 ± 0.03	< 0.001	0.67	0.95 (0.91, 0.98)	0.01 (−0.01, 0.03)
	65	0.73 ± 0.03	0.73 ± 0.03	< 0.001	0.67	0.95 (0.91, 0.97)	0.01 (−0.01, 0.03)
	70	0.68 ± 0.03	0.67 ± 0.03	< 0.001	0.85	0.95 (0.90, 0.97)	0.01 (−0.01, 0.03)
	75	0.63 ± 0.03	0.63 ± 0.03	< 0.001	0.86	0.94 (0.89, 0.97)	0.01 (−0.01, 0.03)
	80	0.59 ± 0.03	0.58 ± 0.03	< 0.001	0.87	0.93 (0.88, 0.96)	0.01 (−0.01, 0.03)
	85	0.54 ± 0.03	0.53 ± 0.03	< 0.001	0.85	0.93 (0.87, 0.96)	0.01 (−0.01, 0.03)
	90	0.49 ± 0.03	0.48 ± 0.03	< 0.001	0.85	0.92 (0.86, 0.96)	0.01 (−0.01, 0.03)
Field 2-point	40	0.98 ± 0.04	0.97 ± 0.04	0.021	0.39	0.76 (0.59, 0.87)	0.01 (−0.04, 0.07)
	45	0.93 ± 0.04	0.92 ± 0.04	0.031	0.36	0.78 (0.61, 0.88)	0.01 (−0.04, 0.06)
	50	0.88 ± 0.04	0.87 ± 0.03	0.049	0.33	0.79 (0.63, 0.88)	0.01 (−0.04, 0.05)
	55	0.83 ± 0.04	0.83 ± 0.03	0.082	0.29	0.80 (0.64, 0.89)	0.01 (−0.04, 0.05)
	60	0.78 ± 0.03	0.78 ± 0.03	0.276	0.18	0.79 (0.64, 0.89)	0.00 (−0.04, 0.05)
	65	0.73 ± 0.03	0.73 ± 0.03	0.766	0.05	0.78 (0.62, 0.88)	0.00 (−0.04, 0.04)
	70	0.68 ± 0.03	0.68 ± 0.03	0.820	0.04	0.75 (0.57, 0.86)	0.00 (−0.04, 0.04)
	75	0.63 ± 0.03	0.64 ± 0.03	0.941	−0.01	0.71 (0.51, 0.84)	0.00 (−0.04, 0.04)
	80	0.59 ± 0.03	0.59 ± 0.03	0.696	−0.06	0.66 (0.43, 0.80)	0.00 (−0.05, 0.04)
	85	0.54 ± 0.03	0.54 ± 0.03	0.474	−0.12	0.59 (0.34, 0.77)	0.00 (−0.05, 0.05)
	90	0.49 ± 0.03	0.49 ± 0.03	0.287	−0.17	0.53 (0.26, 0.73)	−0.01 (−0.06, 0.05)

Data are average values calculated from the first and second testing sessions and presented as means ± standard deviation. 1RM indicates one-repetition maximum; 95%CI, 95% confidence intervals; 95%LoA, 95% limits of agreement (bias ± 1.96 standard deviation); ES, Cohen’s d effect size ([Multiple-point ‒ 2-point] / standard deviation of the differences); p, p values obtained from paired sample t tests; r, Pearson’s correlation coefficient. Bold p-values indicate p < 0.05; bold ES-values, ES > 0.6; bold r-values, r < 0.7